Direct voltage vector control for field weakening operation of PM machines

Author

Zhang, Yuan ; Lin, Fei ; Zhang, Zheng ; Xu, Longya

Author_Institution

Ohio State Univ., Columbus, OH, USA

fYear

2010

fDate

12-13 Feb. 2010

Firstpage

20

Lastpage

24

Abstract

The critical control issues of deep field weakening operation of PM machines are analyzed in this paper. The mathematical model of PM machines and the traditional current vector control method are reviewed. Then a simple yet reliable control method based on direct voltage vector control for deep field weakening operation of PM machines is proposed. When the speed is below the base speed, the traditional current vector control is applied. When the speed is above the base speed, the maximum voltage vector is applied to the PM machine and the direction of the voltage vector is determined by a phase angle controller. The direct voltage vector control algorithm makes full use of the DC bus voltage which helps achieve the maximum possible torque capability and reduce the copper losses in machine windings. Theoretical analysis is substantiated by experimental results.

Keywords

electric current control; machine vector control; permanent magnet machines; phase control; synchronous machines; voltage control; current vector control method; deep field weakening operation; direct voltage vector control; permanent magnet synchronous machines; phase angle controller; Current control; Hybrid electric vehicles; Machine vector control; Magnetic variables control; Mathematical model; Mathematics; Regulators; Switches; Torque; Voltage control; Constant Power Speed Ration (CPSR); Field weakening operation; PM machines; direct voltage vector control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Conference at Illinois (PECI), 2010

Conference_Location

Urbana-Champaign, IL

Print_ISBN

978-1-4244-5902-5

Type

conf

DOI

10.1109/PECI.2010.5437161

Filename

5437161