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This paper describes an energy management strategy for an electric vehicle (EV). The proposed EV architecture contains a pack of the batteries which presents the energy source and a pack of the supercapacitors (SC) used as power source. The pack of the batteries produces the necessary energy to move forward the vehicle while the pack of the SC produces the lacking power in acceleration and in braking...
Present paper deals with speed controller design for vector control of permanent magnet synchronous motor (PMSM). Hysteresis current controller based vector control of PMSM has been simulated in MATLAB/Simulink environment. The speed controller of PMSM has been designed analytically and using MATLAB single input-single output (SISO) tool and MATLAB/Simulink PI controller tuner. The performance of...
Voltage phase control is a novel field-weakening scheme for PMSM which was reported as more stable in high speed region. This paper provides a current ripple reduce method and a frequency-compensation method. The current ripple reduce method deals with the problem that the voltage phase control has bigger current ripple compared to the tradition method. The frequency-compensation method decreases...
This paper proposes a capacitor-less inverter for AC motor driving system. The proposed converter consists of a single-phase diode rectifier, a small film capacitor at the DC bus, a three-phase voltage-source inverter, and a permanent magnet synchronous motor (PMSM). Since the DC bus capacitor is quite small, the input current of the AC source will be affected directly by the three-phase inverter...
Permanent Magnet Synchronous Motor (PMSM) as the key component of the Electric Vehicles (EVs), has numerous advantages over other synchronous motors. Fault diagnosis is essential to guarantee the safety and continuity of the operation for EVs. An undetected fault in the PMS M system may lead to high repair cost, or even catastrophic failure. Among lots of faults in the PMSM, the most serious are short...
A novel four quadrant operation control strategy of permanent magnet synchronous motor (PMSM) drive systems is proposed. In order to regulate precisely output direct current (DC) bus voltage and achieve the control of unity power factor, the exponential functional-based sliding mode reaching law (ESMRL), which adapts to the variations of the grid-side inverter and sliding mode surfaces, is developed...
This paper deals with the sensorless direct torque control (DTC) scheme for the permanent magnet synchronous motor (PMSM), where a new estimation algorithm is developed based on the polynomial chaos theory and the extended Kalman filter (EKF) for the sensorless obtaining of the rotor speed, stator flux and electromagnetic torque. The proposed estimator can effectively deal with parametric uncertainties...
This paper presents the design of Unscented Kalman Filter (UKF) for estimation of state space variables of permanent magnet synchronous machine (PMSM). The UKF is shown together with the field oriented speed control. At first, the position and the speed of PMSM are measured, and UKF is used only for a load torque estimation. It is indicated how differences in sampling time of the speed and the current...
This paper presents the design and implementation of a current controlled Rotor Flux Oriented PMSM for automotive steer-by-wire applications. The development of a realistic torque feedback reference is carried out by monitoring the steering torque while driving a commercial vehicle. The paper shall discuss the torque dynamics of the PMSM drive with respect to position demands replicating a driver...
In this paper, a robust and an efficient tracking controller based on model reference adaptive system (MRAS) technique is performed for mobile robot in order to get the accurate trajectory tracking performance. The model reference adaptive system (MRAS) technique has been presented so as to achieve the estimated value of system's speed information. To estimate the rotor position and speed of the mobile...
In the proposed paper a state feedback controller is designed using Jacobian linearization of PMSM around an operating point which is adaptively refreshed using Non Linear Disturbance Observer (NLDO). This observer estimates load torque (which is considered as disturbance) using knowledge of speed and stator currents. The speed is normally measured using speed sensors like optical encoder. In this...
This paper is aimed at identifying the design parameters of a PM Assisted Synchronous Reluctance Motor (PMASyRM), by using cheaper magnets (for example hard ferrites) than those used for the equivalent stator of a Permanent Magnet Synchronous Motor (PMSM) taken as a reference. The rotor saliency is expected to be as high as possible so that its performance is comparable with the reference, while having...
In this paper an application of artificial neural controller for compensation of torque ripple in electrical drive with PMSM (Permanent Magnet Synchronous Motor) is presented. Due to cogging torque, electromagnetic torque ripple and also, current measurement error of the motor, are created a ripple of angular velocity, finally. This parasite phenomenon influence on the precision of control, especially...
In this paper, an optimal switching table for PMSM DTC system using zero voltage vector is proposed. Zero voltage vector decreases stator flux and torque very slowly, so it can be used to suppress torque ripple when the system is at steady-state. And when the system is at dynamic-state, non-zero voltage is used to get quicker response. As both 111 and 000 can be used to generate zero voltage vector,...
To enhance the control precision of permanent magnet synchronous motor (PMSM) under parameter variations and load torque disturbances, a minimal reduced-order load torque observer (MRLTO) based discrete-time sliding mode control (DSMC) scheme is presented. First, a DSMC controller is presented on the basis of the second-order discrete-time PMSM dynamics model to enhance the speed tracking response...
This paper presents a comparison between Field Oriented Control and Direct Torque Control methods of a Matrix Converter-fed (MC) Permanent Magnet Synchronous Motor (PMSM). MC is becoming widely used because of the unity power factor and the lack of energy storage element. FOC method calculates the duty of MC states with use of geometric relations between voltage and current vectors. DTC method, on...
The follow-up control system has the feature of input signal random changing. On the basis of motor driving technology, the system can follow the change of the input signal. Permanent Magnet Synchronous Motor (PMSM) has small output torque ripple feature. Thus it has broad application prospect in the follow-up control system. The vector control of PMSM has coupling feature, reducing the speed dynamic...
This paper presents sensorless control of Permanent Magnet Synchronous Motor (PMSM). In the sensorless control method, the stator current is measured to estimate the speed of the motor. When PMSM sensorless control is used in an electric vehicle, sometimes it causes another problem. When the motor is running in steady state and the motor is suddenly given a large load that has reverse torque direction,...
Adaptive fuzzy PID controllers, combining fuzzy controllers which are highly adaptable with conventional PID controllers which have no control error, have been used in vector control systems of permanent synchronous machines(PMSM). In this paper, an adaptive fuzzy PID controller of which membership functions are dramatically improved is designed and applied to a PMSM. Then, simulation in Simulink...
This paper investigates what effects different cogging torque reduction techniques, have on the cogging torque waveforms and air-gap flux density of surface mounted PMSMs with distributed windings and large number of slots per pole. Methods such as magnet step skew, stator teeth dummy slots and magnet pole shaping are the main scope of the paper, as they do not result in unwanted rotor unbalances...
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