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CPC Subgroup
H02P 21/08

Indirect field-oriented control; Rotor flux feed-forward control

Full Title

Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation > Rotor flux based control involving the use of rotor position or rotor speed sensors > Indirect field-oriented control; Rotor flux feed-forward control

1 direct subcode

Child Classifications

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  • H02P 21/09 Field phase angle calculation based on rotor voltage equation by adding slip frequency and speed proportional frequency

Top Applicants

Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 24,515
  2. MITSUBISHI ELECTRIC CORPORATION JP 11,346
  3. SIEMENS DE 9,026
  4. ROBERT BOSCH DE 9,005
  5. SAMSUNG ELECTRONICS COMPANY KR 6,729
  6. GUANGDONG POWER GRID CORPORATION 5,740
  7. DENSO CORPORATION JP 5,077
  8. LG ELECTRONICS KR 5,041
  9. LG INNOTEK COMPANY KR 4,442
  10. TOYOTA MOTOR CORPORATION 4,349