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:
Mar. 22, 2022
Filed:
Nov. 15, 2018
Sanden Holdings Corporation, Isesaki, JP;
Tatsuki Kashihara, Isesaki, JP;
Takahiro Saigusa, Isesaki, JP;
SANDEN HOLDINGS CORPORATION, Isesaki, JP;
Abstract
There is provided a power conversion device capable of eliminating a disadvantage of a sharp temperature rise in a switching element by using a discontinuous modulation method. The power conversion device includes a phase voltage command operation unitwhich calculates a sinusoidal modulation voltage command value to be applied to a motor, an inter-line modulation operation unitwhich, based on the sinusoidal modulation voltage command value, calculates a discontinuous modulation voltage command value for allowing an ON/OFF state of a switching element of one phase of a three-phase inverter circuitto be fixed, and modulating ON/OFF states of switching elements of other two phases, and a PWM signal generation unit. The inter-line modulation operation unit sets a switching density of the switching element of at least one phase to a value different from that of the other phase.