Title:
POWER CONVERSION DEVICE
Document Type and Number:
Japanese Patent JP2017046391
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a control device for a PMSM that achieves improvement in stability for light load and the maximum torque/current for heavy load and allows weak magnetic flux control.SOLUTION: The control device for a PMSM80 configured to control a power converter 70 by decomposing the current of the PMSM80 driven by the power converter 70 into d-axis current and q-axis current, comprises: means for controlling the d-axis current such that it has a d-axis current command value i; means for controlling the q-axis current such that it has a q-axis current command value i; means for calculating a d-axis current compensation value from the q-axis current command value i; means for calculating a d-axis current command value iby adding the d-axis current command value and the d-axis current compensation value; and current adjusters 20a, 20b, a coordinate converter 15, a PWM circuit 13 and so on, which control the power converter 70 by using the d, q-axis current command values i, i. The d-axis current compensation value is equal to or larger than zero and is the decrease function of the absolute value of the q-axis current command value.SELECTED DRAWING: Figure 1
Inventors:
NOMURA NAOFUMI
SAKURAI KENHIKO
SAKURAI KENHIKO
Application Number:
JP2015165423A
Publication Date:
March 02, 2017
Filing Date:
August 25, 2015
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
H02P21/00; H02P27/04
Domestic Patent References:
| JP2000262100A | 2000-09-22 | |||
| JP2014007916A | 2014-01-16 | |||
| JPH11127600A | 1999-05-11 | |||
| JP2009290929A | 2009-12-10 |
Attorney, Agent or Firm:
Yuichi Morita