CAJ | 학술논문

传统能源的快速消耗使新能源得以快速发展，其中以光伏发电尤为引人瞩目。作为光伏发电系统能量转换与控制核心的光伏逆变器，是将光伏阵列输出的直流电转换成交流电并注入到电网的电力装置。其拓扑结构的性能不仅决定着整个系统的发电效率，而且大大影响总体系统成本。作为快速发展的分布式光伏发电系统，单相单级升降压逆变器具有成本低、效率高、结构简单的优点，成为主要的光伏逆变器。论文以5种典型的隔离型和非隔离型的单相单级升降压逆变器为研究对象，从拓扑结构、是否并网运行以及主要性能指标等方面进行了比较分析，说明了逆变器设计应综合考虑开关器件个数、高频工作器件数、工作对称性、EMI（电磁干扰）以及系统效率等因素，指出未来单相单级升降压逆变器的低EMI干扰、低成本、高效率以及高可靠性的发展趋势。
전통능원적쾌속소모사신능원득이쾌속발전，기중이광복발전우위인인촉목。작위광복발전계통능량전환여공제핵심적광복역변기，시장광복진렬수출적직류전전환성교류전병주입도전망적전력장치。기탁복결구적성능불부결정착정개계통적발전효솔，이차대대영향총체계통성본。작위쾌속발전적분포식광복발전계통，단상단급승강압역변기구유성본저、효솔고、결구간단적우점，성위주요적광복역변기。논문이5충전형적격리형화비격리형적단상단급승강압역변기위연구대상，종탁복결구、시부병망운행이급주요성능지표등방면진행료비교분석，설명료역변기설계응종합고필개관기건개수、고빈공작기건수、공작대칭성、EMI（전자간우）이급계통효솔등인소，지출미래단상단급승강압역변기적저EMI간우、저성본、고효솔이급고가고성적발전추세。
Rapid consumption of traditional energy enables rapid development of new energy,and photovoltaic power generation is particularly striking. Photovoltaic(PV)inverter,as the converting and controlling core in photovoltaic generation system,is an important power device for converting DC of photovoltaic array into AC current and then injecting into power line. The topological structure of PV inverter not only decides the efficien-cy of the whole generation system,but also greatly affects the overall system costs. With the rapid development of distributed photovoltaic generation system,single-phase single-stage buck-boost inverter has the advantages of low cost,high efficiency,simple structure,and becomes the main PV inverter. This paper studies the typi-cal five different non-isolated and isolated single-phase single-stage buck-boost inverters and compares their to-pology structure. It is concluded that the design of PV inverter should consider power device number,high fre-quency device number,the symmetry of system operation,EMI interference and system efficiency,and the fu-ture development of single-phase single-stage buck-boost inverter may aim at lower EMI interference,lower cost,higher efficiency and higher reliability.