NDLI: A high resolution digital phase-shift modulation scheme for ultra-high frequency dual active bridge converters

Content Provider	IEEE Xplore Digital Library
Author	Yu Du Huang, A.Q.
Copyright Year	2012
Description	Author affiliation: FREEDM Systems Center, ECE Department, North Carolina State University, Raleigh, 27606, U.S.A. (Huang, A.Q.) \|\| ABB Corporate Research, 940 Main Campus Drive, Suite 200, Raleigh, NC 27606, U.S.A. (Yu Du)
Abstract	The conventional digital PWM modules satisfy the resolution requirement of the phase-shift modulation signals for the dual active bridge type converters when the switching frequency is smaller than 25kHz. However, at ultra high frequency the resolution is too low to control the converter. A high resolution digital phase-shift modulation scheme to improve the resolution of the phase-shift angle by a factor around 50 is proposed for a 500kHz dual active bridge type converter. The implementation issues such as the micro-edge positioning and deadtime generation are discussed. The experimental measurement of the gate signal time change with different input angles verifies the high resolution of the phase-shift angle with the proposed scheme. When the maximum phase-shift angle is 30°, a resolution of 0.09% is obtained and the closed-loop digital control with presented high resolution modulation scheme is validated in a 500kHz prototype.
Starting Page	1684
Ending Page	1691
File Size	714791
Page Count	8
File Format	PDF
ISBN	9781467308021
e-ISBN	9781467308038
e-ISBN	9781467308014
DOI	10.1109/ECCE.2012.6342610
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency modulation Phase modulation Switching frequency Bridge circuits Pulse width modulation Signal resolution Clocks
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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