Efficiency control of field oriented operation based on the open-loop VVVF drivers

Author

Chen, Sen ; Yeh, Sheng-Nian

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan

fYear

1991

fDate

Sept. 28 1991-Oct. 4 1991

Firstpage

58

Abstract

A closed-loop control for field-oriented induction motor drives by considering the efficiency in the steady-state operation is presented. The concept is based on the operation properties of variable-voltage variable frequency (VVVF) inverters by regulating the exciting magnetic field at d-axis. The nonideal factors affecting machine performance, such as core saturation, source harmonics, and skin effect are considered. Efficiency evaluations of constant flux operation are also given for comparison. The principle of the field-oriented control on induction motors is then introduced to find out the optimal efficiency point of dq model induction of the motor by using the result of the VVVF simulation. The experimental results of a 2 HP induction motor field-oriented control are given to confirm the analysis.<>

Keywords

harmonics; induction motors; machine control; magnetic fields; skin effect; 2 hp; closed-loop control; core saturation; d-axis; dq model induction; exciting magnetic field; field oriented operation; field-oriented control; open-loop VVVF drivers; optimal efficiency point; skin effect; source harmonics; variable-voltage variable frequency; Frequency; Induction motor drives; Induction motors; Inverters; Magnetic cores; Magnetic fields; Magnetic properties; Magnetic variables control; Skin effect; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE

Conference_Location

Dearborn, MI, USA

Print_ISBN

0-7803-0453-5

Type

conf

DOI

10.1109/IAS.1991.178133

Filename

178133