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The output torque of outer motor and inner motor is affected by each other in Unified Field Dual Mechanical Port Electric Machine (UFDMPM), because of its electromagnetic coupling characteristic. A new control strategy is proposed to control the UFDMPM, by which the inner motor and outer motor can be separately controlled, in spite of existing electromagnetic coupling between them. In the end, the...
There are severe jerks while vehicle starts up sharply or accelerator steps, especially in AMT shifting. In order to guarantee ideal dynamic performance of torque response and ride comfort of vehicles, an optimal process control law of torque is proposed in this paper. The results of simulation and experiments demonstrate that the torque control law makes the shock intensity less and improves the...
With the demands of the propulsion systems, medium voltage high power AC drives are required. In high power AC drives, the switch frequency of the devices has to be limited in order to reduce the loss of the power semiconductor devices, torque ripple and electromagnetic interference. In this paper, a proposed drive control system with selective harmonic elimination PWM (SHEPWM) for induction motor...
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...
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