International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 3 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
MATLAB Simulation on Speed Control of Four Quadrant DC Drive Using Chopper Ragini Sonbarse1, Ankita Ringe2, Prof. A. A. Bhalerao3 1, 2UG
student, Dept. Of EE, DES’s COET, Maharashtra, India Professor, Dept. of EE, DES’s COET, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------3Assistant
Abstract - This paper deals with the speed of dc motor can be control by using chopper is to designed the four quadrant speed control model. the speed control of dc motor provide designed model for four quadrant in both direction i.e. clockwise direction, counter clockwise direction along with braking of the dc motor .this operation will not superior than ac motor , compare with dc motor because the ac motor changing the rotation of motor is unmanageable and complicated to design as compared with the dc motor. Therefore for the smooth in operation we can used the insulate gate bipolar transistor (IGBT). For speed control of dc motor in both direction the chopper circuit is designed by using IGBT. The pulse width modulation (PWM) is used foe switching operation of IGBT. The PWM designed signal model can be generated by using IC LM324 (quart op-amp). To control the direction and the speed of motor, the four quadrant speed control technique is not a complicated.
unregulated the energy absorption and injection constitute this are the two process of a switching cycle presented as duty cycle of operation. 1.1DC Chopper A chopper is a nothing but simple static switch which is used to convertor fixed dc into variable dc. the thyristor, power BJT, power MOSFET,GTO or IGBT this are the power semiconductor device which is used for a chopper circuit can be forced commutator. In switching element its losses will be low, efficiency will be high which is provide its circuit and either fully ON or fully OFF operation. In this switching element to avoid undesirable or unwanted effect for high switching frequency or may require smoothing frequency.
Key Words: DC motor. Four Quadrant Chopper, Hybrid Electric Vehicles, I.C. Engines, IGBT.
1. INTRODUCTION An electric motor is the part of electric drive, its energy transmitting shaft and power controlling. There are two types of electric drive i.e DC drives and AC drives. The application DC motor are use extensively speed drives and position control. The armature voltage control can be controlled by there speed below the base speed. The field – flux control is obtained by the speed above the base speed. As compare to the AC motor a speed control method does the DC motor are simple is construction and therefore its less expensive. Where the wide speed range control is required the DC motor are preferred. The application of DC drives are requiring adjustable speed control, frequent starting, good speed regulation, braking and reversing. The most important application are paper mile, rolling miles, mine winder, hoists, printing presses, mashing tools, traction, textile mills, excavators and cranes. The servo motor for tracking and positioning are use fractional hours power DC motor. In switch mode power supplies the wide application of DC-DC convertor. In renewable resource the input voltage of converter varies in a wide range especially the source is derived. Therefore, the output voltage expected to have ripple and harmonic free input to these convertor is © 2017, IRJET
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Impact Factor value: 5.181
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Fig-1: DC Chopper circuit and waveforms
1.2 Principle of Chopper Operation The chopper is a convertor which is controlled commutation convertor. the chopper use is to provided with extinguishing auxiliary circuit or completely controlled device in four thyristors. this device called as controlled commutation convertor because of the any device control is much these device both time i.e. entrance time and for blocking their conduction is achieved only at well defined point in time. In adjustable speed drive and position control application for four quadrant DC motor are mostly used. The speed of base speed of DC motor can be controlled their speeds will be decrease by armature voltage control. The base speed of DC motor can be increase by field flux control. As speed control of AC motor is not a good because of are simper and less costly. For DC motor of speed control method. the use of DC motor where more speed range control will be required. DC chopper also ISO 9001:2008 Certified Journal
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