ECONOMIC SINGLE-PHASE TO THREE-PHASE CONVERTER FOR LOW POWER MOTOR DRIVES
Author(s):
NIDHIN JOSE
Keywords:
Induction motor; Three-phase motor; Single-phase motor; High frequency switches; Triac
Abstract
In his paper, a economical single-phase to three-phase converter is proposed to operate three-phase motors in single-phase supply with variable voltage and fixed frequency .In conventional single-phase to three-phase converters the number of switches are very high which increase its cost. In the proposed converter the numbers of switches are less which makes it economical. The paper also presents the output voltage control of economic single-phase to three-phase converter using triac which provides soft starting capability to the three-phase motor. This converter helps to run three-phase motors which are more efficient compared to single-phase motors. Here we are using two close loop controllers: one for controlling the dc link voltage and the other one for controlling the inverter output voltage. The proposed converter uses four switches (IGBT, MOSFET), two capacitors, one triac for the conversion. This paper explains two sequence of operation of economical single-phase to three-phase converter: one is positive sequence operation and other one is negative sequence operation.
Article Details
Unique Paper ID: 147248

Publication Volume & Issue: Volume 5, Issue 6

Page(s): 161 - 168
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Volume 6 Issue 4

Last Date 25 September 2019


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