Pub Date : 2008-10-01DOI: 10.1109/ICPST.2008.4745342
A. Kavitha, G. Uma
DC-DC Converters have been reported as exhibiting a wide range of bifurcations and chaos under certain conditions [2]. This paper analyses the bifurcations in current controlled SEPIC and boost topologies operating in the continuous conduction mode by means of a discrete time model. Stroboscopic mapping is used to investigate possible bifurcation phenomena that periodic-1 orbits can undergo bifurcation in the SEPIC and boost converters when the reference current is taken as bifurcation parameter [8]. The characteristic multipliers locate the onset of the flip bifurcation [7]. Such a jump from stable operation to chaos has been verified by the computation of Lyapunov exponent. The periodic-1 orbit loses its stability via flip bifurcation and the resulting attractor is a periodic-2 orbit. This later bifurcates to chaos via border collision bifurcation. A computer simulation using MATLAB SIMULINK confirms the predicted bifurcations. It has been inferred that margin of system stability decreases with decrease in input voltage as well as increase in reference current and the load.
{"title":"Bifurcation Analysis of DC-DC Converters using Discrete Time Model","authors":"A. Kavitha, G. Uma","doi":"10.1109/ICPST.2008.4745342","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745342","url":null,"abstract":"DC-DC Converters have been reported as exhibiting a wide range of bifurcations and chaos under certain conditions [2]. This paper analyses the bifurcations in current controlled SEPIC and boost topologies operating in the continuous conduction mode by means of a discrete time model. Stroboscopic mapping is used to investigate possible bifurcation phenomena that periodic-1 orbits can undergo bifurcation in the SEPIC and boost converters when the reference current is taken as bifurcation parameter [8]. The characteristic multipliers locate the onset of the flip bifurcation [7]. Such a jump from stable operation to chaos has been verified by the computation of Lyapunov exponent. The periodic-1 orbit loses its stability via flip bifurcation and the resulting attractor is a periodic-2 orbit. This later bifurcates to chaos via border collision bifurcation. A computer simulation using MATLAB SIMULINK confirms the predicted bifurcations. It has been inferred that margin of system stability decreases with decrease in input voltage as well as increase in reference current and the load.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122403445","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745233
P. Thirumoorthi, N. Yadaiah
This paper presents a technique with instantaneous power theory in order to control APF under non-ideal mains voltage conditions. The quality of the electrical current becomes a major concern. Power electronic equipments draw non-sinusoidal currents from the utility, causing interference with adjacent sensitive loads and limit the utilization of the available electrical supply. In this paper a parallel active filter capable of reducing the total harmonic distortion in the supply for nonlinear loads is presented. The active filter used to compensate for the nonlinear load is a three-phase inverter. It is used to shape the line current to be in phase and of the same shape as the supply voltage. In this paper, the compensation techniques under unbalanced and distorted voltage conditions have been discussed. Performance of the proposed scheme has been found feasible and excellent under various non-ideal mains test conditions. Matlab/Simulink power system toolbox is used to simulate the proposed system. The simulation results are presented and discussed showing the effectiveness of the control algorithm.
{"title":"Switch Mode Active Power Filter to Minimize the Effect of Harmonics through Current Detection","authors":"P. Thirumoorthi, N. Yadaiah","doi":"10.1109/ICPST.2008.4745233","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745233","url":null,"abstract":"This paper presents a technique with instantaneous power theory in order to control APF under non-ideal mains voltage conditions. The quality of the electrical current becomes a major concern. Power electronic equipments draw non-sinusoidal currents from the utility, causing interference with adjacent sensitive loads and limit the utilization of the available electrical supply. In this paper a parallel active filter capable of reducing the total harmonic distortion in the supply for nonlinear loads is presented. The active filter used to compensate for the nonlinear load is a three-phase inverter. It is used to shape the line current to be in phase and of the same shape as the supply voltage. In this paper, the compensation techniques under unbalanced and distorted voltage conditions have been discussed. Performance of the proposed scheme has been found feasible and excellent under various non-ideal mains test conditions. Matlab/Simulink power system toolbox is used to simulate the proposed system. The simulation results are presented and discussed showing the effectiveness of the control algorithm.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128655126","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745152
K. Ramalingam, C. Indulkar
P-V and Q-V curves are commonly used to determine the steady-state voltage stability limit of a power system. In this paper, the method of determining the voltage stability boundaries for a power system with voltage sensitive loads using P-Q curves is presented. The proposed method has been tested on a sample system, and interesting results are presented for voltage sensitive loads from the P-Q curves.
{"title":"Determination of Steady State Voltage Stability limit using PQ curves for voltage sensitive loads","authors":"K. Ramalingam, C. Indulkar","doi":"10.1109/ICPST.2008.4745152","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745152","url":null,"abstract":"P-V and Q-V curves are commonly used to determine the steady-state voltage stability limit of a power system. In this paper, the method of determining the voltage stability boundaries for a power system with voltage sensitive loads using P-Q curves is presented. The proposed method has been tested on a sample system, and interesting results are presented for voltage sensitive loads from the P-Q curves.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115908127","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745201
B. Suthar, R. Balasubramanian
A new approach to ANN-based real time line outage contingency analysis for voltage security assessment in a power system has been proposed in this paper. In this approach a separate ANN has been trained for each of the vulnerable load buses in the system from the voltage stability point of view. The vulnerable load buses of the system are identified by modal analysis of the system reduced Jacobian (of Q-V coupling) matrix. The output obtained from each of these ANN's is the "distance to voltage collapse" in terms of the MVAR margin available at the specific vulnerable load bus corresponding to the current operating point (loading condition) of the system. The novel inputs proposed for these ANN's consist of the complex power contributions of each of the generators and other controllable reactive power sources provided in the system in meeting the load at the particular load bus at the current loading condition and the electrical distances between these sources and the load bus, in addition to the conventionally used inputs of reactive power margins at the sources and the complex power drawn by and the voltage magnitude at the particular load bus. These special inputs have been proposed essentially to take care of two types of evolving voltage instability processes in a system viz. the reactive power sources gradually exhausting their limits as well as the transmission system approaching its maximum power transfer capabilities.
{"title":"A New Approach to Real Time Line Outage Contingency Analysis for Voltage Secure Operation of Power Systems","authors":"B. Suthar, R. Balasubramanian","doi":"10.1109/ICPST.2008.4745201","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745201","url":null,"abstract":"A new approach to ANN-based real time line outage contingency analysis for voltage security assessment in a power system has been proposed in this paper. In this approach a separate ANN has been trained for each of the vulnerable load buses in the system from the voltage stability point of view. The vulnerable load buses of the system are identified by modal analysis of the system reduced Jacobian (of Q-V coupling) matrix. The output obtained from each of these ANN's is the \"distance to voltage collapse\" in terms of the MVAR margin available at the specific vulnerable load bus corresponding to the current operating point (loading condition) of the system. The novel inputs proposed for these ANN's consist of the complex power contributions of each of the generators and other controllable reactive power sources provided in the system in meeting the load at the particular load bus at the current loading condition and the electrical distances between these sources and the load bus, in addition to the conventionally used inputs of reactive power margins at the sources and the complex power drawn by and the voltage magnitude at the particular load bus. These special inputs have been proposed essentially to take care of two types of evolving voltage instability processes in a system viz. the reactive power sources gradually exhausting their limits as well as the transmission system approaching its maximum power transfer capabilities.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115959691","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745286
A. Kirubakaran, R. Nema, S.K. Jain
The private power producers are increasing rapidly to meet rising load demand in domestic, commercial and Industrial sector. In this scenario distribution generation system (DGs) plays increasingly important role over fossil fuel generation. A review is therefore carried out in this area of distributed generation system (DGs) with emphasis on Solid Oxide Fuel Cells (SOFCs). The study is performed to review the impact of SOFC's characteristics and associated control strategies on system dynamic behavior in standalone/grid connected applications with the constraint of providing good quality supply to the customers. The main aim of this review is to support researchers in the above field to carry out further research work so as to evolve/design an effective dynamic model/power conditioning unit with overall reduced system cost and increased life span & efficiency of generating system.
{"title":"Distributed Generation by Solid Oxide Fuel Cell: A Review","authors":"A. Kirubakaran, R. Nema, S.K. Jain","doi":"10.1109/ICPST.2008.4745286","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745286","url":null,"abstract":"The private power producers are increasing rapidly to meet rising load demand in domestic, commercial and Industrial sector. In this scenario distribution generation system (DGs) plays increasingly important role over fossil fuel generation. A review is therefore carried out in this area of distributed generation system (DGs) with emphasis on Solid Oxide Fuel Cells (SOFCs). The study is performed to review the impact of SOFC's characteristics and associated control strategies on system dynamic behavior in standalone/grid connected applications with the constraint of providing good quality supply to the customers. The main aim of this review is to support researchers in the above field to carry out further research work so as to evolve/design an effective dynamic model/power conditioning unit with overall reduced system cost and increased life span & efficiency of generating system.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116267491","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745282
S. Padmakumar, K. Roy, V. Agarwal
Model based fault detection and diagnosis in induction motor is gaining importance as it can take care of model and measurement uncertainties with the help of variants of Kalman Filters. A study of such a methodology and the potential to apply the same online is discussed. Mainly soft faults are considered for this work and MATLAB simulation results are presented. The data generation, filter convergence issues, hypothesis testing, generalized likelihood estimates etc. are addressed. A SIMLINK model is used for data generation and various types of faults are introduced. An extended Kalman filter using MATLAB is run to detect the changes.
{"title":"Induction Machines: A Novel, Model based Non-invasive Fault Detection and Diagnosis Technique","authors":"S. Padmakumar, K. Roy, V. Agarwal","doi":"10.1109/ICPST.2008.4745282","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745282","url":null,"abstract":"Model based fault detection and diagnosis in induction motor is gaining importance as it can take care of model and measurement uncertainties with the help of variants of Kalman Filters. A study of such a methodology and the potential to apply the same online is discussed. Mainly soft faults are considered for this work and MATLAB simulation results are presented. The data generation, filter convergence issues, hypothesis testing, generalized likelihood estimates etc. are addressed. A SIMLINK model is used for data generation and various types of faults are introduced. An extended Kalman filter using MATLAB is run to detect the changes.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127319781","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745314
J. Jamnani, S. Kanitkar
Development in electrical power transmission system requires the use of circuit breakers with increasing breaking capacity. At present circuit breakers are to be installed on 245 kV to 760 kV power system with short circuit ratings upto 63 kA. To test high voltage CBs, direct testing using the power system or short circuit alternators are not feasible. The testing of high voltage CBs of larger capacity requires very large capacity of testing station. To increase testing plant power is neither an economical nor a very practical solution. Therefore indirect methods of testing are used for testing of large CBs. Synthetic testing is an alternative equivalent method for testing of high voltage circuit breakers and is accepted by the standards. Parallel current injection synthetic testing is the most widely used method for testing of CBs. This paper presents a comprehensive review of TRV rating concepts, standard TRV envelopes, types of synthetic test circuits used for high voltage circuit breakers. Design and simulation of 4-parameters TRV synthetic testing circuits is done by using PSIM simulator. Three different 4-Parameters TRV circuits are simulated for a 245 kV rating circuit breaker for comparison purpose. Design optimization is also done to reduce the energy required by the capacitor banks. The results obtained by using different circuits have been discussed in the paper. The comparison is made on aspects of equivalence, operation, required capacitive energy and applicability.
{"title":"Design, Simulation and Comparison of Synthetic Test Circuits for High Voltage Circuit Breakers","authors":"J. Jamnani, S. Kanitkar","doi":"10.1109/ICPST.2008.4745314","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745314","url":null,"abstract":"Development in electrical power transmission system requires the use of circuit breakers with increasing breaking capacity. At present circuit breakers are to be installed on 245 kV to 760 kV power system with short circuit ratings upto 63 kA. To test high voltage CBs, direct testing using the power system or short circuit alternators are not feasible. The testing of high voltage CBs of larger capacity requires very large capacity of testing station. To increase testing plant power is neither an economical nor a very practical solution. Therefore indirect methods of testing are used for testing of large CBs. Synthetic testing is an alternative equivalent method for testing of high voltage circuit breakers and is accepted by the standards. Parallel current injection synthetic testing is the most widely used method for testing of CBs. This paper presents a comprehensive review of TRV rating concepts, standard TRV envelopes, types of synthetic test circuits used for high voltage circuit breakers. Design and simulation of 4-parameters TRV synthetic testing circuits is done by using PSIM simulator. Three different 4-Parameters TRV circuits are simulated for a 245 kV rating circuit breaker for comparison purpose. Design optimization is also done to reduce the energy required by the capacitor banks. The results obtained by using different circuits have been discussed in the paper. The comparison is made on aspects of equivalence, operation, required capacitive energy and applicability.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127083560","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745190
A. Rahmati, M. Sanaye-Pasand
This paper presents a new algorithm for transformer differential protection, based on pattern recognition of the instantaneous differential currents. A decision logic by wavelet Transform has been devised using extracted feature from differential currents due to internal fault and inrush currents. In this logic, diagnosis criterion is based on time difference of amplitudes of wavelet coefficients over a specified frequency band. The proposed algorithm is evaluated using various simulated inrush and internal fault current cases on a power transformer that has been modeled using Electromagnetic Transients Program software. Results of evaluation study show that, proposed wavelet based differential protection scheme can discriminate internal faults from inrush currents in less than 5 ms.
{"title":"New Method for Discrimination of Transformers Internal Faults from Magnetizing Inrush Currents Using Wavelet Transform","authors":"A. Rahmati, M. Sanaye-Pasand","doi":"10.1109/ICPST.2008.4745190","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745190","url":null,"abstract":"This paper presents a new algorithm for transformer differential protection, based on pattern recognition of the instantaneous differential currents. A decision logic by wavelet Transform has been devised using extracted feature from differential currents due to internal fault and inrush currents. In this logic, diagnosis criterion is based on time difference of amplitudes of wavelet coefficients over a specified frequency band. The proposed algorithm is evaluated using various simulated inrush and internal fault current cases on a power transformer that has been modeled using Electromagnetic Transients Program software. Results of evaluation study show that, proposed wavelet based differential protection scheme can discriminate internal faults from inrush currents in less than 5 ms.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125880246","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745347
Liu Qing, Wang Zeng-ping, Zheng Zhenhua
The static synchronous series compensator (SSSC) is a new series compensator equipment of the FACTS family. Compared to the Thyristor Controlled Series Compensation (TCSC) which is in common use, the SSSC has wider control range and faster response speed. The study and comparison on their transient control behavior has much to do with the stability of the power system and the setting of relay protection components. Based on the principle of SSSC and TCSC, the dynamic equation of Single Machine Infinite Bus System (SMIB) has been considered. The SMIB system considered SSSC and TCSC is built by using the simpowersystem toolbox of MATLAB, and the transient characteristic is simulated. The simulation result demonstrates that the capacity SSSC needs was less than TCSC and the phase-angle difference was smaller than TCSC when reaches the same compensation capacity. The effects on damping low-frequency oscillation and the response speed of SSSC were superior to TCSC.
{"title":"Study and Simulation of SSSC and TCSC Transient Control Performance","authors":"Liu Qing, Wang Zeng-ping, Zheng Zhenhua","doi":"10.1109/ICPST.2008.4745347","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745347","url":null,"abstract":"The static synchronous series compensator (SSSC) is a new series compensator equipment of the FACTS family. Compared to the Thyristor Controlled Series Compensation (TCSC) which is in common use, the SSSC has wider control range and faster response speed. The study and comparison on their transient control behavior has much to do with the stability of the power system and the setting of relay protection components. Based on the principle of SSSC and TCSC, the dynamic equation of Single Machine Infinite Bus System (SMIB) has been considered. The SMIB system considered SSSC and TCSC is built by using the simpowersystem toolbox of MATLAB, and the transient characteristic is simulated. The simulation result demonstrates that the capacity SSSC needs was less than TCSC and the phase-angle difference was smaller than TCSC when reaches the same compensation capacity. The effects on damping low-frequency oscillation and the response speed of SSSC were superior to TCSC.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126007345","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 : 2008-10-01DOI: 10.1109/ICPST.2008.4745334
Jiqiang Wang, Fengxiang Wang, Xiaoguang Kong
There is increasing interest in high speed machines for industry applications due to the merits of high power density and small size. However, the heat dissipation of the high speed machine becomes a series problem also due to the small size and high power loss density. Therefore, how to estimate accurately the power losses and temperature rise is a big issue for the high speed machine design. In this paper, the calculation methods of power losses and temperature of high speed PM generator are studied. The air friction loss on the rotor surface is calculated by analytical method; and the core loss, copper loss and losses in the rotor are calculated based on the transient field-circuit coupled finite element analysis. The temperature field distribution of the machine is also analyzed using the finite element method. The calculated temperature is compared with the tested result for a high speed permanent magnet prototype machine.
{"title":"Losses and Thermal Analysis of High Speed PM Machine","authors":"Jiqiang Wang, Fengxiang Wang, Xiaoguang Kong","doi":"10.1109/ICPST.2008.4745334","DOIUrl":"https://doi.org/10.1109/ICPST.2008.4745334","url":null,"abstract":"There is increasing interest in high speed machines for industry applications due to the merits of high power density and small size. However, the heat dissipation of the high speed machine becomes a series problem also due to the small size and high power loss density. Therefore, how to estimate accurately the power losses and temperature rise is a big issue for the high speed machine design. In this paper, the calculation methods of power losses and temperature of high speed PM generator are studied. The air friction loss on the rotor surface is calculated by analytical method; and the core loss, copper loss and losses in the rotor are calculated based on the transient field-circuit coupled finite element analysis. The temperature field distribution of the machine is also analyzed using the finite element method. The calculated temperature is compared with the tested result for a high speed permanent magnet prototype machine.","PeriodicalId":107016,"journal":{"name":"2008 Joint International Conference on Power System Technology and IEEE Power India Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126855838","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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