scholarly journals Simulation and physical modelling of synchronous electric drive for electric and hybrid vehicles

2021 ◽  
Vol 2061 (1) ◽  
pp. 012050
Author(s):  
A N Malyshev ◽  
A N Panarin ◽  
V V Debelov ◽  
M D Mizin
Keyword(s):  
Electric Drive ◽  
Direct Torque Control ◽  
Physical Modelling ◽  
Current Control ◽  
Torque Control ◽  
Drive Control ◽  
Current Inverter ◽  
Element Base ◽  
Theoretical Foundations ◽  
Frequency Current

Abstract The article presents the theoretical foundations of the device and the principle of control of a power electric drive. An overview of the main structural elements and the requirements for the electric drive are made. Power electric drive control systems using inverter converters are considered: frequency-current control based on a current inverter; frequency-current control based on a voltage inverter; direct torque control; vector field control. The main provisions of the use of simulation and physical modeling in the development of an electric drive are presented. On the basis of the previous analysis, the best solutions allowing modeling the electric drive have been selected. The choice of the element base has been substantiated and the development of a physical model has been carried out.

scholarly journals Optimization of torque ripples in direct torque control drives

2021 ◽  
pp. 41-53
Author(s):  
Andrey Kromm ◽  
◽  
Gennady Simakov ◽  
Valery Topovsky ◽  
◽  
...  
Keyword(s):  
Hybrid Method ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Hybrid Control ◽  
Direct Torque Control ◽  
Torque Control ◽  
Drive Control ◽  
Electrical Motors ◽  
Torque Ripples

The article discusses the features of the synthesis of a hybrid method for commutation of a three-phase inverter in a classic version of drives with direct torque control (DTC), which involves the use of relay characteristics in the flux- and torque control blocks. It is proved that the output voltage of a converter based on a B6-inverter formed by only six basic vectors (excluding the zero vector) limits further optimization of flux- and torque ripples in the electrical motors. It has also been proven that with the classical drives with direct torque control, the torque ripples on the motor shaft are indeed higher than in systems with pulse width modulation. An analysis of the method was carried out which could allow reducing the amplitude of the torque ripples when drives with direct torque control are applied for motors supplied with only basic vectors of the inverter due to the modified (hybrid) method of inverter commutation. The conditions under which the hybrid control method of the inverter is really capable of reducing the amplitude of the motor flux- and torque ripples are considered. Based on the analysis of the proposed solution, the law of hybrid control of the inverter is presented by means of the formation of additional vectors of its output voltage via basic vectors of the inverter. The advantages of the method include the simplicity of drive control under development or in the existing drive control system, the implementation of which is carried out exclusively by a software product. With the absence of iterative methods of mathematics, the resources of microprocessor control units are reduced, which makes this method even more attractive in low-budget electrical drives that do not claim to be "high-end" of control blocks. The oscillograms are shown of a flux and current of motor with direct torque control motor application only with six base vectors of the output voltage of a semiconductor inverter and a drive with direct torque control by the hybrid method with additional voltage vectors based on the basic vectors of the inverter.

scholarly journals Frequency-current system for relay vector control of non-synchronous electric drive in bridge crane travel mechanism

2015 ◽  
Vol 2015 (4) ◽  
pp. 91-99 ◽  
Author(s):  
Татьяна Сморудова ◽  
Tatyana Smorudova ◽  
Дмитрий Кочевинов ◽  
Dmitriy Kochevinov ◽  
Галина Федяева ◽  
...  
Keyword(s):  
Electric Drive ◽  
Current System ◽  
Frequency Control ◽  
Current Control ◽  
Transverse Displacement ◽  
Bridge Crane ◽  
System Parameters ◽  
High Degree ◽  
Speed And Accuracy ◽  
Frequency Current

This paper reports the variant for the advancement of the functional circuit and algorithms to control a bridge crane travels with the correction of misalignment and transverse displacement on basis of the use of new systems of a nonsynchronous electric drive with frequency control. It is offered to use a simple and reliable frequency – current with an autonomous inverter of current and a relayvector algorithm of control. A functional circuit of the system of frequen-cy-current control for the mechanism of a bridge crane travel with the correction of misalignment and transverse displacement. To analyze a crane position there are used differential values obtained by means of the indication difference in contactless sensors measuring a distance from the preset crane points to rails on the opposite supports. The procedure for the computation of control system parameters is stated. For the check of created functional circuits and algorithms of control there is used a complex electromechanical computer model of a bridge crane with a high degree of detailed elaboration (a virtual prototype of a bridge crane). The modeling results of are shown. The shown frequency – current system of control with the correction of misalignment and transverse displacement allows the decrease of threshold differential valuations and the increase of speed and accuracy of regulation

Based on Adaptive Fuzzy PI DTC of Double Wheeled Electric Vehicle Drive Control

2014 ◽  
Vol 953-954 ◽  
pp. 1359-1362 ◽  
Author(s):  
Ya Jun Han ◽  
De Yin Du ◽  
Bao Fan Chen
Keyword(s):  
Electric Vehicle ◽  
Dynamic Error ◽  
Direct Torque Control ◽  
Torque Control ◽  
System Stability ◽  
Differential Analysis ◽  
Tracking Accuracy ◽  
Drive Control ◽  
The Stability ◽  
Differential Control

In order to improve the stability of an electric vehicle on different road conditions, this paper puts forward a fuzzy PI direct torque control of an adaptive, through the electronic differential control, the parameters of two high torque motor is adjusted dynamically, so as to replace the traditional mechanical differential. Analysis for system stability, the simulation results show that, with Matlab/Simulink, in a different way, this method can obtain good steady-state tracking accuracy and small dynamic error integral.

scholarly journals Discrete Current Control Strategy of Permanent Magnet Synchronous Motors

2013 ◽  
Vol 2013 ◽  
pp. 1-9
Author(s):  
Yan Dong ◽  
Kai Jing ◽  
Hexu Sun ◽  
Yi Zheng
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Control Strategy ◽  
Direct Torque Control ◽  
Current Control ◽  
Torque Control ◽  
Rotating Magnetic Field ◽  
Permanent Magnet Synchronous Motors ◽  
Magnetomotive Force ◽  
Synchronous Motors

A control strategy of permanent magnet synchronous motors (PMSMs), which is different from the traditional vector control (VC) and direct torque control (DTC), is proposed. Firstly, the circular rotating magnetic field is analyzed on the simplified model and discredited into stepping magnetic field. The stepping magnetomotive force will drive the rotor to run as the stepping motor. Secondly, the stator current orientation is used to build the control model instead of rotor flux orientation. Then, the discrete current control strategy is set and adopted in positioning control. Three methods of the strategy are simulated in computer and tested on the experiment platform of PMSM. The control precision is also verified through the experiment.

scholarly journals Multi-carrier switching strategy for high-bandwidth potential balancing control of multilevel inverters

2021 ◽  
Vol 12 (4) ◽  
pp. 2384
Author(s):  
Zuraidi Md Tahir ◽  
Auzani Jidin ◽  
Mohd Luqman Mohd Jamil
Keyword(s):  
Electric Drive ◽  
Control Strategies ◽  
Short Circuit ◽  
Direct Torque Control ◽  
Neutral Point ◽  
Torque Control ◽  
Switching Frequency ◽  
Imbalance Problem ◽  
High Bandwidth ◽  
Balancing Control

<span lang="EN-US">This paper confers on investigation of a direct torque control (DTC) of induction motor drive by 3 level neutral point clamp (NPC) multilevel inverter. The imbalance problem may deteriorate the electric drive performances which might cause a short circuit condition. Various balancing control strategies were proposed, however, most of them employed complex space vector modulation (SVM) and hysteresis-based controller that generates variable switching frequencies. The proposed method will offer a reliable balancing control strategy with a constant switching frequency, and moreover, it will provide excellent electric drive performances. This research proposed a new multi carrier switching modulation strategy that establish a high-band-width control for neutral point potential in the NPC inverter. Potency of the proposed high-bandwidth potential balancing strategy is validated through the MATLAB/SIMULINK environment.</span>

scholarly journals A Novel Seamless Direct Torque Control for Electric Drive Vehicles

2011 ◽  
Vol 11 (4) ◽  
pp. 449-455 ◽  
Author(s):  
Ahmad Ghaderi ◽  
Takaji Umeno ◽  
Yasushi Amano ◽  
Sugai Masaru
Keyword(s):  
Electric Drive ◽  
Direct Torque Control ◽  
Torque Control

scholarly journals Simulation of Electric Drive With Direct Torque Control of Induction Motor

2018 ◽  
Vol 15 (1) ◽  
Author(s):  
Yuri M. Inkov ◽  
Andrey S. Kosmodaminskiy ◽  
Alexander A. Pugachev ◽  
Elena V. Sachkova
Keyword(s):  
Induction Motor ◽  
Electric Drive ◽  
Induction Motors ◽  
Direct Torque Control ◽  
Torque Control ◽  
Voltage Source ◽  
Voltage Source Inverters ◽  
Electric Drives ◽  
Traction Electric Drive ◽  
Traction Drives

The main requirements for traction electric drives are listed and discussed. The direct torque control of an induction motor electric drive is established by a survey of operation modes of traction electric drives to thoroughly satisfy the requirements for traction electric drive. The topologies and operation principles of two-and three-level voltage source inverters are presented. The advantages and shortcomings of three-level voltage source inverters to be applied on locomotive traction drives are highlighted in relation to the two-level ones. The recommendations of choice between different voltage source inverter topologies are given. The topology and principles of operation of direct torque control of induction motors with two- and three-level voltage source inverters are described. The simulation peculiarities of electric drives with direct torque control and two- and three-level inverters in Matlab are considered. The simulation results are presented. The techniques to reduce the torque oscillations are shown and implemented in Matlab Simulink.

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