H02H 7/1255
Responsive to internal faults
Official title: {responsive to internal faults, e.g. by monitoring ripple in output voltage}
H02H7/1255 (Responsive to internal faults) appears on 59 US grants and 48 published applications in this corpus.
Search patents in H02H- Granted patents
- 59
- Published applications
- 48
- Assignees
- 59
- Inventors
- 161
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 2 | 5 |
| 2014 | 4 | 5 |
| 2015 | 3 | 4 |
| 2016 | 2 | 3 |
| 2017 | 3 | 6 |
| 2018 | 2 | 2 |
| 2019 | 6 | 4 |
| 2020 | 2 | 3 |
| 2021 | 4 | 3 |
| 2022 | 3 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Power converter current sense fault detection28 Oct 2025US 12,456,857 B2Cypress Semiconductor Corporation
- Short-circuit protection apparatus, short-circuit protection method for target circuit, and power conversion device3 Dec 2024US 12,160,167 B2Huawei Digital Power Technologies Co., Ltd.
- Device and process for fault detection of a power device12 Dec 2023US 11,843,240 B2Wolfspeed, Inc.
- Voltage and current protection in isolated switched-mode power converters with secondary-side rectified voltage sensing15 Nov 2022US 11,502,595 B2Infineon Technologies Austria AG
- Method for the fault management of a fault in a DC voltage line and converter assembly for carrying out the method27 Sep 2022US 11,456,592 B2Siemens Energy Global GmbH & Co. KG
- Monitoring device for a converter of a rail vehicle17 Jul 2025US 2025/0229635 A1Siemens Mobility GmbH
- Power converter current sense fault detection22 Aug 2024US 2024/0280645 A1Cypress Semiconductor Corporation
- Short-Circuit Protection Apparatus, Short-Circuit Protection Method for Target Circuit, and Power Conversion Device9 Mar 2023US 2023/0076274 A1Huawei Digital Power Technologies Co., Ltd.
- Device and process for fault detection of a power device8 Dec 2022US 2022/0393460 A1Cree, Inc.
- A commutation failure protection method, and apparatus, computer device and storage medium thereof17 Nov 2022US 2022/0365125 A1South China University of Technology
Most cited
By later US patents
- On-board electrical system isolating circuit for DC/DC converters, and method for isolating an on-board electrical system from a DC/DC converter44US 10,232,718 B2Robert Bosch GmbH · 2019
- Power supply with power factor correction and protection against failures of the power factor correction36US 5,617,013 ABull HN Information Systems Italia S.p.A. · 1997
- Protecting apparatus for secondary excitation type variable speed AC generator/motor28US 4,812,729 AHitachi, Ltd. · 1989
- Input overcurrent suppression circuit25US 5,726,849 AFujitsu Limited · 1998
- Controlled rectifier motor drive system including d.c. fault detection and commutation means19US 4,016,468 AGeneral Electric Company · 1977