BoostPFC变换器电压环参数动态调节控制方法

By dynamically adjusting the voltage loop parameters of the Boost PFC converter, the problem of insufficient dynamic response capability in the voltage loop control strategy is solved, the dynamic response speed and steady-state performance of the system are improved, and the bus voltage fluctuation and current harmonic distortion are reduced.

CN117134606BActive Publication Date: 2026-07-17HARBIN INST OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2023-07-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The voltage loop control strategy of existing Boost PFC converters has insufficient dynamic response capability, resulting in bus voltage fluctuations and current harmonic distortion, which affects system stability and dynamic response speed.

Method used

By dynamically adjusting the voltage loop parameters of the Boost PFC converter, the proportional and integral coefficients of the voltage loop PI controller are adjusted according to the bus voltage error and system state, thereby achieving dynamic adjustment of the voltage loop parameters and improving the dynamic response speed and steady-state performance of the system.

Benefits of technology

It improves the dynamic response speed of the Boost PFC converter, reduces bus voltage fluctuations and current harmonic distortion, and enhances the stability and robustness of the system.

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Abstract

一种Boost PFC变换器电压环参数动态调节控制方法,属于电机控制技术领域。本发明针对现有Boost PFC变换器的传统控制方法存在的动态响应能力不足的问题。包括一:根据母线电压波动和电网电流谐波约束,提出关于母线电压波动和系统固有频率的饱和函数;二:根据系统的调整时间ts、网侧电流THD以及稳态条件下直流母线电压纹波最大值Uripple等性能指标去设计系统阻尼比ξ以及固有频率ωn的范围;三:根据母线电压误差信号是否小于稳态条件下直流母线电压纹波最大值Uripple,判断系统是处于稳态还是动态响应过程,动态调节电压环PI参数以满足性能指标。本发明用于Boost PFC变换器的控制。
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