Sliding mode control of SVPWM inverters double star asynchronous machine drive

摘要

The control of double star asynchronous machine (DSAM ) has a double objective; better control of torque and minimization of the non sequential currents amplitude. A variable structure control type appear to answer to these two criteria thanks to the combination of the advantages of the space vector PWM control and the sliding mode control. Therefore, the goal of the SVPWM control is to synthesize the (/spl alpha//spl beta/) voltage vectors to satisfy the machine's torque control requirements, and, at the same time, to maintain the average volt-seconds on the (xy) plane to be zero during every sampling interval by combining the signs of the sliding surfaces and the position /spl theta/ of the reference frame.