NR ENGINEERING CO., LTD.
59Patents
59Active
59Granted
54Portfolio score
Filing activity: Jul 1, 2013 → Aug 15, 2019
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US10944254B2 | Closing control method for high-voltage direct-current circuit breaker | Electricity | 5 | Active |
| US9634476B1 | Apparatus for breaking line bidirectional current and control method thereof | Electricity | 4 | Active |
| US10454265B2 | Bridge-type circuit, and direct current breaking device and control method thereof | Electricity | 3 | Active |
| US11264794B2 | Series compensator and control method | Emerging Cross-Sectional Technologies | 2 | Active |
| US10523131B2 | Reconfigurable MMC sub-module unit and control unit thereof | Electricity | 2 | Active |
| US10164428B2 | Voltage-source multi-level converter, DC power transmission system, and fault processing method and device | Electricity | 2 | Active |
| US10763761B2 | Charging method for sub-module based hybrid converter | Emerging Cross-Sectional Technologies | 2 | Active |
| US9876393B2 | Direct current (DC) voltage control method and apparatus | Emerging Cross-Sectional Technologies | 1 | Active |
| US10418803B2 | Direct current switch-off device and control method thereof | Electricity | 1 | Active |
| US10224833B2 | Drive signal modulation method of modular multilevel converter and fault isolation method | Emerging Cross-Sectional Technologies | 1 | Active |
| US10797487B2 | On-line input control method, on-line input and quit device for voltage-source converter unit | Emerging Cross-Sectional Technologies | 1 | Active |
| US10283965B2 | Method for incorporating non-operating station into operating system in multi-terminal flexible DC transmission system | Emerging Cross-Sectional Technologies | 1 | Active |
| US10279686B2 | Locomotive regenerative electric energy feedback system with ice melting function and control method | Performing Operations; Transporting | 1 | Active |
| US9584007B2 | Current source converter differential protection method and relay protection device | Electricity | 1 | Active |
| US11264793B2 | Method and device for quickly eliminating ferromagnetic resonance of voltage transformer | Electricity | 1 | Active |
| US10840702B2 | Direct current power grid voltage control method | Emerging Cross-Sectional Technologies | 1 | Active |
| US10148083B2 | Fault current-suppressing damper topology circuit and control method thereof and converter | Electricity | 1 | Active |
| US10949242B2 | Development of embedded type devices and running method for embedded type virtual device and system | Physics | 1 | Active |
| US10461534B2 | Starting method and stopping method for a static synchronous series compensator | Emerging Cross-Sectional Technologies | 1 | Active |
| US11264891B2 | Redundant energy acquisition circuit of power module, and control method thereof | Emerging Cross-Sectional Technologies | 0 | Active |
| US10148091B2 | High voltage direct current power transmission series valve group control device | Emerging Cross-Sectional Technologies | 0 | Active |
| US10637287B2 | Apparatus and method for ensuring reliability of trip protection of intelligent substation | Emerging Cross-Sectional Technologies | 0 | Active |
| US11223291B2 | Bipolar bidirectional DC converter, and control method and control device therefor | Emerging Cross-Sectional Technologies | 0 | Active |
| US10122292B2 | Converter valve | Electricity | 0 | Active |
| US10267859B2 | Method and apparatus for identifying open phase of circuit breaker on basis of voltage | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.