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CHEN Sheng,CHEN Dao-lian.Research on Paralleled Flyback Type AC-AC Converters with High Frequency Link[J].JOURNAL OF POWER SUPPLY,2011,9(2):24-28,50
Research on Paralleled Flyback Type AC-AC Converters with High Frequency Link
Received:January 03, 2011  Revised:January 10, 2011
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DOI:10.13234/j.issn.2095-2805.2011.2.24
Keywords:flyback type  AC-AC converter  high frequency link  master-slave mode parallel control
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CHEN Sheng College of Electrical Engineering and Automation, Fuzhou University chensheng402@yahoo.com.cn
CHEN Dao-lian College of Electrical Engineering and Automation, Fuzhou University
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Abstract:
      Aiming at the small capacity of flyback type AC-AC converter with high frequency link,a master-slave mode parallel control method is proposed.Transient output voltage feedback is adopted for the outer control loop.The average inductance currents of secondary winding of every converter are sampled for the inner loop to be the average currents,which is used to control the slave converters and ensure the current of secondary winding of slaves equate to the master for current-sharing accomplishment.Taking a two-module parallel for example,its simulation results are given.The results indicate that the paralleled system has some advantages,such as strong adaptability to various loads,better voltage regulation and current-sharing,stable output voltage and rapid dynamic response.This kind of parallel controlling strategy will lay a strong technology foundation for the converters application in higher power capacity conversion.
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