CAJ | 학술논문

对传统矢量单周控制策略进行了改进，通过引进与电网电压同相位的三相虚拟电流与实际负载电流相加，使得变换器在负载功率不变的情况下系统等效阻抗变大，且恒大于零，实现四象限稳定运行。采用基于瞬时无功理论的方法对其电流相移补偿抑制，实现大功率变换器的单位功率因数运行及功率因数可调控制。搭建了一个250 kVA仿真模型，进行了仿真实验，验证了以上控制方法的可行性。
대전통시량단주공제책략진행료개진，통과인진여전망전압동상위적삼상허의전류여실제부재전류상가，사득변환기재부재공솔불변적정황하계통등효조항변대，차항대우령，실현사상한은정운행。채용기우순시무공이론적방법대기전류상이보상억제，실현대공솔변환기적단위공솔인수운행급공솔인수가조공제。탑건료일개250 kVA방진모형，진행료방진실험，험증료이상공제방법적가행성。
The traditional vector one-cycle control strategy has been improved in this article by introducing the three fictitious currents with the same voltage in power grid being added with the actual load currents, which ensures to ob-tain a lager and positive system equivalent impedance under the condition of convertor loader power unchanging and realize the four quadrant and stable operation. Based on instantaneous reactive theory method to suppress the current phase shift compensation, this paper realizes adjustable control on high-power converter power factor of the unit opera-tion and power factor. This paper sets up a 250kVA simulation model for testing the proposed method, and the simula-tion results show the feasibility of this control method.