供应1756-A10 1756-A13 1756-A13K 1756-A17 1756-A17K 模块

在双闭环控制基础上加入负载电流前馈控制是提高PWM整流器抗负载扰动动态性能的主要方法。这里结合PWM整流器在两相同步旋转坐标系下的数学模型，给出了PWM整流器双闭环PI控制系统结构图，从控制角度分析了双闭环PI控制在克服负载扰动方面的不足，具体设计了负载扰动前馈补偿器。分析表明，理论上可达到对负载扰动完全补偿的动态前馈补偿器在实际系统中难以实现，为简化问题，得到了静态前馈补偿器表达式，分析了负载电流前馈控制策略的补偿机理及影响静态前馈补偿效果的因素。最后用实验验证了理论分析的正确性并提出了进一步提高PWM整流器抗负载扰动动态性能的方法。

供应1756-A10 1756-A13 1756-A13K 1756-A17 1756-A17K 模块

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