{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9853537","patent":{"patent_number":"US-9853537","title":"Multilevel converter for power factor correction and associated operating method","assignee":null,"inventors":[],"filing_date":"2013-07-08T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M"],"num_claims":6,"abstract":"A method operates a multilevel converter for power factor correction of a polyphase mains voltage. Each phase of the polyphase main has an associated phase module with a plurality of sub modules which are connected in series and each have an electrical energy store. Each sub module can be connected to the phase of the mains voltage or disconnected there from by an electronic switch. A circuit breaker is provided for disconnecting the converter from the mains voltage. The converter has a regulation system by which the voltages of the phase modules are balanced when the circuit breaker is open."},"analysis":{"summary":"The patent **Multilevel Converter for Power Factor Correction and Associated Operating Method** (US-9853537) introduces an innovative method and system for enhancing power factor correction in polyphase mains voltage applications. At its core, the invention describes a multilevel converter architecture where each phase of the polyphase mains is equipped with a dedicated phase module. These phase modules are composed of a plurality of sub-modules, each containing an electrical energy store and capable of being individually connected to or disconnected from the mains phase through electronic switches. This modular and controllable design is central to its ability to dynamically and precisely optimize power factor.\n\nThe primary problem this patent addresses is the inefficiency and instability caused by poor power factor in modern electrical grids, particularly those with dynamic and non-linear loads. Traditional power factor correction methods often lack the granularity and adaptability needed for optimal performance in complex polyphase systems, leading to increased energy losses, harmonic distortion, and reduced system capacity.\n\nThe key technical approach involves the intelligent control of these sub-modules. By selectively engaging or disengaging sub-modules, the converter can synthesize precise current waveforms to compensate for reactive power, thereby improving the power factor. A crucial aspect is the integrated circuit breaker for safety, alongside a sophisticated regulation system. This regulation system ensures that the voltages of the phase modules are actively balanced even when the circuit breaker is open, a feature vital for system integrity, safe startup, and prolonged operational life.\n\nFrom a business perspective, this technology offers significant value. It promises substantial energy savings by minimizing reactive power consumption and reducing utility penalties. Improved power quality leads to extended lifespan for connected equipment and enhanced operational reliability, particularly in industrial settings, data centers, and renewable energy integration. The market opportunity is vast, spanning any industry reliant on stable, efficient polyphase power, offering a competitive edge through superior energy management and reduced infrastructure strain. This innovation positions itself as a critical component for modernizing electrical grids and driving sustainable energy practices.","layman_explanation":"<h3>1. What Problem Does This Solve?</h3>\nImagine your business operates a large factory or a sprawling office complex. You're constantly using a lot of electricity, but not all of that electricity is used efficiently. Sometimes, the way your machines or equipment draw power creates a 'ripple' or 'wobble' in the electrical flow, known as a poor 'power factor.' Think of it like a leaky hose: you're paying for all the water that comes out of the faucet, but some of it just splashes out before it reaches your plants. This wasted 'splashed' electricity, or reactive power, doesn't do any useful work but still costs you money on your utility bill, often through penalties. Beyond cost, this inefficiency can also strain your electrical infrastructure, leading to voltage fluctuations, premature wear on equipment, and even disruptions in operations. Existing solutions, like simply adding large capacitors, are often static and can't adapt to the constantly changing demands of modern equipment, leaving much of the problem unaddressed.\n\n<h3>2. How Does It Work?</h3>\nThis is where the **Multilevel Converter for Power Factor Correction and Associated Operating Method** comes in. Instead of a single, blunt instrument, imagine a sophisticated, dynamic system that acts like a highly intelligent electrical 'traffic controller' for each phase of your building's power supply. For each phase, there's a module, and within that module are many smaller, independent 'sub-modules.' Each sub-module is like a mini-battery or energy storage unit that can be precisely switched on or off, or connected/disconnected, to the main power line as needed. The system constantly monitors the electricity flow and instantly decides which sub-modules to activate to 'smooth out' any wobbles or ripples. It's like having a team of tiny, super-fast engineers constantly adjusting the flow, ensuring only useful power is drawn. What's truly clever is that even when the main power switch is off (say, for maintenance), the system intelligently balances the energy in all these sub-modules, ensuring a perfectly smooth and safe restart when power is restored. This proactive balancing prevents any sudden surges or imbalances that could cause issues.\n\n<h3>3. Why Does This Matter?</h3>\nThis innovation matters because it directly impacts your bottom line and operational reliability. By precisely correcting the power factor, your business can significantly reduce wasted energy and avoid costly utility penalties, leading to substantial savings on electricity bills. Beyond cost, the improved power quality means your sensitive equipment, from data servers to manufacturing robots, operates more reliably and has a longer lifespan, reducing maintenance costs and avoiding expensive downtime. This technology also enhances the overall stability of your electrical system, making it more resilient to fluctuations and better able to handle the complex, dynamic loads of modern operations. For businesses looking to expand, it can even free up existing electrical capacity, delaying or eliminating the need for expensive infrastructure upgrades. In a world increasingly focused on sustainability, this technology also contributes to a smaller carbon footprint by maximizing energy efficiency.\n\n<h3>4. What's Next?</h3>\nThe **Multilevel Converter for Power Factor Correction and Associated Operating Method** positions itself as a foundational technology for the next generation of smart grids and energy management systems. We can expect to see its adoption in large industrial complexes, data centers, and even in the integration of renewable energy sources, where stable and efficient power delivery is crucial. As energy costs rise and sustainability mandates become stricter, this approach will become indispensable. Investors and businesses should view this as a strategic asset, enabling both immediate operational savings and long-term resilience in an evolving energy landscape. Its modularity also suggests future applications in microgrids and distributed energy resources, offering a scalable solution for diverse power quality challenges.","technical_analysis":"The patent **Multilevel Converter for Power Factor Correction and Associated Operating Method** (US-9853537) details a sophisticated power electronics solution for optimizing power factor in polyphase electrical systems. The core innovation lies in its modular multilevel converter (MMC) architecture combined with an intelligent control strategy and a unique voltage balancing mechanism.\n\n**Technical Architecture:** The system is designed for polyphase mains voltage, meaning it handles multiple alternating current phases (typically three). For each phase, there's an 'associated phase module.' This module is not a single unit but a series connection of 'sub-modules.' Each sub-module is a fundamental building block, typically comprising an 'electrical energy store' (a DC-link capacitor) and an arrangement of semiconductor switches (e.g., IGBTs or MOSFETs) that allow the sub-module to either inject a voltage or bypass itself from the series connection. This series connection of many sub-modules allows the phase module to synthesize a stepped, high-quality voltage waveform, effectively acting as a controllable voltage source or sink.\n\n**Implementation Details:** The 'electronic switch' associated with each sub-module is critical. These switches enable the sub-module to be connected to or disconnected from its respective phase of the mains voltage. This dynamic switching allows for precise control over the overall voltage and current waveform of the phase module. By rapidly and intelligently switching these sub-modules in and out, the converter can draw or supply reactive power as needed, thereby correcting the power factor. The number of sub-modules per phase directly influences the granularity of control and the quality of the synthesized waveform, with more sub-modules leading to finer control and lower harmonic distortion.\n\n**Algorithm Specifics:** While the patent abstract doesn't detail specific algorithms, the operation implies a sophisticated control scheme. This would typically involve:\n1.  **Voltage Sensing:** Monitoring the mains voltage and the DC-link voltage of each sub-module.\n2.  **Current Sensing:** Measuring the current in each phase.\n3.  **Reactive Power Calculation:** Determining the instantaneous reactive power demand.\n4.  **Modulation Strategy:** A pulse-width modulation (PWM) or nearest-level control (NLC) algorithm to determine which sub-modules to connect/disconnect at any given time to synthesize the required voltage waveform for reactive power compensation.\n5.  **Voltage Balancing Algorithm:** A crucial algorithm within the 'regulation system' to ensure that the DC-link voltages of all sub-modules within a phase module (and across different phase modules) remain balanced. This is especially challenging and innovative when the 'circuit breaker is open,' meaning the converter is disconnected from the main grid. This 'open-circuit' balancing likely involves internal charging/discharging paths or a controlled pre-charging sequence to ensure all capacitors are at their nominal voltage before connection, preventing inrush currents or unbalanced startup conditions.\n\n**Integration Patterns:** This multilevel converter would typically integrate at the point of common coupling (PCC) in a polyphase system, either in parallel (for shunt compensation) or in series (for series compensation, though the description leans towards shunt). Its modularity makes it suitable for scaling to high-power applications. The independent control of each phase module also allows for unbalanced load compensation.\n\n**Performance Characteristics:** The inherent advantages of an MMC topology are leveraged here: high voltage capability, low harmonic distortion (due to multiple voltage levels), high efficiency (reduced switching losses compared to two-level converters at the same output quality), and redundancy (fault tolerance if a sub-module fails). The dynamic response to reactive power demands would be superior to passive solutions and many active filter designs due to the granular control provided by the sub-modules.\n\n**Code-level Implications:** Implementing the regulation system and control algorithms would require real-time embedded software. This would involve high-speed analog-to-digital converters (ADCs) for sensing, powerful digital signal processors (DSPs) or FPGAs for executing complex modulation and balancing algorithms, and robust communication protocols for coordinating sub-modules. The voltage balancing logic for open-circuit conditions would be a distinct and critical software module, managing internal energy transfer or controlled pre-charging routines. This invention provides a robust framework for developing advanced, software-defined power quality solutions.","business_analysis":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** (US-9853537) represents a significant leap in power electronics with profound commercial applications and market implications. Its intelligent design for power factor correction in polyphase mains voltage systems addresses critical inefficiencies and vulnerabilities in modern electrical infrastructure, opening substantial market opportunities.\n\n**Market Opportunity Size:** The global market for power factor correction equipment is substantial and growing, driven by increasing electricity costs, stringent energy efficiency regulations, and the proliferation of non-linear loads from industrial automation, data centers, and renewable energy sources. This market is projected to reach billions of dollars annually. This innovation targets a high-value segment within this market: large-scale industrial facilities, commercial buildings, utility-scale grid stabilization, and renewable energy integration projects where high power quality and efficiency are paramount. The ability to manage power factor dynamically and precisely in polyphase systems positions this technology for widespread adoption across these sectors.\n\n**Competitive Advantages:** The Multilevel Converter for Power Factor Correction and Associated Operating Method offers several distinct competitive advantages:\n1.  **Superior Performance:** Unlike traditional capacitor banks or even many active harmonic filters, this multilevel converter provides highly granular, dynamic, and phase-specific power factor correction, leading to lower harmonic distortion and higher overall efficiency.\n2.  **Enhanced Reliability & Longevity:** The innovative regulation system that balances phase module voltages even when the circuit breaker is open significantly improves system reliability, extends component lifespan, and reduces maintenance costs.\n3.  **Scalability:** Its modular design allows for easy scalability to very high power levels, making it suitable for a broad range of applications from medium-sized industrial plants to large utility substations.\n4.  **Adaptability:** The system's ability to adapt to rapidly changing load conditions is superior, ensuring optimal power factor under diverse operational scenarios.\n\n**Revenue Potential and Business Models:** Revenue streams can be generated through direct sales of the converter units, licensing the patented technology to power electronics manufacturers, or offering it as a core component within broader energy management solutions. Potential business models include:\n*   **Equipment Sales:** Selling complete Multilevel Converter for Power Factor Correction systems to industrial clients, utilities, and EPC (Engineering, Procurement, and Construction) firms.\n*   **Component Supply:** Supplying the specialized sub-modules or control systems to OEMs.\n*   **Energy-as-a-Service (EaaS):** Offering power quality improvement as a service, where customers pay for guaranteed energy savings and improved power reliability, with the upfront cost of the converter amortized over time.\n*   **Licensing:** Licensing the core intellectual property to established power electronics companies for integration into their product lines.\n\n**Strategic Positioning:** This innovation positions companies leveraging it at the forefront of power quality solutions. It aligns perfectly with global trends towards smart grids, energy efficiency, and sustainable infrastructure. By mitigating energy losses and improving grid stability, this technology supports corporate sustainability goals and helps meet regulatory compliance for power quality. It also enables the more efficient integration of intermittent renewable energy sources, which often introduce power quality challenges.\n\n**ROI Projections:** For end-users, the ROI is driven by significant reductions in electricity bills (elimination of reactive power penalties), extended equipment lifespan, reduced maintenance, and avoidance of costly infrastructure upgrades. For manufacturers or licensees, the ROI comes from market differentiation, access to high-growth segments, and the ability to offer a superior, patented solution. Initial investment in this advanced technology is quickly offset by operational savings and enhanced asset performance, making it a compelling proposition for businesses seeking both immediate financial returns and long-term operational resilience. The Multilevel Converter for Power Factor Correction and Associated Operating Method is not just a technical improvement; it's a strategic asset for the energy future.","faqs":[{"answer":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** (US-9853537) is a patented technology that describes an advanced system and method for optimizing power factor in polyphase electrical systems. It introduces a sophisticated multilevel converter architecture designed to enhance energy efficiency and grid stability.\n\nEssentially, this invention addresses the problem of 'reactive power'—electricity that doesn't do useful work but still flows through the grid, leading to energy losses and inefficiencies. The converter is built with modular components that can precisely control and compensate for this reactive power, ensuring that the electrical system operates with maximum efficiency.\n\nThis technology is crucial for environments like industrial plants, data centers, and large commercial buildings where complex machinery and varying loads often cause poor power factor. By dynamically adjusting the power flow, it helps to reduce electricity bills, protect equipment, and make the overall electrical grid more reliable. It represents a significant advancement in power electronics for modern energy management.\n\n**Keywords:** multilevel converter, power factor correction, polyphase mains, energy efficiency, grid stability.","question":"What is Multilevel Converter for Power Factor Correction and Associated Operating Method?"},{"answer":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** operates through a highly modular and intelligent design. For each phase of a polyphase mains voltage, the system employs a dedicated 'phase module.' Each phase module is composed of multiple 'sub-modules' connected in series.\n\nEach sub-module contains an 'electrical energy store' (typically a capacitor) and is equipped with 'electronic switches.' These switches allow the sub-module to be precisely connected to or disconnected from its respective mains phase. By rapidly and intelligently controlling these connections, the converter can synthesize a voltage waveform that effectively cancels out reactive power, thereby improving the power factor.\n\nFurthermore, the patent highlights a sophisticated 'regulation system.' This system not only manages the dynamic power factor correction but also ensures that the voltages of all phase modules are balanced. Crucially, this balancing occurs even when the main circuit breaker is open, meaning the converter is disconnected from the grid. This ensures a safe, smooth startup and enhances the overall reliability and longevity of the system.\n\n**Keywords:** multilevel converter operation, sub-modules, electronic switches, voltage balancing, regulation system, power factor correction mechanism.","question":"How does Multilevel Converter for Power Factor Correction and Associated Operating Method work?"},{"answer":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** primarily solves the pervasive problem of poor power factor in polyphase electrical systems. Poor power factor occurs when the current and voltage waveforms in an AC circuit are out of phase, leading to several detrimental consequences.\n\nThese consequences include significant energy losses, which translate to higher electricity bills and potential penalties from utility providers. It also reduces the effective capacity of electrical infrastructure, meaning existing wiring and transformers can carry less useful power. Furthermore, poor power factor can cause voltage fluctuations, harmonic distortions, and increased stress on electrical equipment, leading to premature wear, malfunctions, and costly downtime.\n\nTraditional power factor correction methods often provide static or limited dynamic compensation, failing to adequately address the rapidly changing and non-linear loads common in modern industrial and commercial environments. This invention provides a highly adaptive and precise solution to these challenges, ensuring efficient power utilization and robust grid stability.\n\n**Keywords:** power factor problem, energy waste, grid instability, harmonic distortion, equipment damage, reactive power.","question":"What problem does Multilevel Converter for Power Factor Correction and Associated Operating Method solve?"},{"answer":"The patent for **Multilevel Converter for Power Factor Correction and Associated Operating Method** (US-9853537) does not list the inventors in the provided data. However, patents are typically filed by individuals or a team of engineers and researchers who conceived the novel aspects of the invention.\n\nThe assignee, which is the entity to whom the patent rights are assigned (often a company or university), is also not provided in the given data. In many cases, inventors work for a company, and the patent rights are assigned to that company upon filing.\n\nTo find the specific inventors and assignee, one would typically refer to the full patent document available from patent offices like the USPTO (United States Patent and Trademark Office) or through patent databases. This information is publicly available in the complete patent filing.\n\n**Keywords:** patent inventor, assignee, US-9853537, patent rights, patent filing details.","question":"Who invented Multilevel Converter for Power Factor Correction and Associated Operating Method?"},{"answer":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** offers several significant benefits that address critical needs in modern electrical systems.\n\nFirstly, it leads to **enhanced energy efficiency** by achieving near-unity power factor. This minimizes reactive power flow, reducing energy losses in transmission and distribution, and translating into lower electricity bills and avoidance of utility penalties for businesses. Secondly, it provides **superior grid stability and power quality**. By dynamically compensating for reactive power and mitigating harmonic distortions, it ensures a cleaner and more stable power supply, which is vital for sensitive electronic equipment and overall grid reliability.\n\nThirdly, the innovation contributes to **extended equipment lifespan and reduced maintenance costs**. Cleaner power and stable voltage protect machinery, motors, and IT infrastructure from electrical stress, leading to fewer breakdowns and longer operational life. Finally, its **modular and scalable design** makes it highly adaptable for various applications, from industrial plants to utility-scale grid stabilization, and the unique voltage balancing feature even when disconnected significantly boosts system reliability and safety.\n\n**Keywords:** energy efficiency benefits, grid stability, power quality, equipment protection, reduced costs, modular design.","question":"What are the key benefits of Multilevel Converter for Power Factor Correction and Associated Operating Method?"},{"answer":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** distinguishes itself from prior art through several key innovations, primarily its advanced modular multilevel converter (MMC) architecture and intelligent control system.\n\nTraditional power factor correction methods, such as fixed capacitor banks, offer static compensation and cannot adapt to changing load conditions. Switched capacitor banks provide some steps of compensation but lack the precision and speed for dynamic environments. Even many active power filters (APFs) based on two-level or three-level inverter topologies may have limitations in voltage handling, harmonic performance at higher power, and often lack sophisticated internal balancing mechanisms.\n\nThis invention's use of numerous individually controllable sub-modules per phase allows for a much finer, more dynamic, and rapid compensation of reactive power, leading to superior power factor correction and harmonic reduction. Crucially, the patent describes a unique 'regulation system' that actively balances the voltages of the phase modules even when the circuit breaker is open. This 'open-circuit' balancing ensures system integrity during standby, safe startup, and prolonged operational life, a feature not commonly found or as robust in prior art solutions. This combination of modularity, precision, and intelligent balancing provides a significant competitive advantage.\n\n**Keywords:** prior art comparison, multilevel converter distinctiveness, dynamic PFC, open-circuit voltage balancing, advanced power electronics, competitive advantage.","question":"How is Multilevel Converter for Power Factor Correction and Associated Operating Method different from prior art?"},{"answer":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** is poised to have a significant impact across a wide range of industries that rely heavily on polyphase electrical systems and demand high power quality and efficiency.\n\n**Industrial Manufacturing** will benefit immensely, particularly facilities with heavy inductive loads like large motors, arc furnaces, and robotic assembly lines, where poor power factor and harmonic distortion are common. This technology will reduce energy costs, improve equipment reliability, and prevent production disruptions. **Data Centers** are another critical sector, as they require pristine, uninterrupted power to prevent server crashes and ensure continuous operation. The improved power quality will extend the lifespan of expensive IT infrastructure and enhance uptime.\n\n**Renewable Energy Integration** will also see substantial impact. As more intermittent sources like solar and wind power are connected to the grid, maintaining stable power quality becomes challenging. This converter can help stabilize grid connections and ensure efficient power transfer. Furthermore, **Utilities and Grid Operators** can leverage this innovation for grid modernization, reducing transmission losses, improving overall grid stability, and enhancing resilience against disturbances across their distribution networks.\n\n**Keywords:** industrial impact, data center power, renewable energy integration, utility grid modernization, manufacturing efficiency, commercial power systems.","question":"What industries will Multilevel Converter for Power Factor Correction and Associated Operating Method impact?"},{"answer":"The patent for **Multilevel Converter for Power Factor Correction and Associated Operating Method** (US-9853537) was filed on **July 8, 2013**. This date marks when the initial application for the patent was submitted to the patent office.\n\nThe patent was subsequently published, or granted, on **December 26, 2017**. The publication date signifies when the patent was officially issued and became public knowledge, detailing the full scope of the invention and its claims. The period between the filing date and the publication/grant date is typically used by patent offices for examination, where the invention's novelty, non-obviousness, and utility are assessed against existing prior art.\n\nThese dates are crucial for understanding the timeline of the invention's development and its entry into the public domain, providing context for its innovation within the power electronics landscape.\n\n**Keywords:** patent filing date, publication date, patent grant, US-9853537 timeline, patent examination, invention history.","question":"When was Multilevel Converter for Power Factor Correction and Associated Operating Method filed/granted?"},{"answer":"The **Multilevel Converter for Power Factor Correction and Associated Operating Method** has a wide array of commercial applications, driven by its ability to significantly improve energy efficiency, power quality, and grid stability in polyphase systems.\n\nPrimary applications include **heavy industrial facilities** such as steel mills, automotive plants, and chemical processing units, which utilize large motors and non-linear loads that typically suffer from poor power factor. Implementing this technology can lead to substantial reductions in electricity costs and improved equipment reliability. **Data centers and large commercial buildings** are also prime candidates, as they demand high-quality, stable power to ensure uninterrupted operations and protect sensitive electronic equipment.\n\nFurthermore, it is highly applicable in the context of **renewable energy integration**, where it can stabilize the grid connection of solar farms, wind turbines, and other intermittent sources, ensuring efficient and reliable power delivery. **Utility-scale grid stabilization** devices, such as STATCOMs (Static Synchronous Compensators), can leverage this technology to enhance overall grid resilience, reduce transmission losses, and manage voltage fluctuations across vast networks. Its modularity allows for scalable solutions tailored to diverse power requirements.\n\n**Keywords:** commercial applications, industrial power factor, data center efficiency, renewable energy stabilization, grid utility, energy management solutions.","question":"What are the commercial applications of Multilevel Converter for Power Factor Correction and Associated Operating Method?"},{"answer":"Looking ahead, the **Multilevel Converter for Power Factor Correction and Associated Operating Method** is expected to evolve and integrate with emerging technologies, further solidifying its role in advanced power systems.\n\nOne key area of future development will be the integration of **artificial intelligence (AI) and machine learning (ML)** into its regulation system. This could enable more predictive and adaptive power factor correction, where the system learns load patterns and anticipates grid disturbances, optimizing compensation even more proactively. Another direction is enhanced **fault tolerance and self-healing capabilities**. Advanced algorithms could allow the converter to isolate and bypass faulty sub-modules without interrupting operation, increasing system resilience.\n\nFurther development might also see this technology integrated with **advanced energy storage systems** (e.g., batteries), transforming it into a multi-functional device capable of not only PFC but also peak shaving, frequency regulation, and providing black start capabilities for microgrids. Its modular design also positions it for applications in **distributed energy resources and microgrids**, where localized power generation and consumption require sophisticated balancing and control. Ultimately, the innovation's principles will contribute to the development of truly autonomous, intelligent, and resilient electrical grids of the future.\n\n**Keywords:** future developments, AI in power electronics, fault tolerance, energy storage integration, smart grid evolution, microgrid applications.","question":"What are the future developments expected for Multilevel Converter for Power Factor Correction and Associated Operating Method?"}],"topics":["multilevel converter","power factor correction","polyphase mains voltage","energy efficiency","grid stability","technical","background","imperative"],"tech_cluster":null},"seo":{"title":"Multilevel Converter for Power Factor Correction - US-9853537","description":"Discover the Multilevel Converter for Power Factor Correction and Associated Operating Method patent: enhancing grid stability & energy efficiency in polyphase systems. Full analysis.","keywords":["multilevel converter","power factor correction","polyphase mains voltage","energy efficiency","grid stability","power electronics","harmonic reduction","voltage balancing","US-9853537","patent"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9853537","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9853537","citation_suggestion":"Patentable. \"Multilevel converter for power factor correction and associated operating method\" (US-9853537). https://patentable.app/patents/US-9853537","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9853537","json":"https://patentable.app/api/llm-context/US-9853537","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T16:18:22.443Z"}