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. 06, 2025
Filed:
Feb. 08, 2021
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Shinya Kawai, Tokyo, JP;
Kenshi Takao, Tokyo, JP;
Shunsuke Tobayashi, Tokyo, JP;
Chikara Morito, Tokyo, JP;
Haruyuki Yamaguchi, Tokyo, JP;
TMEIC CORPORATION, Chuo-ku, JP;
Abstract
A drive system () drives a multi-phase AC motor () having a plurality of windings. The drive system () includes a first power converter (U), a second power converter (V), a first conversion controller (U), and a second conversion controller (V). The first power converter (U) causes a current to flow through a winding of a first phase of the multi-phase AC motor (). The second power converter (V) causes a current to flow through a winding of a second phase of the multi-phase AC motor (). The first conversion controller (U) decides on either a three-level phase voltage waveform or a five-level phase voltage waveform on the basis of setting information for designating a type of phase voltage waveform and controls the first power converter (U) so that the decided phase voltage waveform is output from the first power converter (U). The second conversion controller (V) controls the second power converter (V) so that a phase voltage waveform having the same type as the phase voltage waveform of the first power converter (U) is output from the second power converter (V) on the basis of the setting information for designating the type of phase voltage waveform.