【摘要】 采用双闭环瞬时值控制的逆变器具有输出波形动态响应快、稳态精度高和较强的抗扰性能。常用的双闭环控制技术有电感电流内环和电容电流内环之分:前者动态响应速度不够快,抗扰性能不够高;而后者不能对逆变电源进行很好地过流保护。采用基于状态空间理论的带负载电流前馈的电感电流内环电压外环PI-PI控制技术,在保证快速性和高稳定性的同时能够对逆变器进行快速地限流保护。最后,基于Matlab/Simulink的仿真和实验结果验证了这种方法的正确性,从而有效改善了系统输出电压波形。更多还原

【Abstract】 The inverters with dual-loop control of the instantaneous values have the performance of the output waveform with fast dynamic response, high steady-state accuracy and strong anti-interference performance. The general double closed-loop control technologies are divided into inner ring of the inductor current and capacitive current. The dynamic response speed of the former is not fast enough and the anti-interference performance is not high enough; While the latter cannot give a good overcurrent protection for the inverter power. The PI-PI control strategy of inductor current of inner ring and voltage of outer ring with load current feedforward is adopted in this paper based on the state space theory, which can ensure the fast and high stability performance as well as an effective overcurrent protection to the inverters. Finally, the simulation and experimental results verify the correctness of this method, so as to improve the output voltage waveform of the system effectively.更多还原