Assignee
NR ELECTRIC CO LTD
CN·66 granted patents·6 pending applications·59 citations·filing 2013–2019
Top patents by PatentIndex Score
72 records- 0191US9634476B1Apparatus for breaking line bidirectional current and control method thereofNR ELECTRIC CO LTD·Filed 2013·Granted Apr 25, 2017·11 cites·12 claims
- 0289US10944254B2Closing control method for high-voltage direct-current circuit breakerNR ELECTRIC CO LTD·Filed 2017·Granted Mar 9, 2021·5 cites·6 claims
- 0389US10454265B2Bridge-type circuit, and direct current breaking device and control method thereofNR ELECTRIC CO LTD·Filed 2017·Granted Oct 22, 2019·4 cites·24 claims
- 0476US10763761B2Charging method for sub-module based hybrid converterNR ELECTRIC CO LTD·Filed 2018·Granted Sep 1, 2020·3 cites·11 claims
- 0575US11264794B2Series compensator and control methodNR ELECTRIC CO LTD·Filed 2018·Granted Mar 1, 2022·3 cites·16 claims
- 0675US10523131B2Reconfigurable MMC sub-module unit and control unit thereofNR ELECTRIC CO LTD·Filed 2017·Granted Dec 31, 2019·3 cites·4 claims
- 0775US10250070B2Line power control method and system for unified power flow controllerNR ELECTRIC CO LTD·Filed 2015·Granted Apr 2, 2019·3 cites·10 claims
- 0873US11264793B2Method and device for quickly eliminating ferromagnetic resonance of voltage transformerNR ELECTRIC CO LTD·Filed 2019·Granted Mar 1, 2022·1 cites·13 claims
- 0973US10164428B2Voltage-source multi-level converter, DC power transmission system, and fault processing method and deviceNR ELECTRIC CO LTD·Filed 2015·Granted Dec 25, 2018·3 cites·14 claims
- 1071US10840702B2Direct current power grid voltage control methodNR ELECTRIC CO LTD·Filed 2017·Granted Nov 17, 2020·1 cites·4 claims
- 1171US10181799B2Hybrid back-to-back direct current transmission system and power flow reversal control methodNR ELECTRIC CO LTD·Filed 2017·Granted Jan 15, 2019·2 cites·4 claims
- 1269US10418803B2Direct current switch-off device and control method thereofNR ELECTRIC CO LTD·Filed 2017·Granted Sep 17, 2019·1 cites·8 claims
- 1368US10949242B2Development of embedded type devices and running method for embedded type virtual device and systemNR ELECTRIC CO LTD·Filed 2017·Granted Mar 16, 2021·2 cites·11 claims
- 1468US10700525B2Method and apparatus for controlling hybrid direct-current transmission systemNR ELECTRIC CO LTD·Filed 2017·Granted Jun 30, 2020·1 cites·10 claims
- 1565US11355932B2Control system and control method for parallel converter systemNR ELECTRIC CO LTD·Filed 2018·Granted Jun 7, 2022·1 cites·10 claims
- 1665US9584007B2Current source converter differential protection method and relay protection deviceNR ELECTRIC CO LTD·Filed 2014·Granted Feb 28, 2017·2 cites·17 claims
- 1764US10483788B2Charging method for sub-module based hybrid converterNR ELECTRIC CO LTD·Filed 2018·Granted Nov 19, 2019·1 cites·14 claims
- 1864US10148083B2Fault current-suppressing damper topology circuit and control method thereof and converterNR ELECTRIC CO LTD·Filed 2016·Granted Dec 4, 2018·2 cites·13 claims
- 1964US9948104B2Tripolar VSC-HVDC transmission system and methodNR ELECTRIC CO LTD·Filed 2015·Granted Apr 17, 2018·2 cites·4 claims
- 2064US9876393B2Direct current (DC) voltage control method and apparatusNR ELECTRIC CO LTD·Filed 2014·Granted Jan 23, 2018·2 cites·12 claims
- 2163US10797487B2On-line input control method, on-line input and quit device for voltage-source converter unitNR ELECTRIC CO LTD·Filed 2017·Granted Oct 6, 2020·1 cites·7 claims
- 2258US10283965B2Method for incorporating non-operating station into operating system in multi-terminal flexible DC transmission systemNR ELECTRIC CO LTD·Filed 2014·Granted May 7, 2019·1 cites·8 claims
- 2358US10279686B2Locomotive regenerative electric energy feedback system with ice melting function and control methodNR ELECTRIC CO LTD·Filed 2017·Granted May 7, 2019·1 cites·5 claims
- 2456US10461534B2Starting method and stopping method for a static synchronous series compensatorNR ELECTRIC CO LTD·Filed 2015·Granted Oct 29, 2019·1 cites·17 claims
- 2555US10224833B2Drive signal modulation method of modular multilevel converter and fault isolation methodNR ELECTRIC CO LTD·Filed 2016·Granted Mar 5, 2019·1 cites·10 claims
- 2655US10014686B2Commutation control method and commutation control apparatusNR ELECTRIC CO LTD·Filed 2015·Granted Jul 3, 2018·1 cites·24 claims
- 2753US10923906B2Fault switch configuration and clearing method in flexible DC converter stationNR ELECTRIC CO LTD·Filed 2018·Granted Feb 16, 2021·0 cites·5 claims
- 2853US10476261B2Method and system for fault positioning and recovery of voltage source converterNR ELECTRIC CO LTD·Filed 2017·Granted Nov 12, 2019·0 cites·46 claims
- 2949US10326275B2Method for controlling zero sequence voltage of voltage source converterNR ELECTRIC CO LTD·Filed 2017·Granted Jun 18, 2019·0 cites·7 claims
- 3048US11342744B2Multi-voltage level direct current grid system and control protection methodNR ELECTRIC CO LTD·Filed 2019·Granted May 24, 2022·0 cites·14 claims
- 3148US10396562B2Series compensation device applicable to double-circuit lineNR ELECTRIC CO LTD·Filed 2017·Granted Aug 27, 2019·0 cites·9 claims
- 3247US11223291B2Bipolar bidirectional DC converter, and control method and control device thereforNR ELECTRIC CO LTD·Filed 2019·Granted Jan 11, 2022·0 cites·20 claims
- 3347US10396561B2Coordination control method of multi-terminal VSC-HVDC transmission systemNR ELECTRIC CO LTD·Filed 2013·Granted Aug 27, 2019·0 cites·11 claims
- 3447US10218184B2Method for inhibiting multiple inverter stations from entering passive control mode in island stateNR ELECTRIC CO LTD·Filed 2015·Granted Feb 26, 2019·0 cites·4 claims
- 3546US11881700B2Longitudinal differential protection method of transformerNR ELECTRIC CO LTD·Filed 2019·Granted Jan 23, 2024·0 cites·11 claims
- 3646US11329486B2Method for initiating flexible DC transmission system under isolated island conditionNR ELECTRIC CO LTD·Filed 2018·Granted May 10, 2022·0 cites·13 claims
- 3746US10237986B2Shell structure for thyristor trigger unitNR ELECTRIC CO LTD·Filed 2016·Granted Mar 19, 2019·0 cites·9 claims
- 3846US10007627B2Method and apparatus for automatic signal exchange between multiple embedded CPU boardsNR ELECTRIC CO LTD·Filed 2014·Granted Jun 26, 2018·0 cites·13 claims
- 3945US9640981B2Frequency-conversion differential protection method for output transformer of static frequency converter systemNR ELECTRIC CO LTD·Filed 2013·Granted May 2, 2017·0 cites·4 claims
- 4045US9362734B2Apparatus for limiting current of line or breaking current, and control method thereofNR ELECTRIC CO LTD·Filed 2013·Granted Jun 7, 2016·0 cites·8 claims
- 4144US11374411B2Converter control method and deviceNR ELECTRIC CO LTD·Filed 2018·Granted Jun 28, 2022·0 cites·13 claims
- 4244US11289905B2Voltage and current control method and device for direct-current power transmission systemNR ELECTRIC CO LTD·Filed 2018·Granted Mar 29, 2022·0 cites·10 claims
- 4344US11009542B2Thyristor valve test system based on cooperation of logical functions of softwareNR ELECTRIC CO LTD·Filed 2018·Granted May 18, 2021·0 cites·2 claims
- 4444US10267859B2Method and apparatus for identifying open phase of circuit breaker on basis of voltageNR ELECTRIC CO LTD·Filed 2016·Granted Apr 23, 2019·0 cites·15 claims
- 4543US11422204B2Method for detecting open phase of startup/standby transformer based on optical CTNR ELECTRIC CO LTD·Filed 2018·Granted Aug 23, 2022·0 cites·2 claims
- 4643US10535997B2Reactive power overexcitation regulation technology for synchronous generatorNR ELECTRIC CO LTD·Filed 2018·Granted Jan 14, 2020·0 cites·3 claims
- 4743US10461525B2Fault current limiting control and protection coordination method for converter of flexible direct current power transmission system operating in islanding stateNR ELECTRIC CO LTD·Filed 2017·Granted Oct 29, 2019·0 cites·10 claims
- 4843US9608511B2Method for charging modular multilevel converterNR ELECTRIC CO LTD·Filed 2014·Granted Mar 28, 2017·0 cites·7 claims
- 4942US10418816B2Passive islanding-to-grid-connected switch methodNR ELECTRIC CO LTD·Filed 2015·Granted Sep 17, 2019·0 cites·5 claims
- 5042US2016126827A1Sub-module, protection unit, converter, and control method thereofNR ELECTRIC CO LTD·Filed 2014·Application pending·0 cites
Showing the top 50 of 72 patent records by PatentIndex Score.
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