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功率解耦型无电解电容PFC电路并联补偿控制

更新时间:2020-10-27 21:39:28 大小:4M 上传用户:gsy幸运查看TA发布的资源 标签:电解电容pfc 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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提出了一种并联补偿控制策略,应用于功率解耦型无电解电容功率因数校正(PFC)电路,实现了去除电解电容、提高使用寿命和可靠性的目的。首先以升压型双向Buck/Boost变换器作为功率解耦电路,提出了基于固定占空比的并联补偿控制策略,并对其补偿特性进行了分析。而后在定占空比控制策略基础上提出了一种并联补偿控制策略,该控制策略相比较于传统的控制策略,结构简单、实现容易,而且响应速度快,系统调整时间短,负载电压纹波对负载功率变化不敏感,可实现无传感器的低成本功率解耦。为了进一步减小功率器件耐压,将降压型双向Buck/Boost变换器引入功率解耦方案,应用该文所提出的控制策略进行控制,同样实现了PFC电路去除电解电容的目的。最后对该文所提出的并联补偿控制策略进行仿真和实验研究,结果验证了该控制策略的有效性。

A new parallel compensation control strategy is proposed in this paper,which is applied to the power decoupled PFC without electrolytic capacitor and realizes the purpose of improving the service life and reliability of the this paper,Boost-type bidirectional Buck/Boost converter is regarded as the power decoupling circuit parallel compensation control strategy based on fixed duty cycle is proposed and its compensation characteristics are then a new type of parallel compensation control strategy is proposed on the basis of fixed duty ratio control pared with the traditional control strategy,the new control strategy has simple structure,easy implementation,fast response speed,short system adjustment time,the load voltage ripple is not sensitive to changes in load power,and realizes sensorless and low cost power order to further reduce the withstanding voltage value of devices,the Buck-type bidirectional Buck/Boost converter is introduced in power decoupling scheme,which also realized the purpose of removal of electrolytic capacitor from PFC circuit,under the control of the new strategy proposed in this ally,the simulation and experimental study of the new parallel compensation control strategy are performed to verify the validity of the proposed scheme.

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功率解耦型无电解电容PFC电路并联补偿控制.pdf 4M

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