{"title":"A calculation method of photovoltaic array's operational point for MPPT evaluation based on one variable Newton-Raphson method","authors":"M. Uoya, H. Koizumi","doi":"10.1109/ICSET.2012.6357440","DOIUrl":"https://doi.org/10.1109/ICSET.2012.6357440","url":null,"abstract":"Computer simulation is essential for scientific research. Comparison and evaluation of Maximum Power Point Tracking (MPPT) algorithms for Photovoltaic (PV) array are also done in simulation because any irradiation and temperature conditions can be set up. In the conventional methods, Newton-Raphson method has been applied to nonlinear equations to obtain operational points of a PV array. In other methods, the point is obtained with combination of I-V curves of each PV module. In this paper, a new simple method to obtain the operational point of PV array is proposed. In this method, one variable Newton-Raphson method is repeated in place of expanding the number of variable to multivariable in the Newton-Raphson method. The proposed method was compared with the conventional combination method and proven to be accurate and speedier than the conventional one.","PeriodicalId":256740,"journal":{"name":"2012 IEEE Third International Conference on Sustainable Energy Technologies (ICSET)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131150573","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}
{"title":"An enhanced controller for shunt active filter interfacing renewable energy source and grid","authors":"Ilango Karuppasamy, P. Manitha, M. Nair","doi":"10.1109/iicpe.2012.6450379","DOIUrl":"https://doi.org/10.1109/iicpe.2012.6450379","url":null,"abstract":"Develoving efficient interfacing technologies to interconnect renewable energy sources with grid is a promising research area in renewable energy related applications. The interfacing unit becomes crucial as renewable energy sources when directly connected to grid, can inject harmonic components that may deteriorate the quality of power. This paper proposes a mechanism to use shunt active filter as an interface between renewable energy sources and grid with a modified and efficient control scheme. The shunt active filter with this modified controller controls the real power supplied by the grid (source) in addition to its usual functions such as reactive power compensation, power factor correction and harmonic elimination. Performance of the modified Icosφ controller is compared with that of IRPT control algorithm. Two nonlinear loads are considered here namely AC voltage controller as soft starter for induction motor and a diode bridge rectifier feeding resistive load. Simulation of proposed system proves the effectiveness of using a shunt active filter as the interfacing unit for grid integrated renewable energy systems.","PeriodicalId":256740,"journal":{"name":"2012 IEEE Third International Conference on Sustainable Energy Technologies (ICSET)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134074311","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}
{"title":"Single-sensor HCC PWM control of the boost type AC-DC converter giving unity power factor","authors":"A. N. Arvindan, R. Arun Kumar","doi":"10.1109/icset.2012.6357383","DOIUrl":"https://doi.org/10.1109/icset.2012.6357383","url":null,"abstract":"The bi-directional boost type improved power quality ac-dc converter (IPQC) is capable of providing transformerless power transfer between a high voltage dc (HVDC) link and a relatively low voltage ac system with improved power quality at input ac mains in terms of high power factor and low total harmonic distortion (THD). The current forced control (CFC) strategy is implemented in the single- phase half-bridge topology of the IPQC with closed loop control, adopting the hysteresis-band current control (HCC) pulse width modulation (PWM) technique. This paper presents unity power factor operations, in the rectification and inversion modes, with near sinusoidal line currents; of the IPQC that employs power MOSFETs. Simulation results confirm the efficacy of the control technique.","PeriodicalId":256740,"journal":{"name":"2012 IEEE Third International Conference on Sustainable Energy Technologies (ICSET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126265631","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}