scholarly journals Analysis of Power Converter Losses in Vector Control System of a Self–Excited Induction Generator

2014 ◽  
Vol 65 (2) ◽  
pp. 65-74 ◽  
Author(s):  
Mateo Bašić ◽  
Dinko Vukadinović ◽  
Miljenko Polić
Keyword(s):  
Control System ◽  
Vector Control ◽  
Estimation Algorithm ◽  
Load Resistance ◽  
Power Converter ◽  
Induction Generator ◽  
Rotor Speed ◽  
Iron Losses ◽  
Three Phase ◽  
Vector Control System

Abstract This paper provides analysis of losses in the hysteresis-driven three-phase power converter with IGBTs and free-wheeling diodes. The converter under consideration is part of the self-excited induction generator (SEIG) vector control system. For the analysis, the SEIG vector control system is used in which the induction generator iron losses are taken into account. The power converter losses are determined by using a suitable loss estimation algorithm reported in literature. The chosen algorithm allows the power converter losses to be determined both by type (switching/conduction losses) and by converter component (IGBT/diode losses). The overall power converter losses are determined over wide ranges of rotor speed, dc-link voltage and load resistance, and subsequently used for offline correction of the overall control system’s losses (efficiency) obtained through control system simulations with an ideal power converter. The control system’s efficiency values obtained after the correction are compared with the measured values.

Studies on Implementations and Designs of DSP in the Six-Phase Induction Motor Vector Control System

2011 ◽  
Vol 268-270 ◽  
pp. 1681-1686
Author(s):  
Chao Yong Tuo
Keyword(s):  
Control System ◽  
Vector Control ◽  
Digital Signal Processor ◽  
Induction Motors ◽  
Digital Signal ◽  
Voltage Level ◽  
The Core ◽  
Three Phase ◽  
Vector Control System ◽  
Lower Voltage

Compared with traditional three-phase motors, six-phase induction motors due to their high reliabilities and low DC side voltages can achieve high power drives using devices with lower voltage level. In this paper, it analyzes the research status of six-phase induction motors, introduces the winding structures of six-phase induction motors, and finally designs the vector control system for six-phase induction motors taking the Digital Signal Processor (DSP) as the core. It introduces DSP circuit implementations, emphasizes to describe software structures of the control system, and proposes a detailed software flow chart.

Study on Decoupling Scheme of Three-Phase Synchronous Motor Vector Control System

2014 ◽  
Vol 685 ◽  
pp. 373-377
Author(s):  
Feng Long Shen ◽  
Ke Long Yu ◽  
Wang Yang Yu ◽  
Chong Ze Jiao
Keyword(s):  
Control System ◽  
Vector Control ◽  
Asynchronous Motor ◽  
Decoupling Method ◽  
Three Phase ◽  
Control Scheme ◽  
Vector Control System ◽  
The Comparative Study ◽  
The Mathematical Model ◽  
Fast Dynamic

In this paper, firstly,the mathematical model of three-phase asynchronous motor based on vector control system is introduced. Then,the question of coupling of flux, torque and current regulator is analyzed. The comparative study of feedback decoupling, feed-forward decoupling and cross coupling are developed qualitatively and quantitatively. According to this, the deviation decoupling method is proposed to realize the complete decoupling of current regulator. The simulation and experimental results show that, combined with the deviation decoupling and vector control, the decoupling of torque and flux linkage can be implemented completely, while the voltage coupling of current regulator can be eliminated. The results show that the proposed control scheme is feasible and has a fast dynamic respond.

Speed Sensorless Vector Control System of Induction Motor

2012 ◽  
Vol 516-517 ◽  
pp. 1664-1667 ◽  
Author(s):  
Hong Yu Wang ◽  
Wen Long Cai ◽  
Cheng Wei Hou
Keyword(s):  
Control System ◽  
Vector Control ◽  
Induction Motor ◽  
Estimation Method ◽  
Identification System ◽  
Rotor Speed ◽  
Motor Speed ◽  
Speed Sensorless ◽  
Sensorless Vector Control ◽  
Vector Control System

This paper introduces a vector control system for speed sensorless induction motor drive, which we have recently developed. In the introduce vector control system, one induction motor’s rotor speed estimation method based on model reference adaptive identification theory is proposed. The induction motor speed identification system based on the proposed method can estimate the rotor speed of the induction motor. The speed sensorless vector control system based on proposed method in this paper was built with Simulink blocks in Matlab platform. The simulation results indicate that the proposed method could operate stably in whole range of speed with preferable identification precision of rotor speed.

scholarly journals The fuzzy logic controllers synthesis method in the vector control system of the wind turbine doubly-fed induction generator

2020 ◽  
Vol 166 ◽  
pp. 04006
Author(s):  
Andrey Uskov ◽  
Vadym Shchokin ◽  
Oleksii Mykhailenko ◽  
Oleksii Kryvenko
Keyword(s):  
Control System ◽  
Wind Turbine ◽  
Vector Control ◽  
Wind Turbines ◽  
Alternative Energy ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Inference System ◽  
Doubly Fed ◽  
Vector Control System

The article is devoted to the improvement of control systems for wind turbines by developing fuzzy controllers with higher transient characteristics and low computational costs of identification in comparison with the applied PI controllers. Based on the self-organization method, a fuzzy speed controller of the doubly-fed induction generator (DFIG) of a wind turbine was synthesized, which uses a zero-order Sugeno fuzzy inference system and is made in the form of a block-oriented Wiener model. This regulator is an element of the vector control system of the transistor converter on the rotor side. The results of simulation modeling of the fuzzy controller showed that it provides a lower transition time compared to the PI controller, by 53.59% during acceleration and by 79.76% during braking, and 23.81% less error speed deviations from the reference signal. Such indicators can minimize losses while maintaining the maximum output power point of the power plant. The implementation of the developed system on wind turbines contributes to increasing the efficiency of wind farms, reducing the cost of electricity production, reducing the payback period of equipment, and the sustainable development of alternative energy in general.

The Simulation Research and Modeling of Asynchronous Motor's Vector Control

2013 ◽  
Vol 336-338 ◽  
pp. 484-488 ◽  
Author(s):  
Yu Fang Gong ◽  
Yu Gong ◽  
Xin Ying Li
Keyword(s):  
Control System ◽  
Vector Control ◽  
Pulse Width Modulation ◽  
Asynchronous Motor ◽  
Simulation Research ◽  
Asynchronous Motors ◽  
Three Phase ◽  
Rotor Flux ◽  
Vector Control System ◽  
The Mathematical Model

Based on the analysis of the mathematical model of the three-phase asynchronous motor and sine pulse width modulation principle, According to the theory of asynchronous motors vector control , software is building simulation model of asynchronous motors vector control system according to the rotor flux in Matlab/Simulink, analysis dynamic characteristics of rotational speed, torque and stator current ,provided the simulation results of the control system, verify the vector control is effective and feasible.

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