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:
Jul. 13, 2021
Filed:
Aug. 24, 2018
Nidec Tosok Corporation, Zama, JP;
Kei Sato, Zama, JP;
NIDEC TOSOK CORPORATION, Kanagawa, JP;
Abstract
A signal generator generates a control signal that causes an inverter to supply a drive current in an AC voltage waveform to each phase of a motor. The signal generator alternately repeats a first energization cycle in which only a switch on an upper side of an arm is set to an ON state and a second energization cycle in which only a switch on a lower side of the arm is set to the ON state in the AC voltage waveform having a third energization cycle therebetween, changes the switches on the upper side and the lower side of the arm to the ON state and an OFF state in order in the third energization cycle, continuously changes an output voltage of the switch that has been further changed to the ON state, and generates a control signal to cause waveforms of the preceding and succeeding first energization cycle and second energization cycle to be continuous with the third energization cycle by varying a phase of the first to the third energization cycles in each phase.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile