H02M 7/4833
Capacitor voltage balancing
Official title: {Capacitor voltage balancing}
H02M7/4833 (Capacitor voltage balancing) appears on 326 US grants and 420 published applications in this corpus.
Search patents in H02M- Granted patents
- 326
- Published applications
- 420
- Assignees
- 199
- Inventors
- 918
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 3 |
| 2012 | 1 | 4 |
| 2013 | 2 | 4 |
| 2014 | 1 | 11 |
| 2015 | 9 | 11 |
| 2016 | 9 | 10 |
| 2017 | 16 | 11 |
| 2018 | 16 | 19 |
| 2019 | 14 | 14 |
| 2020 | 26 | 33 |
| 2021 | 24 | 39 |
| 2022 | 41 | 40 |
| 2023 | 28 | 63 |
| 2024 | 40 | 50 |
| 2025 | 57 | 54 |
| 2026 | 28 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Circular current suppression method, switch control device, and power conversion system15 Sep 2026US 12,738,834 B2Delta Electronics, Inc.
- Power conversion device comprising three-level inverter and balance circuit and control method thereof15 Sep 2026US 12,738,863 B2Delta Electronics (Shanghai) Co., Ltd.
- Circulating current control for a modular multilevel converter8 Sep 2026US 12,732,092 B2Mitsubishi Electric Corporation
- Voltage conversion unit, inverter, and photovoltaic power generation system1 Sep 2026US 12,726,115 B2Huawei Digital Power Technologies Co., Ltd.
- Controlling charge-balance and transients in a multi-level power converter18 Aug 2026US 12,712,448 B2Murata Manufacturing Co., Ltd.
- Power converter and method of operating17 Sep 2026US 2026/0280412 A1GE Aviation Systems LLC
- Voltage balancing circuits with integrated braking chopper for series connected inverters10 Sep 2026US 2026/0269742 A1ABB Schweiz AG
- Power conversion device and method of controlling the same3 Sep 2026US 2026/0261215 A1Mitsubishi Electric Corporation
- Power conversion device27 Aug 2026US 2026/0254366 A1Mitsubishi Electric Corporation
- Voltage regulation method for three-phase four-bridge-arm three-level inverter27 Aug 2026US 2026/0254371 A1Shanghai Chint Power Systems Co., Ltd.
Most cited
By later US patents
- Capacitor charge balancing technique for a three-level PWM power converter207US 6,842,354 B1Rockwell Automation Technologies, Inc. · 2005
- DC voltage balance control for three-level NPC power converters with even-order harmonic elimination scheme79US 7,495,938 B2Rockwell Automation Technologies, Inc. · 2009
- Control apparatus for suppressing a third harmonic neutral point voltage in a three level inverter55US 5,321,599 AHitachi, Ltd. · 1994
- Three level power converting apparatus having means for balancing DC component thereof40US 5,627,742 AHitachi, Ltd. · 1997
- Low harmonic diode clamped converter/inverter29US 7,040,391 B2Baker Hughes Incorporated · 2006