MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202047044731 A) filed by Mitsubishi Electric Corporation on October 14, 2020, for Rotary Electric Machine Control Device.
Inventors include Minobe, Morishige; and Kato, Toshiaki.
The application for the patent was published on July 17, 2026, under issue no. 29/2026.
Abstract: Provided is a rotary electric machine control device in which an angle error in a resolver can be easily corrected even in a case where a power supply is applied after being cut off. The rotary electric machine control device is provided with: a frequency analysis unit that performs frequency analysis on a signal to be used for control of a rotary electric machine, and calculates an amplitude analysis value and a phase analysis value of a preset component; an angle error estimation unit that estimates an angle error in a resolver of the rotary electric machine on the basis of the amplitude analysis value and the phase analysis value calculated by the frequency analysis unit; a detection position correction unit that corrects a detection position in the resolver on the basis of the angle error estimated by the angle error estimation unit; a storage unit that stores a phase analysis value when the angle error estimation unit estimates the angle error in the resolver; and a correction phase calculation unit that, when necessity of updating a correction phase is determined, calculates a correction phase for the angle error estimated by the angle error estimation unit on the basis of the difference between the phase analysis value calculated by the frequency analysis unit and a phase analysis value corresponding to information stored in the storage unit.
Disclaimer: Curated by HT Syndication.
