TY - JOUR
T1 - PWM control of dual active bridge
T2 - Comprehensive analysis and experimental verification
AU - Jain, Amit Kumar
AU - Ayyanar, Raja
N1 - Funding Information:
Manuscript received March 22, 2010; revised May 25, 2010 and August 5, 2010; accepted August 6, 2010. Date of current version June 10, 2011. This work was supported by the Office of Naval Research under Contract # N00014-07-M-0041. Recommended for publication by Associate Editor R. Burgos. A. K. Jain is with the Peregrine Power LLC, Wilsonville, OR 97008 USA (e-mail: amit_k_jain@ieee.org). R. Ayyanar is with the Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287 USA (e-mail: rayyanar@asu.edu). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TPEL.2010.2070519
PY - 2011
Y1 - 2011
N2 - The dual-active-bridge (DAB) topology is ideally suited for high-power dc-dc conversion, especially when bidirectional power transfer is required. However, it has the drawback of high circulating currents and hard switching at light loads, if wide variation in input and output is expected. To address these issues, this paper presents a comprehensive analysis and experimental results with pulsewidth-modulation (PWM) control of the DAB. The PWM control is in addition to phase-shift modulation between the two H-bridges. The analysis addresses PWM of one bridge at a time and of both bridges simultaneously. In the latter, five distinct modes arise based on the choice of PWM and load condition. The possibilities are analyzed for optimizing power density and efficiency for low-load operation. Finally, a composite scheme combining single and dual PWM is proposed that extends the soft-switching range down to zero-load condition, reduces rms and peak currents, and results in significant size reduction of the transformer. Experimental results are presented with a 10-kW prototype.
AB - The dual-active-bridge (DAB) topology is ideally suited for high-power dc-dc conversion, especially when bidirectional power transfer is required. However, it has the drawback of high circulating currents and hard switching at light loads, if wide variation in input and output is expected. To address these issues, this paper presents a comprehensive analysis and experimental results with pulsewidth-modulation (PWM) control of the DAB. The PWM control is in addition to phase-shift modulation between the two H-bridges. The analysis addresses PWM of one bridge at a time and of both bridges simultaneously. In the latter, five distinct modes arise based on the choice of PWM and load condition. The possibilities are analyzed for optimizing power density and efficiency for low-load operation. Finally, a composite scheme combining single and dual PWM is proposed that extends the soft-switching range down to zero-load condition, reduces rms and peak currents, and results in significant size reduction of the transformer. Experimental results are presented with a 10-kW prototype.
KW - Bidirectional converters
KW - dc-dc conversion
KW - pulsewidth modulation (PWM)
KW - soft switching
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U2 - 10.1109/TPEL.2010.2070519
DO - 10.1109/TPEL.2010.2070519
M3 - Article
AN - SCOPUS:79958862742
SN - 0885-8993
VL - 26
SP - 1215
EP - 1227
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
IS - 4
M1 - 5559483
ER -