International OPEN ACCESS Journal Of Modern Engineering Research (IJMER) | IJMER | ISSN: 2249–6645 | www.ijmer.com | Vol. 4 | Iss. 5| May. 2014 | 43 | Matlab Simulation And Comparison Of Single Phase To Three Phase Converter Fed Induction Motor Drive Using One And Two Rectifier Ashish Dongre 1 , Sanjay Dhamse 2 1, 2 (Electrical Engineering Department, Government College of Engineering Aurangabad, India) I. INTRODUCTION In many villages only single phase supply is available. Farming, residential appliances require motors of different type for various operations such as pumping, grinding, material movement etc. Motors used in such operations may be rated in kilo watt power range and single phase motor is not suitable for such higher power ratings. Further three phase motors have many advantages over single phase motors in terms of machine efficiency, power factor, and torque ripples. The idea of operating a three phase motors from single phase supply is not new [1]-[3]. Conventionally a three phase induction motor drive consists of a front end full bridge controlled rectifier, dc link capacitor and an inverter as shown in figure 1. It consists of maximum ten switches. This type of configuration requires higher power rating switches in rectifier compared to inverter side [4]. Whereas a parallel connected system consists of a parallel connected full bridge front end controlled rectifier, dc link capacitor bank and a regular six-switch pulse width modulated (PWM) inverter to power a three-phase induction motor from a single-phase ac mains. The block diagram of parallel rectifier system is shown in figure 2. This parallel connected rectifier configuration in all consists of 14 switches. Due to parallel connection the power rating of the rectifier switches is reduced. There has been a considerable increase in the use of parallel converters to improve the power capability, reliability, efficiency, redundancy, and to decrease the cost. Figure 1: Conventional single phase to three phase induction motor drive New regulations impose more strict limits on current harmonics injected by power converters [5]. These limits can be achieved with the help of pulse width-modulated rectifiers. These PWM converters, consists of power switches like insulated gate bipolar transistors (IGBTs), gate-turn-off thyristors (GTOs), or integrated gate Abstract: This paper presents MATLAB simulation and comparison of three phase induction motor drive supplied from single phase supply with one rectifier and two rectifiers systems. To meet the new harmonic regulation produced by converters both system incorporates an active input current shaping feature that results in sinusoidal input current at close to unity power factor. Even with the increase in the number of switches, the total harmonic distortion in supply current of the parallel connected two rectifier system is lower than that of a conventional one. The model of the system is developed in MATLAB software. All simulation results and comparison are presented as well. Keywords: AC to DC to AC converter, high power factor converters, parallel converter, Vector control.