{"title":"Voltage control of Self-Excited Induction Generator","authors":"K. Sowndarya, R. Essaki, C. Kamalakannan","doi":"10.1109/ICEES.2014.6924182","DOIUrl":"https://doi.org/10.1109/ICEES.2014.6924182","url":null,"abstract":"Self-Excited Induction Generator(SEIG) are found to be more suitable for wind energy conversion application required at remote windy location and used in isolated areas to generate electrical energy. In spite of its advantage (low cost, ease of maintenance, etc...) they have poor voltage regulation even in constant speed. Such generators are not able to maintain the thermal voltage with load, the voltage profile falls shortly with load. To control the voltage profile, power electronic circuit is used with both conversion and inversion process. In this project, the voltage is controlled and maintained with the output voltage of 400V. The 400V, 3.5kW, Self-Excited Induction Generator is controlled and maintained with the output voltage of 400V using the closed loop operation of the power electronic circuit devices such as diode bridge rectifier, buck-boost converter and the Voltage Source Inverter (120° mode of operation). Using the above mentioned power electronic circuit devices, the voltage control is carried out.","PeriodicalId":315326,"journal":{"name":"2014 IEEE 2nd International Conference on Electrical Energy Systems (ICEES)","volume":"17 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":"115397958","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":"A novel approach to prevent grid collapsing based on frequency estimation with increased user visibility","authors":"R. K. Justine, S. Sofana Reka","doi":"10.1109/ICEES.2014.6924156","DOIUrl":"https://doi.org/10.1109/ICEES.2014.6924156","url":null,"abstract":"One of the most important parameters of a power system is the system frequency. The frequency can vary over a small range due to generation-load mismatches. That is, when the power consumed by loads and overall losses is greater than the generated power, the system operating frequency will decrease, resulting in a situation known as the underfrequency condition. The main reasons can be either the loss of any one or more generators in the generating side stations or if there is a sudden increase in the power consumed during certain peak hours of a day. Indeed, if the loads in a system are suddenly lost or disconnected from the system, it also leads to a condition called as the overfrequency condition. This condition is characterised by greater input power than the consumed power by the loads. The rest of the loads in the system will absorb the extra power and the generator inertia, leading to an increase in the system frequency. In both the cases, the system frequency changes from the safer frequency range, leading to tripping off of the substation and further collapsing of the entire system. In this paper, the author is proposing a novel approach, by which employing a smart meter, which estimates the system frequency change caused by overload or underload condition and comparing it with a preset frequency value set by the Load Dispatching Authority, the line responsible for the frequency change is being isolated from rest of the power system or being given only the demanded power. The preset frequency is determined by analysing the parameters of electric power-based on a load forecasting. The method is employed with an embedded system along with an algorithm and Network Synchronisation with central server.","PeriodicalId":315326,"journal":{"name":"2014 IEEE 2nd International Conference on Electrical Energy Systems (ICEES)","volume":"530 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":"124263965","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":"Study of Multilevel Sinusoidal PWM methods for cascaded h-bridge multilevel inverters","authors":"S. Adithya, S. Raghu Raman","doi":"10.1109/ICEES.2014.6924176","DOIUrl":"https://doi.org/10.1109/ICEES.2014.6924176","url":null,"abstract":"This paper is a study of Multilevel Sinusoidal Pulse Width Modulation (MSPWM) methods; Phase Disposition (PD), Alternate Phase Opposition Disposition (APOD), Phase Opposition Disposition (POD) on a single phase Cascaded H-Bridge Multilevel Inverter. Various factors such as amplitude modulation index (Ma), frequency modulation index (Mf), phase angle between carrier and reference modulating wave (Φ) have been considered for simulation. Variation in these factors and their effect on inverter performance is evaluated. Factors such as DC bus utilization, output r.m.s voltage, total harmonic distortion (%THD), dominant harmonic order, switching losses are evaluated based on simulation results.","PeriodicalId":315326,"journal":{"name":"2014 IEEE 2nd International Conference on Electrical Energy Systems (ICEES)","volume":"13 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":"132022289","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}