公开(公告)号：US20190260318A1

公开(公告)日：2019-08-22

申请号：US16399253

申请日：2019-04-30

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Reiji YAMASAKI ,  Yutaka ONO

IPC: H02P21/14 ,  G05B13/02 ,  H02P25/089 ,  H02P21/13 ,  H02P21/00 ,  H02P21/18

Abstract: In a sensorless control of a motor, due to the characteristic of a response frequency, an induced voltage, a magnetic pole position estimation gain, a current control gain, and a speed control gain are closely related. An object of the invention is to enable the induced voltage and the frequency characteristic of a magnetic pole position estimation system to be clearly designed and to theoretically and quantitatively design all of the control gains necessary for the sensorless control so as to solve a problem that a method of designing those parameters cannot be established and the parameters have to be adjusted in a try and error manner. A control device has an estimator estimating an estimation induced voltage and a phase error of a motor by applying an induced-voltage observer and a controller controlling the motor on the basis of the estimation induced voltage and the phase error.

公开(公告)号：US20190006978A1

公开(公告)日：2019-01-03

申请号：US15979005

申请日：2018-05-14

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Reiji YAMASAKI ,  Yoshitaro KONDO

IPC: H02P27/08 ,  H02M7/5387 ,  H02M1/08

CPC classification number: H02P27/085 ,  H02M1/08 ,  H02M7/53871 ,  H02M2001/0009 ,  H02P6/16

Abstract: A calculation apparatus 100 includes an encoder 101 configured to detect rising edges of PWM signals having at least three or more phases in each of the phases, and a register 103 configured to store, at a timing after the PWM signals having the respective phases rise and after AD conversion of a current value of a drive signal of a motor obtained by the PWM signals, a difference value between the AD-converted current value and a previous AD-converted current value for each phase.

公开(公告)号：US20180076748A1

公开(公告)日：2018-03-15

申请号：US15699791

申请日：2017-09-08

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Reiji YAMASAKI ,  Yutaka ONO

IPC: H02P21/14 ,  H02P21/00 ,  G05B13/02 ,  H02P25/089

CPC classification number: H02P21/14 ,  G05B13/02 ,  H02P21/0021 ,  H02P21/13 ,  H02P21/18 ,  H02P25/089 ,  H02P2203/11

Abstract: In a sensorless control of a motor, due to the characteristic of a response frequency, an induced voltage, a magnetic pole position estimation gain, a current control gain, and a speed control gain are closely related. An object of the invention is to enable the induced voltage and the frequency characteristic of a magnetic pole position estimation system to be clearly designed and to theoretically and quantitatively design all of the control gains necessary for the sensorless control so as to solve a problem that a method of designing those parameters cannot be established and the parameters have to be adjusted in a try and error manner. A control device has an estimator estimating an estimation induced voltage and a phase error of a motor by applying an induced-voltage observer and a controller controlling the motor on the basis of the estimation induced voltage and the phase error.