Pub Date : 2010-12-01DOI: 10.7158/1448837X.2013.11464365
C. Rowe, T. Summers, R. Betz
The microgrid is an environment constructed with the aim of controlling local distributed resources. The most common power flow control technique utilised inside a power electronics dominated or standalone microgrid is- a technique known as power frequency droop. This paper develops a novel droop controller based on an arctan power profile that can provide natural limiting of frequency deviations and accurate frequency output. The new control system has been simulated in SABER and results are presented that show the advantages of the control. A low voltage microgrid consisting of two inverters and a passive load has been constructed. Experimental results from the hardware system are presented to confirm the operation of the new droop controller.
{"title":"Arctan power frequency droop for power electronics dominated microgrids","authors":"C. Rowe, T. Summers, R. Betz","doi":"10.7158/1448837X.2013.11464365","DOIUrl":"https://doi.org/10.7158/1448837X.2013.11464365","url":null,"abstract":"The microgrid is an environment constructed with the aim of controlling local distributed resources. The most common power flow control technique utilised inside a power electronics dominated or standalone microgrid is- a technique known as power frequency droop. This paper develops a novel droop controller based on an arctan power profile that can provide natural limiting of frequency deviations and accurate frequency output. The new control system has been simulated in SABER and results are presented that show the advantages of the control. A low voltage microgrid consisting of two inverters and a passive load has been constructed. Experimental results from the hardware system are presented to confirm the operation of the new droop controller.","PeriodicalId":215501,"journal":{"name":"2010 20th Australasian Universities Power Engineering Conference","volume":"422 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122951839","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 : 2010-12-01DOI: 10.7158/1448837X.2013.11464363
H. Zhang, S. Finney, J. Fletcher, A. Massoud, J. Yang, B. Williams
This paper investigates the compensation and modulation processes of the five-level diode-clamped APF, compensating a three-phase rectified RL load by redundant vectors. From the analysis, a hybrid SVM algorithm allows capacitor voltage balancing. Simulation and experimental results validate the SVM algorithm.
{"title":"Dc-link capacitor voltage balancing for a five-level diode-clamped active power filter using redundant vectors","authors":"H. Zhang, S. Finney, J. Fletcher, A. Massoud, J. Yang, B. Williams","doi":"10.7158/1448837X.2013.11464363","DOIUrl":"https://doi.org/10.7158/1448837X.2013.11464363","url":null,"abstract":"This paper investigates the compensation and modulation processes of the five-level diode-clamped APF, compensating a three-phase rectified RL load by redundant vectors. From the analysis, a hybrid SVM algorithm allows capacitor voltage balancing. Simulation and experimental results validate the SVM algorithm.","PeriodicalId":215501,"journal":{"name":"2010 20th Australasian Universities Power Engineering Conference","volume":"24 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130282911","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 : 2010-12-01DOI: 10.7158/1448837X.2013.11464366
Zhentao S. Du, P. Watterson
A new yoke winding for a radial magnetic bearing with permanent magnet bias flux is investigated and shown to reduce the copper loss and copper cost, by 32% in the prototype built. Magnetic circuit analysis neglecting fringing was found to give a poor estimate of the permanent magnet bias flux and 3D finite element analysis (FEA) would be needed to model it. However, 2D FEA was sufficient to model the field in the plane of the stator laminations, providing that the correct bias flux was imposed as a boundary condition. Solutions for the axial magnetic vector potential component Az were obtained, with a discontinuity prescribed across a cut from the inner to outer domain boundary. A small prototype was built and tested on a shaft whose other end was supported by a ball bearing race with free angular movement. For each of the horizontal and vertical directions, closed loop control was applied with Hall elements providing the shaft position signal. A lead-lag controller, designed using Matlab Simulink and implemented in Turbo Pascal 6, levitated the rotor.
{"title":"Design and implementation of a radial magnetic bearing with permanent magnet bias","authors":"Zhentao S. Du, P. Watterson","doi":"10.7158/1448837X.2013.11464366","DOIUrl":"https://doi.org/10.7158/1448837X.2013.11464366","url":null,"abstract":"A new yoke winding for a radial magnetic bearing with permanent magnet bias flux is investigated and shown to reduce the copper loss and copper cost, by 32% in the prototype built. Magnetic circuit analysis neglecting fringing was found to give a poor estimate of the permanent magnet bias flux and 3D finite element analysis (FEA) would be needed to model it. However, 2D FEA was sufficient to model the field in the plane of the stator laminations, providing that the correct bias flux was imposed as a boundary condition. Solutions for the axial magnetic vector potential component Az were obtained, with a discontinuity prescribed across a cut from the inner to outer domain boundary. A small prototype was built and tested on a shaft whose other end was supported by a ball bearing race with free angular movement. For each of the horizontal and vertical directions, closed loop control was applied with Hall elements providing the shaft position signal. A lead-lag controller, designed using Matlab Simulink and implemented in Turbo Pascal 6, levitated the rotor.","PeriodicalId":215501,"journal":{"name":"2010 20th Australasian Universities Power Engineering Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123963379","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 : 2010-07-01DOI: 10.1080/1448837X.2012.11464338
N. Shahabi, A. A. Boora, Firuz Zare, G. Ledwich, A. Ghosh
This paper presents a new method for winding configuration in planar magnetic elements with more than two layers. It has been proven by 3D Finite Element method and mathematical modelling that this suggested configuration results in reduction of the equivalent capacitive coupling in the planar inductor.
{"title":"A novel winding structure in planar inductors to decrease the overall capacitive couplings","authors":"N. Shahabi, A. A. Boora, Firuz Zare, G. Ledwich, A. Ghosh","doi":"10.1080/1448837X.2012.11464338","DOIUrl":"https://doi.org/10.1080/1448837X.2012.11464338","url":null,"abstract":"This paper presents a new method for winding configuration in planar magnetic elements with more than two layers. It has been proven by 3D Finite Element method and mathematical modelling that this suggested configuration results in reduction of the equivalent capacitive coupling in the planar inductor.","PeriodicalId":215501,"journal":{"name":"2010 20th Australasian Universities Power Engineering Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121474227","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：