Improved Indirect Rotor Flux Oriented Control of PWM Inverter Fed Induction Motor Drives

In today's high-power electrical drives using vector controlled induction machines, voltage source inverters (VSI) based on PWM technology and current source inverters (CSI) based on based on PWM technology are the most important alternatives for motor supply (cyclo- converters being confined to very low speed applications). In this paper an Induction motor modeled in the rotor flux reference frame, the rotor flux orientation is obtained, a high performance current fed Indirect Rotor Flux Oriented Controller also proposed and a comparative performance analysis of the VSI & CSI drive topologies in Flux-Feed forward Vector Control (Indirect Vector Control) is also presented. To verify the design of controllers and system performance, the drive system simulation is carried out using MATLAB/Simulink. The steady state and dynamic performance of the drive system for different operating conditions are studied. The simulation results are provided to demonstrate the effectiveness of the proposed drive system.

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