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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...
To solve the problems of rotor flux field orientation loss and operation performance degradation caused by neglecting iron loss in the conventional vector control system, a new vector control strategy based on iron loss model of induction motor (IM) is proposed in this paper. In this strategy, a slip-type indirect field oriented vector control (IFOC) is designed by setting the magnetizing currents...
For a particular five-phase synchronous machine, this paper investigates the sensitivity of a vectorial control strategy on the required peak phase voltage whose value is fundamental for the choice of the DC bus voltage. The specificity of the machine is that the first and third harmonic components of the back electromotive force (back-emf) have the same amplitude. As a consequence, the torque can...
This paper proposes a novel hybrid position estimation strategy based on merging two self-sensing techniques according to the operating speed. High-frequency (HF) signal injection algorithm is deployed for zero and low-speeds, while the Machine Learning (ML) method is adopted for medium and high speeds. The proposed position estimator is intended for the fault-tolerant control of an interior permanent-magnet-synchronous...
In this paper, two approaches to speed estimation, presented in the literature, for a sensorless control of double star induction machine. We will discuss briefly the advantages, disadvantages, and limits of use of these techniques. We will then apply these two sensorless control techniques to the double star induction machine. The simulation results obtained showed that the speed sensorless vector...
The paper is a result of the authors' researches in the field of energy area. The objective is to develop a power grid converter which includes all fundamental drive systems being capable to regenerate the energy into the grid. The topology fits very well to the hybrid renewable power systems, in order to control the green energy. Three-types of the electrical drives were included: the dc drive, the...
Based on previous research experience proved by simulated and experimental results a comparative discussion about advantages and disadvantages of using Vector Control or Direct Torque Control for PM-SM drives is presented.
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...
Flux-switching permanent magnet machines (FSPM) show high-reliability and are quite suitable for the fields such as new energy, electric vehicle and aerospace. In this paper, the id=0 vector control strategy based on SVPWM was proposed. Besides, the high frequency signal injection method was used to identify the initial rotor position of FSPM. The experimental results proved the feasibility of the...
This paper presents a control strategy for squirrel cage induction generator (SCIG) based on commercial vehicle using engine-generator system. For this, the conventional slip- and vector control method using PSIM is used to illustrate the characteristics of the system. The simulation results show that the deviation of DC link voltage from its reference value during the mentioned transient conditions...
This paper presents a new slip compensation method for the traditional scalar control (V/f) of induction motors. Based on the level of q-axis component of stator current, the steady-state slip of motor speed is estimated by means of flux-oriented current tracking that is usually applied in vector control. The method features both the simplicity of scalar control and improvement on the performance...
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...
To broaden the speed range of PMSM (Permanent Magnet Synchronous Motor) for the electric vehicles and to improve the stability in the high speed and small torque operating conditions of the electric vehicles, the control strategy based on flux-weakening control algorithm, using voltage feedback method, combined with SMVSC (Sliding Mode Variable Structure Control) algorithm, using the improved exponential...
In this paper, a new approach for achieving speed control of induction motor and three phase inverter output balanced currents under unbalanced grid voltage condition are presented. The proposed method is based on vector control of induction motor by using field oriented control. In unbalanced grid voltage condition, negative sequence components appear on the grid voltage vector, leading to distorted...
The article deals with a detailed description of phase control provided for the synchronous motor with permanent magnets basing on the simultaneous regulation of the motor supply voltage amplitude and phase. The phase control method makes it possible to implement a variety of motor control strategies at the expense of voltage vector purposeful formation, for example, setting to the maximum efficiency...
In this paper, a model of Permanent Magnet Synchronous Motor (PMSM) using vector control algorithm is built and simulated by MATLAB/Simulink based on TMS320F28035 DSP chip. Firstly, the principle of vector control theory and the mathematical models are expounded clearly. Then, the simulation system model is established according to the method adopted by motor and the target board type, moreover, the...
With the third-harmonic component considered, the vector control strategy of five-phase permanent-magnet synchronous machine (PMSM) is investigated in this paper. The effect of the third-harmonic component of the air-gap flux density on the machine performance is investigated, and the implementation and applicable condition of the single-plane and dual-plane vector control methods are studied. By...
The article presents evaluation of indirect torque measurement accuracy of converter-fed induction motors. The low-power (5.5 kW) motor supplied by Siemens SINAMICS S120 frequency converters was used to perform the measurement. The converter was set up to vector control method, also the effects of speed sensor presence or absence were compared. The dynamometer test bench with gauge strain measurement...
Diagnosis for permanent magnet (PM) flux reduction is necessary for determining motor efficiency. This paper proposes a real-time diagnosis model without invading the motor structure. In this method, acoustic signals acquired with a sound intensity meter under different motor operation conditions are analyzed and processed by a wavelet packet. Moreover, the Grey-Markov Chain model is applied to estimate...
This paper discusses application of Multilevel Inverter (MLI) in closed loop control of induction motor. This topology of MLI is called Nested topology which helps in reducing harmonics thereby increasing & improving the level and quality of voltages respectively. Proposed topology increases efficiency of output by reducing the losses effectively. The work mainly focuses on Matlab simulation and...
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