Improved digital control scheme of three phase UPS inverter using double control strategy
Improved digital control scheme of three phase UPS inverter using double control strategy
复制标题
采用双控制策略的三相UPS逆变器改进数字控制方案
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
Byoung
中科院分区：
文献类型：
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作者：
Jaeho Choi;Byoung
提出了一种基于双控制策略的UPS逆变器数字化控制方案。该方法由内电压调节电流控制器和外电流调节电压控制器组成。为了改善动态响应，电压控制器具有负载预测前馈回路，电流控制器具有输出电压前馈回路。PI补偿器包括在每个电压和电流控制器用于保证系统的鲁棒性。文中给出了该方案的数学模型和控制算法，并对一台5kVA的样机进行了数字仿真和实验，验证了该双控制策略的有效性。
A novel digital control scheme of a UPS inverter based on the double control strategy is proposed. This method consists of a inner voltage regulated current controller and an outer current regulated voltage controller. In order to improve the dynamic response, the voltage controller has a load predictive feedforward loop and the current controller has an output voltage feedforward loop. PI compensators included in each of the voltage and current controllers are used to guarantee the robustness of the system. The mathematical model and the control algorithm of the proposed scheme are described and digital simulation and experimental results for a 5 kVA prototype are provided to verify the validity of the proposed double control strategy.