Design and Simulation of Synchronization Control for a Dual-Output Forward Converter

Abstract:

Since high utilization and high output efficiency of forward converter transformer, it is often used in multiple-output DC voltage occasions. But the cross regulation in multiple outputs has affected the performance of forward converter. For this problem, a synchronization control model for a dual-output forward converter is proposed in this paper. That is, the master output is identified by calculating the desired power of dual outputs, and the other is the slave. Then it controls duty cycle of primary switch and master rectifying switch by employing closed-loop PID voltage-mode control. Simultaneously, it is to control duty cycle of rectifying switch in the slave by comparing sampled voltage with desired voltage. Simulation results demonstrate that cross-regulation problems can be solved effectively by this control method, and get a higher voltage accuracy of master output and slave output.

• Periodical: Applied Mechanics and Materials (Volume 574)
• Pages: 517-522
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.574.517
• Online since: July 2014
• Authors: Hong Li Cheng*, Jun Xia, Yun Feng Ni
• Keywords: Cross Regulation, Forward Converter, Multiple-Output, Synchronization Control

References

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