The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2024
Filed:
Jul. 31, 2020
Hitachi Astemo, Ltd., Hitachinaka, JP;
Toshiyuki Ajima, Tokyo, JP;
Takafumi Hara, Tokyo, JP;
Akihiro Ashida, Hitachinaka, JP;
Hirokazu Matsui, Hitachinaka, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
An inverter control deviceincludes a current control unitthat outputs a voltage commands (Vd*, Vq*), a modulation wave control unitthat generates a modulation wave based on the voltage commands (Vd*, Vq*), a pulse generation unitthat generates a PWM pulse for controlling an inverterusing a modulation wave and a carrier wave of a predetermined frequency, and a pulse shift unitthat corrects the phase of the PWM pulse such that the PWM pulse is output in a phase corresponding to a harmonic of a predetermined order of the modulation wave in the near-zero-cross region including the zero-cross point at which the modulation wave changes across 0.