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This project “comparison analysis of ZETA PFC converter to improve power quality improvement by PI Controller, Hysteresis controller and Fuzzy logic controller for speed control of a Induction Motor”is composed of anisolated ZETA converter is proposed as a power factor correction (PFC) converter with DC link voltage control for speed control of a Induction Motor (IM).Induction motor has got the volatility of wide range of speed control.Power electronic converters canenvisage dynamic speed control. The front end rectifier and dc to dc converter can be monitored to facilitate requisiteinput voltage to the inverter fed drive working at constant speed. A single phase supply followed by an uncontrolledbridge rectifier and a Zeta DC-DC converter is used to control the voltage of a DC link capacitor which is lying between the Zeta converter and a Voltage Source Inverter (VSI). Speed control is achieved by maintaining constant dclink voltage. In this drive, speed is controlled by adjusting the DC link voltage of the VSI feeding induction motor.VSI operates in a low frequency switching mode for reduced switching losses. The voltage source inverter (VSI) is used as a stator supply of Induction Motor. The proposed converter performs the PFC action and DC link voltage control in single stage using only one controller. The current multiplier approach with average current control is used for operation of the isolated ZETA converter in continuous conduction mode (CCM). A rate limiter in the reference DC link voltage is designed for the control of current and torque in Induction Motor. The designed PFC converter results in an improved power quality at AC mains in a wide range of speed control and input AC voltage.

iosr journal of electrical and electronics engineering

Comparison Analysis of Zeta PFC Converter to Improve Power Quality Improvement by PI Controller, Hysteresis Controller and Fuzzy Logic Controller for Speed Control of Induction Motor