直流输电比起交流输电更适合进行远距离高压输电，基于PSCAD电磁暂态仿真软件构建了交流系统、换流变圧器、换流器、交-直流滤波器、平波电抗器及直流输电线路等的仿真模型，并以此搭建了500kV高压直流输电系统仿真模型，验证了该模型的准确性。(DC transmission is more suitable for long-distance transmission than AC transmission, the electromagnetic transient simulation soft

研究适合低压使用的并网逆变器，直流稳压电源作为逆变器的输入，能够将400V的直流电压转换成有效值为220V，工频为50Hz的电网电压，实现并网。(A grid connected inverter suitable for low voltage operation is studied. The DC regulated power supply is used as the input of the inverter, and the DC voltage of 400V can be co

A single phase grid connected with a photovoltaic (PV) power system that will provide high voltage gain with state model analysis for the control of the system has been presented. First the photovoltaic system is designed and simulated using MATLAB