Grid Voltage Sensor-less Protection Scheme for One Cycle-Controlled Single-phase Photovoltaic Inverter Systems
作者机构：are with National Institute of Technology GoaFarmagudi Ponda 403401India
出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)
年 卷 期：2022年第8卷第6期
页 面：1720-1729页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：supported by the Science and Engineering Research Board Department of Science and Technology Government of India under Grant ECR/2016/000876
主 题：One cycle control photovoltaic systems voltage sensorless voltage protection over/under voltage protection islanding detection
摘 要：One-cycle-controlled(OCC)inverters are suitable for small single-phase photovoltaic distributed-generator systems because of their simplicity,phase-locked-loop free structure,grid voltage sensor-less operation,and *** voltage sensor-less control helps reduce cost and increases reliability in *** various sensors are used for implementation of a protection *** this paper,a grid voltage sensorless protection scheme for OCC based single-phase inverter systems is *** estimated value of voltage at point of common coupling(VPCC)is used for protecting the system during over/under voltage conditions of the grid,implementing of voltage ride through conditions,and for disconnecting the grid during islanded *** VPCC is estimated from the measured inverter current,switching pulses,and the measured dc-link voltage using a second-order *** and experimental studies are performed to verify the efficacy of the proposed voltage sensor-less protection mechanism triggered using estimated VPCC.
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