Invention Grant
US08816617B2 Three-phase motor controller, three-phase motor system, three-phase motor control method and program 有权
三相电机控制器,三相电机系统,三相电机控制方式和程序

  • Patent Title: Three-phase motor controller, three-phase motor system, three-phase motor control method and program
  • Patent Title (中): 三相电机控制器,三相电机系统,三相电机控制方式和程序
  • Application No.: US13255146
    Application Date: 2010-03-09
  • Publication No.: US08816617B2
    Publication Date: 2014-08-26
  • Inventor: Yoshiho YanagitaKazuhiko Aoki
  • Applicant: Yoshiho YanagitaKazuhiko Aoki
  • Applicant Address: JP Tokyo
  • Assignee: NEC Corporation
  • Current Assignee: NEC Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Sughrue Mion, PLLC
  • Priority: JP2009-055299 20090309; JP2009-258996 20091112
  • International Application: PCT/JP2010/053848 WO 20100309
  • International Announcement: WO2010/104059 WO 20100916
  • Main IPC: H02P21/00
  • IPC: H02P21/00
Three-phase motor controller, three-phase motor system, three-phase motor control method and program
Abstract:
A three-phase motor control apparatus 4 controlling a driver which drives a three-phase motor includes: a desired rotation angle generation section 5 which generates a desired rotation angle; a rotation angle detector 2 which detects a detected rotation angle which is the rotation angle of said three phase motor; a feedback controller 6 which generates a q-axis command reference value which controls the q-axis voltage or the q-axis current of the three-phase motor 1 in response to the desired rotation angle and the detected rotation angle; a drive torque correction section and an adder 10 which generate a q-axis command value by correcting the q-axis command reference value; and a two-phase to three-phase transformation section 8 which generates a control signal which controls the driver circuit 3 which drives the three-phase motor in response to the q-axis command. The drive torque correction section 7 includes an angle look-up table 11 which contains elements respectively associated with angle ranges defined for the rotation angle of the three-phase motor, and selects any of the elements in response to the detected rotation angle. The q-axis command is generated by correcting the q-axis command reference value based on the value of the selected element.
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