基于虚拟联轴电机的直流固态变压器研究  

Research on DC electronic power transformer coupling shaft based on shaft coupling virtual motor control (SC-VCM)

作　　者：张苏捷 赵晋斌[1] 杨旭红[1] 李文旗[1] 何超杰[1] 刘琛 

机构地区：[1]上海电力学院,上海200090

出　　处：《电测与仪表》2017年第20期35-42,共8页Electrical Measurement & Instrumentation

基　　金：上海市电站自动化技术重点实验室开放课题(13DZ2273800);上海市科技创新行动技术高新技术领域重点项目(14511101200);上海市重点科技攻关计划(14110500700);上海自然科学基金项目(16ZR1413000);国家自然科学基金资助项目(61203224)

摘　　要：针对传统单级DC/DC变换器高降压变换困难的以及发电间歇问题及电网惯性不足的问题,文中提出了一种具有虚拟连轴电机特性的高降压比直流固态变压器(DC Electronic Power Transformer,DCEPT)控制方法。控制策略可在维持直流配网稳定的同时实现对上级高压电网的自主响应与功率支持。为直流并网接口提供惯性支持,有效实现对上级电网的惯性和阻尼支撑。拓扑具有降压比较高、负载响应速度快、具有较好的抗干扰能力。仿真结果验证了所提拓扑方法以及虚拟联轴控制策略的有效性。In view of the difficult high step-down transform problems and lack of intermittent power generation and grid inertia in traditional single stage DC/DC converter,a virtual coupling DC motor characteristic of high step-down solid state transformer control method is proposed in this paper. The control strategy can be realized in the maintenance of the DC power distribution network and the independent response and power support of the higher voltage power grid. The topology has a high buck,fast load response,and a good ability to resist interference. The simulation results verify the proposed topology and the effectiveness of the virtual axis control strategy.

关 键 词：直流电网 高降压比 直流微电网 虚拟联轴电机 固态变压器 变换器 

分 类 号：TM731[电气工程—电力系统及自动化]