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Reliability modeling and analysis of a micro-grid with significant clean energy penetration 具有显著清洁能源渗透的微电网可靠性建模与分析
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7167787
Xiaofang Shi, A. Bazzi
{"title":"Reliability modeling and analysis of a micro-grid with significant clean energy penetration","authors":"Xiaofang Shi, A. Bazzi","doi":"10.1109/ICPE.2015.7167787","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7167787","url":null,"abstract":"This paper reviews three main methods in reliability analysis for power systems and applies them to a micro-grid with significant clean energy penetration. The approaches used are Reliability Block Diagrams (RBD), Fault Tree Analysis (FTA) and Markov Reliability Modeling (MRM). Each method is introduced and applied to a simple system to illustrate its application procedure. Reliability parameters such as the system's mean time to failure (MTTF), component structure importance, and reliability function are evaluated using simulation models. All three methods are then used to find the reliability measures of a real micro-grid which is characterized by significant clean energy penetration using solar photovoltaic panels and a fuel cell.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127680354","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}
引用次数: 10
Dynamic control and performance of an isolated dual-active-bridge DC–DC converter 隔离型双有源桥式DC-DC变换器的动态控制与性能
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7167980
Kazuto Takagi, H. Fujita
{"title":"Dynamic control and performance of an isolated dual-active-bridge DC–DC converter","authors":"Kazuto Takagi, H. Fujita","doi":"10.1109/ICPE.2015.7167980","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7167980","url":null,"abstract":"This paper presents dynamic analysis and control of an isolated dual-active-bridge (DAB) dc-dc converter. Conventional control methods of the DAB converter may cause dc offsets in both inductor current and transformer magnetizing current in transient states. The dc offset in the inductor current introduces an excessive peak current through the switching devices. The dc offset in the magnetizing current cannot be neglected and may induce magnetic flux saturation. Conventional phase-shift control methods simultaneously turn on and off the diagonal switches in each H-bridge to produce a square-wave voltage. On the other hand, the proposed method independently controls diagonal switches to generate short zero-voltage periods in a transient state. The theoretical analysis derives the requirements of the switching angles, which enable both inductor and magnetizing currents to be settled within a half switching period without any dc offset. A 5-kW experimental system verifies the validity of the proposed control method.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127778792","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}
引用次数: 12
Research on intelligent power supply control based on sensor-less temperature identification of Electric Submersible Motor 基于无传感器潜水电机温度识别的智能电源控制研究
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7168168
Haicong Zhang, Jianxiong Yu, Qingyue Jiang, Liguo Wang, Dianguo Xu
{"title":"Research on intelligent power supply control based on sensor-less temperature identification of Electric Submersible Motor","authors":"Haicong Zhang, Jianxiong Yu, Qingyue Jiang, Liguo Wang, Dianguo Xu","doi":"10.1109/ICPE.2015.7168168","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7168168","url":null,"abstract":"This paper proposes a sensor-less temperature identification and an intelligent power supply method for Electric Submersible Motor (ESM) in oil wells. With measurements obtained from the proposed identification, a thermodynamics module is established for the temperature and the fault detection. Besides, the relationship between the rotor temperature and the load can be calculated. Then based on different loads, suitable ratios of voltage to frequency in different conditions can be captured. Finally, the control of the ratio enables power supply to match the oil pump output automatically. The experimental results from an ESM (12kW) in lab are shown to validate the proposed method. The whole scheme is effective and reliable and is therefore suitable to reduce the maintenance frequency of oil pumps and the power consumption of oil wells.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132701391","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}
引用次数: 4
A Parallel Power Quality Conditioner without harmonic detection 无谐波检测的并联电能质量调节器
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7168133
Yan-jun Zhang, Zhen Yang, ShengXin Yang, Rong Zhang
{"title":"A Parallel Power Quality Conditioner without harmonic detection","authors":"Yan-jun Zhang, Zhen Yang, ShengXin Yang, Rong Zhang","doi":"10.1109/ICPE.2015.7168133","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7168133","url":null,"abstract":"A non-harmonic detection Parallel Power Quality Conditioner (PPQC) which can compensate harmonics and reactive power without harmonic and reactive power detection is introduced. By studying the energy exchange process and principle between the AC side and DC side, a DC voltage control method, controlling the magnitude and direction of the current flowing into the DC side, is proposed, to keep the DC voltage stable. The influence of the load active current on the DC voltage is analyzed in detail. A new non-harmonic detection control strategy is proposed with the load active current as a perturbation. The proposed control strategy which avoids complex detection algorithm, and in turn the errors and delay caused by detection algorithm, improves dynamic response speed greatly. Experiment results exhibit excellent harmonic and reactive power compensation performance and dynamic response.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"268 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132842078","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}
引用次数: 0
Integration strategy for bidirectional and unidirectional converters aiming for zero power pollution in residential applications 面向住宅零电力污染的双向和单向变流器集成策略
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7168015
Joshua Ivaldi, S. Park, Sung-Yeul Park
{"title":"Integration strategy for bidirectional and unidirectional converters aiming for zero power pollution in residential applications","authors":"Joshua Ivaldi, S. Park, Sung-Yeul Park","doi":"10.1109/ICPE.2015.7168015","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7168015","url":null,"abstract":"The reactive power compensation performance of aggregated unidirectional power factor correction converters commonly found in household appliances is evaluated. Operating under supervisory command, these converters have the potential to serve as a low cost alternative to conventional reactive power compensation solutions by utilizing their available capacity for reactive power support in smartgrids and microgrids. It is demonstrated that unidirectional converters are able to support their load demand while simultaneously compensating reactive power demand elsewhere in the grid. However, as the generated reactive power increases, harmonic current content is introduced in the grid. In this case, locally available photovoltaic or vehicle-to-grid bidirectional converters capable of harmonic current compensation can serve as active power filters. A MATLAB/Simulink model is used to assess the feasibility and performance of the proposed strategy.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133917783","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}
引用次数: 4
Variable time step control for six-step operation in SMPMSM 可变时间步长控制在SMPMSM六步操作
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7167805
Jaeyong Park, Sungho Jung, Jung-Ik Ha
{"title":"Variable time step control for six-step operation in SMPMSM","authors":"Jaeyong Park, Sungho Jung, Jung-Ik Ha","doi":"10.1109/ICPE.2015.7167805","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7167805","url":null,"abstract":"Six-step operation has many advantages in Permanent Magnet Synchronous Machine (PMSM) drives such as extended utilization range of the inverter output voltage. However, the error in the voltage modulation can be occurred when the PMSM runs at ultra-high speed (above 50krpm), that is, the ratio of the sampling frequency to the fundamental frequency (Fratio = fsamp/ffund) is small. In this paper, the realization of the six-step operation in Surface Mounted PMSM (SMPMSM) with the variable time step control is proposed. The control variable is the time step in the proposed method. The torque is controlled by manipulating the time step. By updating the inverter output voltage on every time step, beat phenomenon caused by small Fratio can be solved. The proportional and integral gains of the current controller are determined with consideration of the system stability. The feasibility of the proposed method has been verified by experiments.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134192335","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}
引用次数: 6
Torque ripple reduction of PM synchronous motor for wide speed operating ranges 永磁同步电动机宽转速范围转矩脉动减小
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7167809
Jong-Hyun Kim, Kwan-Yuhl Cho, Hag-Wone Kim, Byung-Kuk Lim, B. Han
{"title":"Torque ripple reduction of PM synchronous motor for wide speed operating ranges","authors":"Jong-Hyun Kim, Kwan-Yuhl Cho, Hag-Wone Kim, Byung-Kuk Lim, B. Han","doi":"10.1109/ICPE.2015.7167809","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7167809","url":null,"abstract":"The back emf harmonics of a PM synchronous motor is the main source of the torque ripples. The torque ripples make the mechanical vibration at low speeds and the acoustic noise at high speeds. The feed-forward harmonic currents compensation may reduce the torque ripples at low speeds, but the torque ripples at high speeds can't be reduced due to the limited bandwidth of the current controller. In this paper, the torque ripple reduction algorithm for wide speed operating ranges is proposed. The harmonic currents and the harmonic voltages that cancel the 6th order torque ripples are compensated to the reference currents and reference voltages, respectively. The torque ripples at low speeds are reduced by the compensated harmonic currents, and the torque ripples at high speeds are reduced by the compensated harmonic voltages. It is verified by the analysis and simulation that the proposed compensation reduces the torque ripples for wide speed ranges.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133118558","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}
引用次数: 6
Enhancement of parameter estimation accuracy using current shaping in PM machine drive 用电流整形法提高永磁电机传动参数估计精度
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7168071
Jinwoong Kim, Jung-Ik Ha
{"title":"Enhancement of parameter estimation accuracy using current shaping in PM machine drive","authors":"Jinwoong Kim, Jung-Ik Ha","doi":"10.1109/ICPE.2015.7168071","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7168071","url":null,"abstract":"The accurate value of the electric machine parameters is required to design an efficient current controller and torque controller in the permanent magnet synchronous machine (PMSM) drive system. The values of these parameters are not constant but vary with the operation condition. The stator winding resistance and rotor flux linkage are affected by the temperature. Inductances are changed according to the magnetic saturation. So each parameter need to be estimated in real time and updated to each controller. This paper enhances the accuracy of on-line parameter estimation in the low speed operation region using the proposed current shaping method. In the low speed operation region, the nonlinearity of voltage source inverter (VSI) causes estimation error. The proposed method adjusts the current reference to change rapidly at zero current region because the nonlinearity is severe at the region. By the dead time compensation and the proposed current shaping, the error caused area is reduced and estimation accuracy can be increased. Experimental results prove the feasibility and effectiveness of the proposed method.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115044063","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}
引用次数: 4
A multilevel converter topology based bidirectional inductive power transfer system with improved characteristics 基于多电平变换器拓扑的双向感应功率传输系统
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7168002
B. Nguyen, D. M. Vilathgamuwa, G. Foo, Peng Wang, Andrew Ong
{"title":"A multilevel converter topology based bidirectional inductive power transfer system with improved characteristics","authors":"B. Nguyen, D. M. Vilathgamuwa, G. Foo, Peng Wang, Andrew Ong","doi":"10.1109/ICPE.2015.7168002","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7168002","url":null,"abstract":"LCL network is one of the best choices for compensating bidirectional inductive power transfer (BIPT) systems. However, H-Bridge power converter of the conventional BIPT systems generates highly distorted AC current which results in reduced overall system efficiency particularly in high power BIPT systems. In order to overcome this drawback, a multilevel converter (MC) with selective harmonic distortion (SHE) modulation method is presented in this paper to eliminate high order harmonic components in converter voltages at both sides of BIPT systems. The proposed MC topology is constructed using a modified H-Bridge converter with minimum number of power switches. The proposed topology is suitable for low to medium power applications. The simulation results demonstrate the feasibility of the proposed scheme.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115548406","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}
引用次数: 4
Hierarchical control scheme for improving transient voltage recovery of a DFIG-based WPP 一种改进基于dfig的WPP暂态电压恢复的分级控制方案
2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia) Pub Date : 2015-06-01 DOI: 10.1109/ICPE.2015.7167887
Jinho Kim, E. Muljadi, Y. Kang
{"title":"Hierarchical control scheme for improving transient voltage recovery of a DFIG-based WPP","authors":"Jinho Kim, E. Muljadi, Y. Kang","doi":"10.1109/ICPE.2015.7167887","DOIUrl":"https://doi.org/10.1109/ICPE.2015.7167887","url":null,"abstract":"Modern grid codes require that wind power plants (WPPs) inject reactive power according to the voltage dip at a point of interconnection (POI). This requirement helps to support a POI voltage during a fault. However, if a fault is cleared, the POI and wind turbine generator (WTG) voltages are likely to exceed acceptable levels unless the WPP reduces the injected reactive power quickly. This might deteriorate the stability of a grid by allowing the disconnection of WTGs to avoid any damage. This paper proposes a hierarchical control scheme of a doubly-fed induction generator (DFIG)-based WPP. The proposed scheme aims to improve the reactive power injecting capability during the fault and suppress the overvoltage after the fault clearance. To achieve the former, an adaptive reactive power-to-voltage scheme is implemented in each DFIG controller so that a DFIG with a larger reactive power capability will inject more reactive power. To achieve the latter, a washout filter is used to capture a high frequency component contained in the WPP voltage, which is used to remove the accumulated values in the proportional-integral controllers. Test results indicate that the scheme successfully supports the grid voltage during the fault, and recovers WPP voltages without exceeding the limit after the fault clearance.","PeriodicalId":160988,"journal":{"name":"2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117276492","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}
引用次数: 3
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