Calculated performance of AC motors in a single-phase to three-phase converter application

Author

Yris, JuanCarlos ; Calleja, Hugo

Author_Institution

Univ. Juarez Autonoma de Tabasco, Mexico

fYear

1996

fDate

14-17 Oct 1996

Firstpage

156

Lastpage

159

Abstract

In this paper the performance of induction motors operating with a single-phase to three-phase converter is analyzed. Usually, the motor is connected in open-delta, one side is fed by the AC supply, and the other side by a PWM waveform; as a result, the motor operates under unbalanced conditions. The effect of this unbalance is evaluated taking into account the percent of voltage unbalance, as defined by NEMA standards; the reduction of the torque; the additional rotor losses, and the overheating of the motor. For evaluation purposes, a programmed PWM technique and a class B, ¾ HP induction motor are used

Keywords

AC-AC power convertors; PWM power convertors; fractional-horsepower motors; induction motors; losses; rotors; standards; 0.75 hp; AC motors; AC supply; NEMA standards; PWM waveform; class B motor; induction motors; motor overheating; open-delta connected motor; programmed PWM technique; rotor losses; single-phase to three-phase converter application; torque reduction; unbalanced conditions; AC motors; Commutation; Equations; Frequency; Pulse width modulation; Pulse width modulation inverters; Rotors; Testing; Torque; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Congress, 1996. Technical Proceedings. CIEP '96., V IEEE International

Conference_Location

Cuernavaca

Print_ISBN

0-7803-3633-X

Type

conf

DOI

10.1109/CIEP.1996.618531

Filename

618531