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基于状态空间模型的双Buck逆变器复合控制
The Research of Compound Control Method for Dual-Buck Inverter Based on State Space model
投稿时间:2018-06-14  修订日期:2018-09-03
DOI:
中文关键词:  双Buck逆变器  重复控制  状态空间模型
英文关键词:double buck inverter  repeat control  state space model
基金项目:福建省自然科学基金(2016J05154);福建省教育厅科技项目(JAT160067)
作者单位E-mail
张旗 福州大学 470794597@qq.com 
蔡逢煌 福州大学 149084905@qq.com 
王群兴 福州大学 361295282@qq.com 
苗中磊 福州大学 1154129604@qq.com 
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中文摘要:
      双Buck逆变器由于无桥臂直通、可靠性好等优点而被广泛应用,然而当负载突变时输出波形质量较差。本文在建立逆变器控制系统状态空间模型的基础上,引入了电流内环PI控制、电压外环重复控制的复合控制策略。电流内环PI控制,可实现系统快速动态响应,解决负载突增输出电压跌落问题;电压外环重复控制提高系统稳态精度。相比传统PI双闭环控制,该复合控制策略下系统可实现无静态误差,有效提高控制精度及输出波形质量,增强了抗负载突变扰动能力。仿真与实验结果验证了该方法的有效性及可行性。
英文摘要:
      Dual-Buck inverter is widely used because of no bridge straight through arm and good reliability, however, when the load is abrupt, the waveform is output with poor quality. In this paper, a combined control strategy with the inner current loop using PI controller and the outer voltage loop using repetitive controller is proposed, based on the state space model of the inverter control system. The inner current loop using PI controller can realize rapid dynamic response of the system, and solve output voltage drop cause by sudden load increase; the outer voltage loop using repetitive controller improved the system steady-state accuracy. Compared with the traditional PI double closed-loop controller, it is shown that the system can realize zero steady-state error and improve the control accuracy and output waveform quality effectively, and enhance the capability of anti-load mutation disturbance. Simulation and experimental results verify the effectiveness and feasibility of the proposed method.
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