Transient Performance of Cascaded Induction Motors Using UPQC

In this paper, the effect of Unified Power Quality Conditioner (UPQC) on transient performance of Common-Shaft Cascade Induction Motors (CSCIM) are performed and commonly used in deep well digging plant (i.e. oil wells). UPQC analyze these events include system starting, supply voltage sag and swells as well as plugging. Maintaining a power distribution bus voltage near sinusoidal at rated magnitude and frequency is known as power quality. The series converter used for protecting a sensitive load from sag, swell and the parallel converter for power factor correction, load balancing and regulation of bus voltage. The hybrid devices consist of two voltage source converters (VSCs) which are linked through a Direct Current (dc) bus. UPQC is implemented using controllers PI controller, for the purpose of Analyzing the Results. The open loop system and the closed loop system are simulated using Simulink and compared. The simulation results show that the UPQC has a great capability in order to enhance the transient performance . Keywords— Induction Motors, Voltage-Source Converter (VSC) , Unified Power Quality Conditioner.

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