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This paper presents a sliding mode controller for induction motor fed with three level neutral point clamped (NPC) voltage source inverter (VSI) using sine pulse width modulation (SPWM) method. The controller has two loops: In the inner loop, the rotor fl flux and the motor torque are controlled using sliding mode approach. In the outer loop, the rotor speed is adjusted by a PID controller. The simulation...
A simple, robust, high-torque control without a speed sensor, for driving an induction motor with high- and mid-voltage inverters, has been developed. The proposed method is characterized by the unique control of the slip angular frequency of the induction motor, and allows a stable start with high torque. The proposed control method was installed in an H-bridge cascaded inverter, and startup and...
In this paper, a technique of robust control for an induction motor is presented. This motor is fed by five-level inverter controlled by the triangulo-sinusoidal strategy with four bipolar carriers. The control algorithm uses robust regulators calculated by the Hinfin loop shaping approach associated with indirect field oriented control. The sliding mode observer is used to observe the rotor flux...
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