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The rotor position is integrant information for vector control drive system of Permanent Magnet Synchronous Motor (PMSM). In this paper, the focus is on the rotor position of PMSM detecting by the resolver sensor. The outstanding features of this sensor are its robust structure and noise insensitivity. To extract speed from the output of resolver we need R/D demodulator circuit. A new Artificial Neural...
Field Oriented Control (FOC) Permanent Magnet Synchronous Motor (PMSM) is a commutator less servo drive which provides high controllability, greater efficiency, superior torque to inertia ratio and high power density. However, the performance of FOC-PMSM depends on the driver circuits, which requires expensive computing elements. Besides, an intelligent current regulator is desired for a highly precise...
In order to achieve sensorless control for permanent magnet synchronous motor (PMSM), an observer based on model reference adaptive system (MRAS) is designed to estimate the rotor speed according to the mathematic model. A speed sensorless vector control system is established and simulated with Simulink. Simulation results show that the MRAS-based control system, which is able to implement the speed...
Permanent magnet synchronous motor (PMSM) servo drive system has been widely used for industrial sewing machines. The conventional control method is PID, which has some disadvantages such as large overshoot, bad robustness. In this paper, a servo control of the industrial sewing machine system based on the active disturbance rejection control (ADRC) is proposed, which can arrange the transient process,...
Generally, because of the temperature rise, the ageing, the saturation, etc. the resistance value and inductance value of the machine windings and the magnetic flux will be changed. The control performance of the permanent magnetic synchronous motors (PMSM) can be influenced by the plant parameter variation and external disturbance. This paper presents a robust H∞ control for PMSM drivers. Firstly,...
Based on the analysis of compressor load behaviors, a new three-phase startup strategy for permanent magnet synchronous motor (PMSM) compressor is presented, which includes parking, open-loop startup and closed-loop operation. When the speed loop closes, an improved method of flux estimation for PMSM compressor sensorless control is proposed, which accomplishes parking, efficient speed estimation...
PM motor drive systems are widely used for industrial drives. However, PM motors basically produce the torque ripple due to the fluctuation of the magnetic field distribution. Dead time of the inverter, offset of sensors and current measurement errors lead to the torque ripple, too. The torque ripple leads vibration noises. In this paper, we proposed a torque ripple suppression method based on perfect...
A Robust Current-Loop Controller (RCLC) based on the theory of Sliding Model Control (SMC) for Permanent Magnet Synchronous Motors (PMSMs) is proposed in this paper. The Field Oriented Control (FOC) scheme for PMSMs drive is constructed to achieve the better performance. Meanwhile in order to damp the chattering brought by the basic principle of SMC, three ways are presented, which can ensure the...
The objective of this paper is to model and simulate a three-phase Voltage Source Pulse Width Modulation (PWM) Rectifier Based on Direct Current Control feeding an indirect vector controlled Induction Motor Drive (VCIM) and 3-Level SVM based PMSM Drive. Based on the mathematical model of PWM rectifier, the dual close loop engineering design with decoupled feed-forward control is applied in the three...
There are big ripples on current and flux linkage and electromagnet torque under traditional direct torque control (DTC) on motor drive system. To solve these problems, fuzzy controller is designed to instead traditional hysteretic comparator, and zero voltage vectors are used to further reduce ripples. Rotor speed is estimated online by extended Kalman filter (EKF) algorithm. Speed sensorless DTC...
This paper mainly reports the research work on the drive system of permanent magnet synchronous motor (PMSM) with the aim of its application in the micro-electric vehicle (Mi-EV). An adaptive inverse control approach was used a vector controlled PMSM drive control system with uncertainties and external disturbances (the work condition variation). The drive system adopts two closed loop structure including...
In this paper, a sliding mode control based on reaching law control (RLC) is proposed for permanent magnet synchronous motors (PMSM) drive system. The PMSM is a typical multi-variable nonlinear system with strong coupling. It is sensitive to load disturbances and changes of interior parameters, so conventional PID control can't meet the application requirements where high performance is required....
Mechanic position transducer will bring a lot of disadvantages in permanent magnet synchronous motor drive system. In this paper, a method to observer rotor position which is based on high frequency signal injection and stator flux observation is presented. The carrier signal is injected in the stator, and the rotor position error signal is extracted from the carrier current with saliency tracking...
The application of an extended Kalman filter (EKF) as nonlinear speed and position observer in PMSM drives has been a mature research project. However, one significant problem still unsolved is the weakly performance at low speed of PMSM drive system that yield to the best estimation performance on high speed range (>5 Hz). This paper proposes a novel method--adjustable DC bus voltage, for low...
The paper deals with the problem of robust speed control of electrical servodrives. A robust controller is developed using a nonlinear IP controller. The controller nonlinear characteristic is obtained due to fuzzy logic technique application. An original method of controller settings adjustment is presented. The use of this adjustment procedure ensures robust speed control against the variations...
In order to deal with the uncertainties of permanent magnet synchronous motor, the moment of inertia, viscous damping coefficient and load torque are online identified simultaneously based on recursive least-square (RLS) estimator, which is composed of RLS estimator and a torque observer. Then, a novel self-tuning PI controller is real-time designed according to the identified parameter based on pole...
This paper presents the development of high fidelity real-time model of a permanent magnet synchronous motor (PMSM) drive, to be used in hardware-in-the-loop (HIL) application. The PMSM model is based on a finite-element analysis (FEA) method and implemented on an FPGA chip. The motor inductances and flux maps are computed from the JMAG-RT finite element analysis software. A 3-phase IGBT inverter...
In the wind energy conversion system, the wind turbine captures the wind energy. Then the generator changes it to the electrical power. So the characteristic of the wind turbine is very important. For some laboratories that donpsilat have the practical wind turbine, it is very convenience to use the wind turbine simulator instead of the real wind turbine. The paper introduces the structure and characteristic...
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