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:
Jan. 01, 2019
Filed:
Jun. 29, 2017
Toshiba Mitsubishi-electric Industrial Systems Corporation, Tokyo, JP;
Wisconsin Alumni Research Foundation, Madison, WI (US);
Yang Xu, Madison, MI (US);
Ryo Iida, Tokyo, JP;
Robert D. Lorenz, Madison, WI (US);
Yukai Wang, Albany, NY (US);
Toshiba Mitsubishi-Electric Industrial Systems Corporation, Tokyo, JP;
Wisconsin Alumni Research Foundation, Madison, WI (US);
Abstract
A controller includes a torque command value calculation module configured to calculate a torque command based on a speed command of the motor, an output voltage controlling module configured to control an output voltage of the power converter based on the torque command calculated by the torque command value calculation module, a voltage command value correcting module configured to correct a voltage command to the power converter based on a measured output voltage from the power converter, a flux estimation module configured to estimate stator flux and rotor flux of the motor in a subsequent control period based on the voltage command by the voltage command value correcting module and a measured current of the stator and a motor speed estimation module configured to estimate a speed of the motor in a subsequent control period based on the flux estimated by the flux estimation module.