Multiloop Control with Two Duty-Ratio Feedforward Current Loops Via Sensing Series-Capacitor Current for Voltage Doubler PFC Converter

In this paper, the voltage doubler PFC converter with two boost inductors and one series-capacitor is studied. Only when both symmetrical duty ratios are larger than 0.5, the conventional multiloop control with one inner current loop and one voltage loop can be directly applied to the voltage double...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2023-11, Vol.70 (11), p.1-9
Main Authors: Chen, Hung-Chi, Lan, Yin-Chun
Format: Article
Language:English
Subjects:
Capacitors
Control systems
current reconstruction
Feedforward control
Field programmable gate arrays
Inductors
multiloop control
Switches
Switching circuits
Topology
Voltage
Voltage control
voltage doubler PFC converter
Voltage doublers
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Summary:In this paper, the voltage doubler PFC converter with two boost inductors and one series-capacitor is studied. Only when both symmetrical duty ratios are larger than 0.5, the conventional multiloop control with one inner current loop and one voltage loop can be directly applied to the voltage doubler PFC converter due to its topology asymmetry. To remove this duty-ratio limit, the multiloop control with two duty-ratio feedforward current loops is proposed where the series-capacitor current is sensed to reconstruct two inductor currents. It follows that the number of sensor in the proposed control is three equal to the number of sensor in the conventional multiloop control. The proposed method is implemented in a Field Programmable Gate Array (FPGA) chip. The provided simulation and experimental results validate the effectiveness.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2022.3225864