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The paper presents the speed sensorless control of the induction motor in the system with the voltage inverter and LC filter. The LC filter is used to smooth the motor currents and voltages. In the control system the non-linear control method is used. For the state variables estimation the disturbance observer is implemented. Because of the voltage drop and phase shift caused by the LC filter the...
A fuzzy-immune PI speed regulator for vector control system of induction motor is designed, in which the proportion parameter is adjusted using the fuzzy-immune method and the integral parameter is adjusted using the algorithm of making the integrator desaturate in advance. The structure of the controller is simple comparatively, and it is convenient and effective to adjust its parameters. The simulation...
Medium voltage AC machines fed by high-power inverters operate at a low switching frequency to restrain the switching losses of power semiconductor devices. Particular care is thus required in the design of the drive control system. The signal delay caused by low switching frequency operation increases undesired cross-coupling effects in vector-controlled schemes. These are not sufficiently compensated...
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