Design, Simulate and Development of a Computer Controlled Three-Phase Inverter for Precise Speed Variation of a Three-Phase Induction Motor

被引:0
作者
Huq, Aziz Ul. [1 ]
Bashar, Abul. [1 ]
Ahmed, Farruk [2 ]
机构
[1] IUBAT, EEE, Dhaka, Bangladesh
[2] Independent Univ Bangladesh, Sch Engn & Comp Sci, Dhaka, Bangladesh
关键词
inverter; drive; motor; mosfet; vco;
D O I
10.4304/jcp.8.5.1109-1118
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
The speed of a three-phase induction motor can be varied within a wide range other than its rated value if its input parameters (frequency, voltages) are varied properly. For industrial, mainly in knitting and some other sophisticated use of three-phase induction motor, precise and accurate control of the speed of the motor is necessary. The present three-phase inverter is so designed that its input parameters can be easily varied through proper software program and computer interfacing hardware. N-channel MOSFET is used as power device but may be replaced with IGBT. A special one way delay circuit is introduced to ensure non short circuit situation. The input frequency to the inverter can be varied by varying the input voltage to the Voltage Controlled Oscillator (VCO). The proper input voltage to the inverter is set by Automatic Voltage Regulator (AVR) instructed by the computer. Though the frequency of the inverter can be varied between a wide range, the inter phase separation remains always 1200 yielding a true pattern of a three-phase power supply. Introduction of microcomputer and associate of software programs in three-phase induction motor control system as proposed is accurate and reliable in terms of accurate and complex speed control of the motor.
引用
收藏
页码:1109 / 1118
页数:10
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