Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487773
H. Athab, P. Shadhu Khan
This paper proposes a simple low-cost modulating duty cycle analog controller to reduce line harmonics for high power factor boost rectifier. The proposed method eliminates the need for current sensing, and simultaneously offers the performance results comparable to those of continuous conduction mode (CCM) scheme. This scheme also maintains the simplicity comparable to that of discontinuous conduction (DCM). Only the output voltage and the rectified input voltage are monitored to vary the duty cycle of the boost switch within a line cycle so that the third-order harmonic, which is the lowest order harmonic (LOH) of the input current, is reduced. As a result, the total harmonic distortion (THD) of the line current as well as the input power factor is improved. The proposed method is developed for constant switching frequency boost rectifier. Simulation and experimental results are presented to verify the effectiveness of the proposed control method.
{"title":"A Simple Effective Duty Cycle Controller for High Power Factor Boost Rectifier","authors":"H. Athab, P. Shadhu Khan","doi":"10.1109/PEDS.2007.4487773","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487773","url":null,"abstract":"This paper proposes a simple low-cost modulating duty cycle analog controller to reduce line harmonics for high power factor boost rectifier. The proposed method eliminates the need for current sensing, and simultaneously offers the performance results comparable to those of continuous conduction mode (CCM) scheme. This scheme also maintains the simplicity comparable to that of discontinuous conduction (DCM). Only the output voltage and the rectified input voltage are monitored to vary the duty cycle of the boost switch within a line cycle so that the third-order harmonic, which is the lowest order harmonic (LOH) of the input current, is reduced. As a result, the total harmonic distortion (THD) of the line current as well as the input power factor is improved. The proposed method is developed for constant switching frequency boost rectifier. Simulation and experimental results are presented to verify the effectiveness of the proposed control method.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133711156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487876
S. Wangsathitwong, S. Sirisumrannukul, S. Chatratana, W. Deleroi
This paper presents a control technique to reduce the effect of unbalanced voltages in the doubly fed induction generator (DFIG) in wind energy conversion systems. The unbalanced voltages cause negative effects to the DFIG such as torque pulsation and increased stator current. Based on the symmetrical component theory, the negative sequence of the stator voltage can be extracted from the three-phase stator voltage and fed to compensate the rotor voltage to reduce the unbalanced effect. The magnitude of the compensating negative sequence is calculated from the negative sequence of the stator voltage and rotor speed. The proposed method shows a promising result for reduction of torque and reactive power pulsations.
{"title":"Symmetrical Components-Based Control Technique of Doubly Fed Induction Generators under Unbalanced Voltages for Reduction of Torque and Reactive Power Pulsations","authors":"S. Wangsathitwong, S. Sirisumrannukul, S. Chatratana, W. Deleroi","doi":"10.1109/PEDS.2007.4487876","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487876","url":null,"abstract":"This paper presents a control technique to reduce the effect of unbalanced voltages in the doubly fed induction generator (DFIG) in wind energy conversion systems. The unbalanced voltages cause negative effects to the DFIG such as torque pulsation and increased stator current. Based on the symmetrical component theory, the negative sequence of the stator voltage can be extracted from the three-phase stator voltage and fed to compensate the rotor voltage to reduce the unbalanced effect. The magnitude of the compensating negative sequence is calculated from the negative sequence of the stator voltage and rotor speed. The proposed method shows a promising result for reduction of torque and reactive power pulsations.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132105510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487932
M. T. Bina, S. Rahimzadeh
Modeling of STATCOM is conventionally performed in the time-domain. Amongst them, dq-theory is well-known in which state-space equations are used for the analysis. Power systems, however, use the frequency-domain information in phasor-related studies such as load flow analysis. Because time-domain models of FACTS controllers cannot be directly applied to the power system analysis, an intelligent model can usefully bridge the time-domain information to the corresponding frequency-domain data. This paper proposes two neural network identifiers based on the existing time-domain average model of STATCOM. Extended resultant bridge presents an average-neural model of STATCOM, which can be analytically applied to power systems. To this extent, design and development of two neural network identifiers are performed using the dynamic neural network (DNN) and the multi-layer perceptron (MLP). To verify the developed models, the exact solutions obtained from the average model of STATCOM are compared with the outcomes of the DNN and the MLP identifiers. Moreover performance of the two identifiers is accordingly compared as well.
{"title":"Neural Identification of Average Model of STATCOM using DNN and MLP","authors":"M. T. Bina, S. Rahimzadeh","doi":"10.1109/PEDS.2007.4487932","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487932","url":null,"abstract":"Modeling of STATCOM is conventionally performed in the time-domain. Amongst them, dq-theory is well-known in which state-space equations are used for the analysis. Power systems, however, use the frequency-domain information in phasor-related studies such as load flow analysis. Because time-domain models of FACTS controllers cannot be directly applied to the power system analysis, an intelligent model can usefully bridge the time-domain information to the corresponding frequency-domain data. This paper proposes two neural network identifiers based on the existing time-domain average model of STATCOM. Extended resultant bridge presents an average-neural model of STATCOM, which can be analytically applied to power systems. To this extent, design and development of two neural network identifiers are performed using the dynamic neural network (DNN) and the multi-layer perceptron (MLP). To verify the developed models, the exact solutions obtained from the average model of STATCOM are compared with the outcomes of the DNN and the MLP identifiers. Moreover performance of the two identifiers is accordingly compared as well.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134360359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487905
S.W. Lee, H. Dehbonei, S. Ko, S.R. Lee, B. Jang, Y. Moon, T. Ko
This paper presents an improved parallel processing uninterruptible power supply (UPS) for a strong grid using a bi-directional voltage-controlled voltage source inverter (VCVSI). To maintain the load voltage at the desired value and to control the active power flow between the VCVSI and grid, the amplitude and phase angle of the inverter output voltage (power angle) must be controlled. Selecting the power angle operating range is an important factor which has a direct effect on various parameters, such as the size of a decoupling inductor, grid power factor and the power ratings of VCVSI components. It is shown how the optimum power angles can be chosen and by restricting the operation of this, the power factor can be maintained above 0.9 at different loads and operating conditions. The paper examines the steady state modeling and analysis of a single phase parallel processing UPS while maintaining a high system power factor under different conditions. Experimental and simulation results of a prototyped 1 KVA VCVSI confirms the validity of the proposed method.
提出了一种基于双向压控电压源逆变器(VCVSI)的强电网并联处理不间断电源(UPS)。为了使负载电压保持在理想值，并控制VCVSI与电网之间的有功潮流，必须控制逆变器输出电压的幅值和相位角(功率角)。功率角工作范围的选择是一个重要的因素，它直接影响到去耦电感的尺寸、电网功率因数和VCVSI元件的额定功率等参数。演示了如何选择最佳功率角，并通过限制其运行，可以在不同负载和运行条件下将功率因数保持在0.9以上。本文研究了在不同条件下保持高系统功率因数的单相并联处理UPS的稳态建模和分析。1 KVA VCVSI样机的实验和仿真结果验证了该方法的有效性。
{"title":"An Improved Parallel Processing UPS Using a Voltage-Controlled Voltage Source Inverter","authors":"S.W. Lee, H. Dehbonei, S. Ko, S.R. Lee, B. Jang, Y. Moon, T. Ko","doi":"10.1109/PEDS.2007.4487905","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487905","url":null,"abstract":"This paper presents an improved parallel processing uninterruptible power supply (UPS) for a strong grid using a bi-directional voltage-controlled voltage source inverter (VCVSI). To maintain the load voltage at the desired value and to control the active power flow between the VCVSI and grid, the amplitude and phase angle of the inverter output voltage (power angle) must be controlled. Selecting the power angle operating range is an important factor which has a direct effect on various parameters, such as the size of a decoupling inductor, grid power factor and the power ratings of VCVSI components. It is shown how the optimum power angles can be chosen and by restricting the operation of this, the power factor can be maintained above 0.9 at different loads and operating conditions. The paper examines the steady state modeling and analysis of a single phase parallel processing UPS while maintaining a high system power factor under different conditions. Experimental and simulation results of a prototyped 1 KVA VCVSI confirms the validity of the proposed method.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134466969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487870
J. Nishimura, K. Oka, K. Matsuse
A purpose of this paper is to present the speed- sensorless vector method of parallel-connected dual induction motors fed by one inverter. This system may be unstable when the ratings of each induction motor are different and an extremely unbalanced load for both motors is added. Then we suggest a control method that the system can be stable in this condition. According to this method, the rotor flux is directly controlled to be constant by a rotor flux feedback control though it isn't controlled in an ordinary system.
{"title":"A Method of Speed Sensorless Vector Control Parallel -Connected Dual Induction Motors Fed by One Inverter in a Rotor Flux Feedback Control","authors":"J. Nishimura, K. Oka, K. Matsuse","doi":"10.1109/PEDS.2007.4487870","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487870","url":null,"abstract":"A purpose of this paper is to present the speed- sensorless vector method of parallel-connected dual induction motors fed by one inverter. This system may be unstable when the ratings of each induction motor are different and an extremely unbalanced load for both motors is added. Then we suggest a control method that the system can be stable in this condition. According to this method, the rotor flux is directly controlled to be constant by a rotor flux feedback control though it isn't controlled in an ordinary system.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122985868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487825
D. Schroder, H. Schuster, C. Westermaier
This paper investigates two different strategies to control nonlinear mechatronic systems. The first method is applicable for a plant with known linear part and unknown static nonlinearity. By an intelligent observer the nonlinear characteristic is identified, such that the result of the identification can be used to improve the performance of the controller. The second approach presented is non-identifier-based. Hence, no identification is necessary if the system possesses some structural attributes. A time-varying control law is employed, which reacts on the present behaviour of the error signal instantaneously. The appealing feature is that bounds for the control error can be fixed a priori.
{"title":"Mechatronic - Advanced Computational Intelligence","authors":"D. Schroder, H. Schuster, C. Westermaier","doi":"10.1109/PEDS.2007.4487825","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487825","url":null,"abstract":"This paper investigates two different strategies to control nonlinear mechatronic systems. The first method is applicable for a plant with known linear part and unknown static nonlinearity. By an intelligent observer the nonlinear characteristic is identified, such that the result of the identification can be used to improve the performance of the controller. The second approach presented is non-identifier-based. Hence, no identification is necessary if the system possesses some structural attributes. A time-varying control law is employed, which reacts on the present behaviour of the error signal instantaneously. The appealing feature is that bounds for the control error can be fixed a priori.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"524 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124491559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487694
Yuang-Shung Lee, Yi-Pin Ko, Chien-An Chi
The proposed quasi-resonant (QR) zero current switching (ZCS) switched-capacitor (SC) converter is a new type of bi-directional power flow control conversion scheme. They are able to provide the voltage conversion ratios from 2 versus 1/2 (double-mode/half-mode) to n versus 1/n (n-mode/1/n-mode) by adding a different number of switched-capacitors and power MOSFET switches with a small series connected resonant inductor for forward and reverse schemes. The low current stress and balance resonance current are the advantage of the proposed quasi resonant switched-capacitor converter. The principle of operation, theoretical analysis of the proposed bi-directional power conversion scheme is described in detail with circuit model analysis. Simulation and experimental results are carried out to verify the performance of the new type ZCS SC bi-directional QR converters.
{"title":"A Novel QR ZCS Switched-Capacitor Bidirectional Converter","authors":"Yuang-Shung Lee, Yi-Pin Ko, Chien-An Chi","doi":"10.1109/PEDS.2007.4487694","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487694","url":null,"abstract":"The proposed quasi-resonant (QR) zero current switching (ZCS) switched-capacitor (SC) converter is a new type of bi-directional power flow control conversion scheme. They are able to provide the voltage conversion ratios from 2 versus 1/2 (double-mode/half-mode) to n versus 1/n (n-mode/1/n-mode) by adding a different number of switched-capacitors and power MOSFET switches with a small series connected resonant inductor for forward and reverse schemes. The low current stress and balance resonance current are the advantage of the proposed quasi resonant switched-capacitor converter. The principle of operation, theoretical analysis of the proposed bi-directional power conversion scheme is described in detail with circuit model analysis. Simulation and experimental results are carried out to verify the performance of the new type ZCS SC bi-directional QR converters.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131656652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487743
N. Yongyuth, P. Viriya, K. Matsuse
This paper presents a detailed analysis of circuit operation under ZVS and NON-ZVS switching conditions in a high-frequency full-bridge inverter for induction heating, using the principle of asymmetrical phase-shift control over a wide control range both in positive and negative directions. A variety of modes of circuit operation with the voltage and current equations during phase-shift power control under the operating conditions of ZVS and NON-ZVS are analyzed as a first step and the output voltage and current waveforms are obtained by MATLAB program. These waveforms will be analyzed by Fourier analysis which can lead further to the calculation of ac output power Po, dc input power Pd, and hence the conversion efficiency Tj of the full-bridge inverter. The analysis results shows that the control ranges of ac output power Po and dc input power Pd are limited by the occurrence of NON-ZVS operating condition, which changes according to the switching frequency fs .
{"title":"Analysis of a Full-Bridge Inverter for Induction Heating Using Asymmetrical Phase-Shift Control under ZVS and NON-ZVS Operation","authors":"N. Yongyuth, P. Viriya, K. Matsuse","doi":"10.1109/PEDS.2007.4487743","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487743","url":null,"abstract":"This paper presents a detailed analysis of circuit operation under ZVS and NON-ZVS switching conditions in a high-frequency full-bridge inverter for induction heating, using the principle of asymmetrical phase-shift control over a wide control range both in positive and negative directions. A variety of modes of circuit operation with the voltage and current equations during phase-shift power control under the operating conditions of ZVS and NON-ZVS are analyzed as a first step and the output voltage and current waveforms are obtained by MATLAB program. These waveforms will be analyzed by Fourier analysis which can lead further to the calculation of ac output power Po, dc input power Pd, and hence the conversion efficiency Tj of the full-bridge inverter. The analysis results shows that the control ranges of ac output power Po and dc input power Pd are limited by the occurrence of NON-ZVS operating condition, which changes according to the switching frequency fs .","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131839130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487758
T. Manmek, C. Mudannayake
This paper presents the application of the proposed efficient least squares algorithm in power supply voltage dip and unbalance detection for mitigation using a D-STATCOM. The proposed method is capable of identifying the instantaneous symmetrical components of the fundamental frequency accurately even though the point of common coupling voltage is strongly corrupted by the voltage harmonics. Also, it fulfils the specific requirements of the fast transient response, accuracy and robustness in order to ensure the satisfactory performance of the mitigation system. The proposed method extracts detecting the positive- and negative-sequence components and then using those sequence components for generating reference values of current that need to be injected into the point of connection D-STATCOM in order to compensate the voltage errors. Furthermore, the suitability of the proposed method in balanced/unbalance voltage dip compensation is verified by a experimental studies.
{"title":"Real-Time Implementation of Voltage Dip Mitigation using D-STATCOM with Fast Extraction of Instantaneous Symmetrical Components","authors":"T. Manmek, C. Mudannayake","doi":"10.1109/PEDS.2007.4487758","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487758","url":null,"abstract":"This paper presents the application of the proposed efficient least squares algorithm in power supply voltage dip and unbalance detection for mitigation using a D-STATCOM. The proposed method is capable of identifying the instantaneous symmetrical components of the fundamental frequency accurately even though the point of common coupling voltage is strongly corrupted by the voltage harmonics. Also, it fulfils the specific requirements of the fast transient response, accuracy and robustness in order to ensure the satisfactory performance of the mitigation system. The proposed method extracts detecting the positive- and negative-sequence components and then using those sequence components for generating reference values of current that need to be injected into the point of connection D-STATCOM in order to compensate the voltage errors. Furthermore, the suitability of the proposed method in balanced/unbalance voltage dip compensation is verified by a experimental studies.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133285044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-11-01DOI: 10.1109/PEDS.2007.4487750
T. Zoller, T. Leibfried, A. Miri
Torsional vibrations occur in mechanical shafts whenever they couple rotating masses. Especially shaft assemblies with large inertias and long shafts, e.g. in turbo- generating sets of power plants or in drives, these oscillations can be a major problem due to the weak natural damping and the sharp resonance points of these systems. It is impossible to obtain a desirable damping of these torsional vibrations by means of a mechanical method. However, by using a power electronics converter and an inductive or capacitive energy storage, an electrical method can be used to implement an active damping. The following paper illustrates the needed configuration and the necessary controls of the required converters for damping torsional vibrations.
{"title":"Application of Power Electronics for Damping of Torsional Vibrations","authors":"T. Zoller, T. Leibfried, A. Miri","doi":"10.1109/PEDS.2007.4487750","DOIUrl":"https://doi.org/10.1109/PEDS.2007.4487750","url":null,"abstract":"Torsional vibrations occur in mechanical shafts whenever they couple rotating masses. Especially shaft assemblies with large inertias and long shafts, e.g. in turbo- generating sets of power plants or in drives, these oscillations can be a major problem due to the weak natural damping and the sharp resonance points of these systems. It is impossible to obtain a desirable damping of these torsional vibrations by means of a mechanical method. However, by using a power electronics converter and an inductive or capacitive energy storage, an electrical method can be used to implement an active damping. The following paper illustrates the needed configuration and the necessary controls of the required converters for damping torsional vibrations.","PeriodicalId":166704,"journal":{"name":"2007 7th International Conference on Power Electronics and Drive Systems","volume":"547 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133465312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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