| 引用本文: | 李龙,刘重阳,贲洪奇.基于神经元PI控制的PWM整流器动态特性研究[J].电力系统保护与控制,2013,41(11):124-128.[点击复制] |
| LI Long,LIU Chong-yang,BEN Hong-qi.Research of the dynamic characteristics of the PWM converter based on neurons PI control[J].Power System Protection and Control,2013,41(11):124-128[点击复制] |
|
| 摘要: |
| 针对传统PI控制下的三相PWM整流器电压外环动态性能和抗负载扰动能力较差的缺点，利用根轨迹分析了三相PWM整流器在PI控制下的稳定条件和PI参数对系统性能的影响。基于以上分析，在电压外环控制器的设计过程中，引入了结合单神经元和专家系统的一种智能型PI控制方法，根据系统的运行状态对电压外环调节器的结构和参数进行实时调整，以提高PWM整流器的动态特性和抗扰性。仿真和实验结果表明：这种智能型PI控制下的PWM整流器，在相同负载变化时，响应速度快、超调量小，动态性能指标优越、鲁棒性强，而且算法设计简单、易于实现。 |
| 关键词: PWM 整流器 神经元 PI控制 动态特性 |
| DOI：10.7667/j.issn.1674-3415.2013.11.020 |
|
| 基金项目: |
|
| Research of the dynamic characteristics of the PWM converter based on neurons PI control |
| LI Long,LIU Chong-yang,BEN Hong-qi |
| () |
| Abstract: |
| Aimed at the poor behavior of the dynamic characteristics and the anti-jamming ability of the three-phase PWM converter under traditional PI control, the steady analysis of the three-phase PWM converter under PI control and the influence on the system properties of the PI parameters are conducted employing the root locus. On this basis, a smart PI control method combining the single-neurons and expert system has been applied to the outer-voltage-loop control. The parameters of the outer-voltage-loop controller are regulated online to improve the behavior of the system. Simulations and experimental results verify that the proposed strategy has quick response and small overshoot when the same load changes, the dynamic performance shows excellent index and strong robustness, and the calculation is simple. |
| Key words: pulse width modulation rectifiers neurons PI control dynamic characteristics |
