IJSRST173845 | Received : 08 Nov 2017 | Accepted : 20 Nov 2017 | November-December-2017 [(3)8: 230-234] © 2017 IJSRST | Volume 3 | Issue 8 | Print ISSN: 2395-6011 | Online ISSN: 2395-602X Themed Section: Science and Technology 230 A Novel Zeta Converter with Pi Controller for Power Factor Correction in Induction Motor S. Arunraj * , S. Murugesan, T. Uma Nandhini, K. Keerthana Electrical and Electronics Engineering, K. Ramakrishnan College of Technology, Trichy, Tamilnadu, India ABSTRACT This study deals with a reduced sensor configuration of a power factor correction (PFC) based zeta converter for induction motor for low power applications. The speed of the Induction motor is controlled by varying the dc-link voltage of the voltage source inverter (VSI) feeding induction motor drive. A low-frequency switching of the VSI is used for achieving the electronic commutation of induction motor for reduced switching losses. The PFC-based zeta converter is designed to operate in discontinuous inductor current mode; thus utilizing a voltage follower approach which requires a single voltage sensor for dc-link voltage control and PFC operation. The proposed drive is designed to operate over a wide range of speed control with improved power quality at ac mains and the results are verified through numeric simulation using MAT Lab Simulink. Keywords: Zeta converter, Cuk converter, voltage source inverter, power factor correction. I. INTRODUCTION Power electronics devices contribute with an important part of harmonics in all kind of application, such as power rectifiers, thyristor converters, and 3ϕ inverter. Even update PWM techniques used to control modern static converters such as machine drives, power factor compensators or active power filters do not produce perfect waveforms, which strongly depend on the semiconductors switching frequency. Voltage or current converters, as they generate discrete output waveforms, force the use of machine with special isolation and in some applications large inductance connected in series with the respective load in other words neither the voltage nor the current waveforms are as expected. It is well known that distorted voltages and current waveforms produce harmonic contamination, additional power losses and high frequency noise that can affect not only the power load but also the associated controllers. 3ϕ Induction is an asynchronous and self- starting motor and significantly improving the quality of the output voltage waveforms .They have a large torque to inertia ratio, high power density, high efficiency and better controllability[4]. Of this motor, preferred choice is the Induction motor for industries like Automotive, Aerospace, Consumer, Medical, Industrial Automation equipment and Instrumentation, because of its high torque, high efficiency, simplicity of control, and less maintenance. Zeta converter designed to operate on IM for Improve the PFC [2] Low frequency signals used for trigger the switches. Single sensor used for monitor the speed of the Induction motor. A single voltage sensor is used at the front-end converter for the control of dc link voltage for speed control of induction motor. The proposed drive is designed to operate over a wide range of speed control with improved power quality at ac mains. Use of a high switching frequency results in a instantaneous control of DC link voltage and effective PFC action along with additional advantage of reduced size transformer and filters. The switching device, switching losses and operating power level are major factors that decide optimum switching frequency. A metal oxide field effect transistor (MOSFET) is used as the switching device for the proposed PFC converter. II. BLDC EMPLOYED WITH CUCK CONVERTER CUK PFC converter used widely for feeding BLDC motor for improving power factor correction technique PWM is used for give the pulse to the switches.[1] DC link voltage is varied in the VSI side. Switches are