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In order to solve such problem as sensitivity to the load torque variations of PI speed controller for interior permanent magnet synchronous machine (IPMSM), and to reduce the overshoot of system speed, a sliding mode controller (SMC) for IPMSM speed control system is proposed in this paper. And the chattering problem of SMC is eliminated by applying the variable exponential reaching law and saturation...
In this paper, the transfer function of PMSM drives system with feed forward complete decoupling is developed based on the small signal model. According to the transfer function, the stable operation range of system and PI parameter of flux weakening control are analyzed by Routh Stability Criterion. According to the analysis results, the stable operation range of system is to reduce with the speed...
This paper proposes the digital charge control method to boost converter operating with a type of nonlinear load, the constant power load. The constant power load is modeled theoretically, and model parameters are given in detail. Transfer functions of the boost converter with constant power load are deduced, and a small-signal model of the charge controlled current inner loop is presented. The digital...
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