【作者】 谷晓斌；

【导师】 颜湘武；

【作者基本信息】 华北电力大学（河北） ， 电工理论与新技术， 2007， 硕士

【摘要】 针对电压型高频链逆变电源,分析了传统PID控制系统和双闭环控制系统性能不很理想的原因是:PID控制器和双闭环控制器参数设计方法欠佳。为了提高电压型高频链逆变电源的控制性能指标,本文进行了以下研究:利用状态空间理论,建立了单相、三相电压型高频链逆变电源时域的数学模型;对于单相电压型高频链逆变电源设计了基于极点配置技术的PID控制器(PAPID)和双闭环控制器;分析了PAPID控制的单相电压型高频链逆变电源的鲁棒性和死区效应的影响;针对双闭环控制的单相、三相电压型高频链逆变电源的自限流功能进行了探讨;对三相电压型高频链逆变电源的直流电容电压偏差产生的原因进行了分析,提出采用带电压偏差前馈补偿控制的双闭环控制策略,来抑制直流电容电压偏差的产生,防止输出电压波形发生畸变。利用PSIM仿真软件对单相、三相电压型高频链逆变电源在各种负载情况下进行仿真实验,实验结果表明:所提出的基于极点配置的PID控制器和双闭环控制器,能够提高系统的控制性能指标。更多还原

【Abstract】 A voltage-source high-frequency link inverter power supply with single loop PID controller and conventional dual-loop controller usually work not very well. It is dual to the PID controller parameters and the conventional dual-loop controller parameters are not designed very well. The continuous models of the single-phase and three-phase voltage-source high-frequency link inverter power supply are established on uniform state-space theory in the paper. It is designed that the Pole-Assignment PID controller (PAPID) and dual-loop controller on the single-phase voltage-source high-frequency link inverter power supply. It is analyzed that the robustness to the system parameters and the dead zone effect on the PAPID controlled single-phase voltage-source high-frequency link inverter power supply; It is discussed that auto current limiting function on single-phase and three-phase voltage-source high-frequency link inverter power supply dual-loop controller; It is analyzed that the reason for the direct current capacitance voltage deviation on the three-phase voltage-source high-frequency link inverter power supply. It is proposed that the control method of the dual-loop controller with voltage deviation feedforward compensation. The control method can reject the direct current capacitance voltage deviation and prevent the output voltage waveform distortion. The various simulation experiments have been done under the various load conditions with simulation program PSIM. It is shown that the proposed Pole-Assignment PID controller and dual-loop controller can improve the performances of the voltage-source high-frequency link inverter power supply.更多还原