引用本文: | 任鹏飞,耿世勇.基于H∞和L2干扰抑制的PWM整流器双闭环控制[J].电力系统保护与控制,2018,46(9):43-48.[点击复制] |
REN Pengfei,GENG Shiyong.Double closed-loop control of PWM rectifier based on H∞ and L2 disturbance suppression[J].Power System Protection and Control,2018,46(9):43-48[点击复制] |
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摘要: |
为了解决模型不确定和外部干扰对PWM整流器稳定控制的影响,提出了基于H∞和非线性L2干扰抑制控制的双闭环控制方法。电压外环以电压偏差和功率偏差构建布鲁诺夫斯基标准型,基于目标全息控制方法,得出了线性最优控制解。电流内环采用非线性L2增益控制方式,有效抑制了由模型参数不确定和外部干扰对大范围运行稳定性的影响。仿真验证和实验结果表明:相对于传统的比例积分控制方法,新的控制方法可以明显加快整流输出电压的稳定速度和单位功率因数的电流跟踪能力,对于提高PWM整流器动态稳定控制能力具有重要意义。 |
关键词: H∞控制 L2干扰抑制 电压源PWM整流器 双闭环控制 |
DOI:10.7667/PSPC170586 |
投稿时间:2017-04-21修订日期:2017-06-13 |
基金项目:国家自然科学基金项目(51407035);河南省高等学校重点科研项目(17A470007) |
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Double closed-loop control of PWM rectifier based on H∞ and L2 disturbance suppression |
REN Pengfei,GENG Shiyong |
(College of Electrical Information and Engineering, Henan Institute of Engineering, Zhengzhou 451191, China;School of Electric and Information Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China) |
Abstract: |
To reduce the influence on the stability control of the PWM rectifier caused by model uncertainty and external interference, a new double closed-loop control method based on H∞ and nonlinear L2 disturbance suppression is proposed. In the voltage outer control loop, Bruno-standard linear equation is established based on voltage derivation and power derivation, andthe linear optimal control solution is obtained based on objective holographic feedbacks. In the current inner control loop, the nonlinear L2-gain control method is used, which effectively restrains the influence on the wide-range operation stability due to aforementioned reasons. Simulation and experiment results show that the new control method can quicken the stability speed of rectifier output voltage and current tracking ability of unity power factor significantly compared with traditional proportional integral control method, which is important to improve the dynamic stable and control ability of PWM rectifier. This work is supported by National Nature Science Foundation of China (No. 51407035) and Key Science and Research Program of Henan Higher Education (No. 17A470007). |
Key words: H∞ control L2 disturbance attenuation voltage sourced PWM rectifier double closed-loop control |