H02P 27/04 using variable-frequency supply voltage, e.g. inverter or converter supply voltage
Introduced: January 2006
Last revised: January 2016
Full Title
Arrangements or methods for the control of AC motors characterised by the kind of supply voltage > using variable-frequency supply voltage, e.g. inverter or converter supply voltage
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
Filing statistics
IPC H02P 27/04 belongs to the parent subclass H02P, which recorded 122,940 patent applications worldwide between 2013 and 2023. Annual filings grew from 9,364 in 2013 to 11,656 in 2023 (+24%), peaking at 12,542 applications in 2020. The most active applicants in class H02 are SGCC(STATE GRID CORPORATION OF CHINA) (54,496 applications), MITSUBISHI ELECTRIC CORPORATION (10,495 applications) and TOYOTA MOTOR CORPORATION (9,464 applications).
Source: EPO PATSTAT, worldwide filings
4 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H02P 27/048 using AC supply for only the rotor circuit or only the stator circuit
- H02P 27/05 using AC supply for both the rotor and the stator circuits, the frequency of supply to at least one circuit being variable
- H02P 27/06 using DC to AC converters or inverters
- H02P 27/16 using AC to AC converters without intermediate conversion to DC
Top Applicants
Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094