Title:
電流整形による最適なトルクリプル低減
Document Type and Number:
Japanese Patent JP6657418
Kind Code:
B2
Abstract:
A motor drive system and method for controlling an electric motor. The motor drive system includes a plurality of phase lines switchably connected to the electric motor, a plurality of controllable switches, and a controller. The controller is communicatively coupled to the plurality of controllable switches and configured to receive a signal indicative of a rotor speed and a rotor position from the rotor sensor. The controller generates a value expressing a back-electromotive force (back-EMF) as a function of the rotor position with respect to a rotating frame of reference. Based on the rotor position, the controller determines a plurality of phase currents that reduce a torque ripple of the electric motor to approximately zero. The controller actuates the controllable switches to supply the electric motor with the plurality of phase currents.
Inventors:
Leandro Manarac Lorilla
Application Number:
JP2018545975A
Publication Date:
March 04, 2020
Filing Date:
February 22, 2017
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
H02P21/05; H02P6/10; H02P29/50
Domestic Patent References:
| JP2008172866A | ||||
| JP2011151883A | ||||
| JP2014168357A | ||||
| JP2012105403A |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima
Morita Taku
Junichi Maekawa
Hiroyasu Ninomiya
Ueshima