一种新型结构的PR调节器在并网逆变器中的应用  

Application of a New Structure Proportional Resonant Regulator in Grid-connected Inverter

作　　者：徐刚[1] 陈增禄[1] 

机构地区：[1]西安工程大学电子信息学院,陕西省西安市710048

出　　处：《智能电网》2016年第5期493-498,共6页Smart Grid

摘　　要：比例谐振(PR)调节器通过提高基波频率处的增益达到消除稳态误差的目的,在并网逆变器的电流控制技术中得到广泛的应用。但由于传统结构PR调节器设计时存在各参数变化对系统增益与相位的影响意义不够明确、参数设计不够清晰的缺点,给调节器设计带来了困难。提出一种具有结构清晰、参数设计简单的新型结构PR调节器,且各参数变化对系统性能的影响互相独立,无需将比例参数值设为零来分析其余参数对系统的影响,能够实现对正弦指令电流的零稳态误差跟踪,具有很好的抗干扰能力和谐波抑制能力。最后,结合并网逆变系统进行理论分析和仿真验证,证明该策略的有效性和可行性。Proportional Resonant（PR） regulator is designed to eliminate the steady-state error by increasing the gain of the fundamental frequency, which has been widely used in the current control technology of grid-connected inverter. However, because of the shortcomings of the traditional structured PR regulator, i.e., the effect of different parameters on the gain and phase of the system is not clear and the parameters design is not clear enough either, regulators are difficult to design. A new structure PR regulator with clear structure and simple parameters design is proposed, and the influences of various parameters on the performance of the system are independent from each other. It does not need to set the proportional value to zero to analysis the influence of other parameters on the system. It can realize zero steady-state error when tracking sine reference current, and has good anti interference and harmonic suppression ability. Finally, the theoretical analysis and simulation are made, which verifies the effectiveness and feasibility of the proposed control method for grid-connected inverter system.

关 键 词：传统结构PR调节器 新型结构PR调节器 零稳态误差跟踪 并网逆变器 

分 类 号：TM464[电气工程—电器]