Global journal 27

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www.iiece.org GJESR RESEARCH PAPER VOL. 1 [ISSUE 7] AUGUST, 2014

ISSN:- 2349–283X

Three-phase Voltage Source PWM Rectifier Control with Discrete 12 Pulse Generator 1Rajendra

Singh Department of Electrical Engineering, M.M.M. University of Technology Gorakhpur, U.P, India. Email: raja03ee4444@outlook.com

2Avinash

Maurya Department of Electrical Engineering, M.M.M. University of Technology Gorakhpur, U.P, India. Email: avinashideal007@gmail.com

ABSTRACT: In this paper, we present a simulation study of pulse width modulation rectifier control with discrete 12-pulse generator. It works as an AC / DC rectifier. It gives DC voltage and current. To improve the voltage and current quality, A PID Controller is used. It reduced the harmonics of the input and output quantities. A 12-pulse generator used a yyd transformer that suppresses fifth and seven harmonics of currents. For improving the results low pass filter is used. Power electronics switches as thyristor family, transistor family, diodes, VSR switches, etc. are used for improving the level of switching. But best result gives GTOs. A GTO is a fully controlled device. ACSR conductor is improved magnetizing current and flux characteristics. Transformer losses decrease at low frequency and increase in high frequency. Corona loss limit increase with diameter of conductor. It works continuous and discontinuous mode of operation. Power factor, efficiency, THD, etc. parameters is also improved. Index Terms—Three-phase Controlled Voltage Source, Boost Inductors, 3-lags Bridge, Capacitors, Scaling gain, Logic Gates, Discrete space vector PWM generator, Discrete time Integrator, lookup table. Keywords: PWM RECTIFIER, Controller performance, Load voltage and load current, Control signal. 1. INTRODUCTION The future scope of the SVPWM rectifier is varied and all-inclusive owing to the coherent usage of power in the rectification process, and the load voltage is constant. The Three-phase rectifier has six switches that are switched using space vector technique. In general, the operation of a converter explained in the input signals, output signals, and the switching method used to obtain the desired output. The switching method of the switches in the converter is obtained in accordance with the digital electronic method. When V_CC supply connects to the switch enable. Grounds show the off position of the switch. All types’ power devices used in the rectifier circuit. [1]- [5]. In a threeThree-phase rectifier, the input AC voltages are

defined and the output DC voltage is dependent on the input quantities as well as the switching pattern of the rectifier. The switching pattern for any converter expressed as a function that is a mathematical representation of the switching pattern, called an existing function. The repetition of the switching patterns to obtain the desired output in a converter results in an existing function having intermittent ON and OFF periods, as the on-state is assumed to be a value 1, the pulses of the existence function have unit magnitude. The operating modes of the boost rectifier are the same as that of a threeThree-phase voltage source inverter. It operates eight different switching modes as boost rectifier. As explained earlier the ON and OFF states are assigned the values 1 and 0, respectively. [5]- [9].

PWM RECTIFIER

Fig.1. Basic circuit of pulse with modulation rectifier

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