Stabilizing the Boost PFC Converter with a Time Delay Feedback Controller
Stabilizing the Boost PFC Converter with a Time Delay Feedback Controller
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DOI：
10.3390/electronics12102291
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发表时间：
2023-05
期刊：
影响因子：
2.9
通讯作者：
Rui Zhang;Jie Dong;Lei Wang;Wei Ma;Guofu Yin
中科院分区：
文献类型：
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作者：
Rui Zhang;Jie Dong;Lei Wang;Wei Ma;Guofu Yin
单周控制升压型功率因数校正变换器只有一个电压控制回路，当负载较轻时可能会出现不稳定。不稳定性导致低功率因数。为了保证功率因数高，本文采用延时电路来控制变换器的不稳定性。描述了延时电路的结构，推导了延时电路的传递函数。将双平均法应用于变换器中，以确定控制方法中的参数。实验结果验证了延时控制方法在变换器中的有效性。在激活延迟控制电路之后，功率因数从0.82增加到0.99。
The One-Cycle Controlled Boost Power Factor Correction converter has one voltage control loop, which may exhibit instability when the load is light. The instability results in a low Power Factor. To ensure that the Power Factor is high, a time delay circuit was adopted in this paper to control the instability of the converter. The architecture of the time delay circuit is described, and its transfer function is derived. The double averaging method was applied to the converter to determine the parameters in the control method. Experimental results verified the time delay control method in the converter. The power factor increased from 0.82 to 0.99 after activating the delay control circuit.