The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform
Zhang Neng - One of the best experts on this subject based on the ideXlab platform.
-
Study on the Vector Control System of Salient-pole Synchronous Motor Considering Magnetic Field Saturation Effect
IEEE Transactions on Power Electronics, 2011Co-Authors: Zhang NengAbstract:By using the closed-loop compound flux-linkage observer,the excellent results of air gap flux-linkage ob-server can be obtained.On this basis,the mathematical model of salient-pole synchronous considering magnetic field Saturation Effect is proposed.On the experiment platform of synchronous motor with DSP2812 as the core,the vector control experiment of synchronous motor is completed.The experimental results show that the proposed air-gap flux field oriented vector control system has high dynamic and static characteristics.Furthermore,by using the Saturation mathe-matical model established to analyse and control the synchronous motors while magnetic field is Saturation and nonlin-earity,the synchronous motor speed control system has high dynamic response.
Abdelmounaïm Tounzi - One of the best experts on this subject based on the ideXlab platform.
-
Vector control of autonomous induction generator taking Saturation Effect into account
Energy Conversion and Management, 2008Co-Authors: Kassa Idjdarene, Djamila Rekioua, Toufik Rekioua, Abdelmounaïm TounziAbstract:In this paper, we present the voltage build up process and the terminal voltage control of an isolated wind powered induction generator driven by a variable speed wind turbine using rotor flux oriented vector control. A description of the studied system is provided, and a simulation study is presented. The model used for the autonomous induction generator is a diphase one obtained by application of the Park transform. This model permits, when adopting some simplifying hypotheses, taking account the Saturation Effect. Wind powered isolated induction generators have an input, wind, that is not controllable, but they can be set to operate within a given variation of speed. Unlike a grid connected induction generator, in an isolated case, there should be a control system that keeps the DC bus voltage at a constant value when the speed of the rotor varies. The paper presents the control system to maintain the DC bus voltage at a constant value. The obtained results are presented and discussed.
-
Control strategies for an autonomous induction generator taking the Saturation Effect into account
2007 European Conference on Power Electronics and Applications, 2007Co-Authors: Kassa Idjdarene, Djamila Rekioua, Toufik Rekioua, Abdelmounaïm TounziAbstract:In this paper, we present the voltage built up process and a control to regulate the DC voltage of an isolated induction generator connected to a rectifier and driven by a variable speed wind turbine. Two strategies, based on the rotor flux oriented vector control, are proposed. Both rotor flux and DC bus voltage are regulated by two control loops which operate in parallel. The model used for the induction generator is obtained by the application of the Park transform. This model takes account of the Saturation Effect by a variable magnetizing inductance function of the current. The inductance variation is described by a polynomial function. The proposed control strategies are validated through simulations. The obtained results are presented and discussed.
Wu Xuan-qin - One of the best experts on this subject based on the ideXlab platform.
-
Electrically Excited Synchronous Motor Vector Control Considering Saturation Effect
IEEE Transactions on Power Electronics, 2010Co-Authors: Wu Xuan-qinAbstract:Voltage model flux linkage estimator which in electrically excited synchronous motor vector control system is strongly affected by the initial stator flux value,the measurement of voltage and current.So the current model is adoped in the flux linkage estimator to increase the accuracy of the voltage model.The magnetic circuit in the motor gets saturated easily when the load current increases and thus the traditional current model has an error in estimating stator flux linkage.Using d-axis Saturation factor,the stator flux linkage can be accurately depicted by the excitation current under saturated magnetic circuit.Experimental results of the synchronous motor vector control system verify the validity of hybrid voltage-current model flux linkage estimator and the Effectiveness of the controller which take the Saturation Effect into consideration.
Kassa Idjdarene - One of the best experts on this subject based on the ideXlab platform.
-
Vector control of autonomous induction generator taking Saturation Effect into account
Energy Conversion and Management, 2008Co-Authors: Kassa Idjdarene, Djamila Rekioua, Toufik Rekioua, Abdelmounaïm TounziAbstract:In this paper, we present the voltage build up process and the terminal voltage control of an isolated wind powered induction generator driven by a variable speed wind turbine using rotor flux oriented vector control. A description of the studied system is provided, and a simulation study is presented. The model used for the autonomous induction generator is a diphase one obtained by application of the Park transform. This model permits, when adopting some simplifying hypotheses, taking account the Saturation Effect. Wind powered isolated induction generators have an input, wind, that is not controllable, but they can be set to operate within a given variation of speed. Unlike a grid connected induction generator, in an isolated case, there should be a control system that keeps the DC bus voltage at a constant value when the speed of the rotor varies. The paper presents the control system to maintain the DC bus voltage at a constant value. The obtained results are presented and discussed.
-
Control strategies for an autonomous induction generator taking the Saturation Effect into account
2007 European Conference on Power Electronics and Applications, 2007Co-Authors: Kassa Idjdarene, Djamila Rekioua, Toufik Rekioua, Abdelmounaïm TounziAbstract:In this paper, we present the voltage built up process and a control to regulate the DC voltage of an isolated induction generator connected to a rectifier and driven by a variable speed wind turbine. Two strategies, based on the rotor flux oriented vector control, are proposed. Both rotor flux and DC bus voltage are regulated by two control loops which operate in parallel. The model used for the induction generator is obtained by the application of the Park transform. This model takes account of the Saturation Effect by a variable magnetizing inductance function of the current. The inductance variation is described by a polynomial function. The proposed control strategies are validated through simulations. The obtained results are presented and discussed.
Mehdi Karrari - One of the best experts on this subject based on the ideXlab platform.
-
Improving Synchronous Generator Parameters Estimation Using $d- q$ Axes Tests and Considering Saturation Effect
IEEE Transactions on Industrial Informatics, 2018Co-Authors: Behrooz Zaker, Gevork B. Gharehpetian, Mehdi KarrariAbstract:Fundamentals of parameter estimation of synchronous generator (SG) have already been presented in different standards such as IEEE Std. 115. The first proposed methods require short circuit tests and/or some tests for which the synchronous generator should be out of service. In recent reports, however, to avoid the shortcomings of former methods, partial load rejection tests on d-q axes have been recommended to estimate the electrical parameters of SG such as different reactances and time constants. In this paper, it is first shown that the standard well-known methods are valid when there is no Saturation Effect. Therefore, a new method is proposed to improve SG parameters estimation taking into account the Saturation Effect. The proposed method uses Saturation curve parameters, rotor angle, and analytical equations of the SG alongside the load rejection tests results. To show the accuracy and precision of the proposed method, it is applied to experimental data of an 80 MVA gas turbine unit, and the results are discussed.
