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This study investigates the implementation of predictive current control for an interior permanent magnet synchronous motor (IPMSM) drive system. By measuring the current deviation of each switching interval, the optimal switching state of the inverter can be determined. As a result, the proposed method is insensitive to the variations of the motor parameters. In addition, a satisfactory tracking...
This paper proposes a new rotor position estimating method by detecting the stator currents under each PWM switching state for an interior permanent magnet synchronous motor drive system. The proposed sensorless drive system can be applied in an air conditioner without injecting any high-frequency sinusoidal or cosine voltage signal. The operating speed range can be effectively extended because the...
A chattering-free robust nonlinear controller is proposed for the speed control of an IPMSM drive system to compensate for the parameter uncertainties and load disturbances. First, the input-output feedback linearization technique is used with a load torque estimator. Next, the upper bounds of the uncertainties are defined in design of the chattering-free robust controller. After that, in order to...
This paper presents a novel high-performance sensorless IPMSM drive system and its application in washing machines. A new extended flux estimating method is developed here. Based on the extended flux estimating method, the rotor position and speed of an IPMSM can be obtained. Then, a closed-loop sensorless drive system has been implemented. The drive system starts from standstill and reaches 2000...
This paper proposes a novel high-performance rotor position estimator for an interior permanent magnet synchronous motor. By suitably processing the mathematical model of the motor, a systematic method of the rotor position estimating method has been developed. The proposed control system can be used in the space vector pulse-width-modulation switching method. By measuring the dc-bus voltage and the...
The paper proposes a novel extended flux estimating method for an interior permanent magnet synchronous motor. By using the proposed method, an extended flux can be systematically derived. Then, the shaft position and speed of the motor can be obtained. To achieve starting from a standstill and a low-speed range control, a current-slope estimating method is used to replace the extended flux method...
TMs paper proposes a novel advanced controller design for an interior permanent magnet synchronous motor position control system. First, the input-output linearization technique is used to transfer the system model into a linear system. Next, based on the linear system model, an Hinfin controller is designed to achieve robust performance of the position control system. A digital signal processor,...
This paper proposes a field weakening control algorithm with a nonlinear speed-loop controller for an interior permanent magnet synchronous motor. By using the proposed method, the adjustable speed range can be extended to 1.6 times that of the based speed. The method includes the constant torque region and the constant power region. In addition, an adaptive backstepping speed-loop controller is designed...
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