TY - GEN
T1 - Phase-shedding control scheme for wide voltage range operation of extended-duty-ratio boost converter
AU - Gupta, Ankul
AU - Ayyanar, Raja
AU - Chakraborty, Sombuddha
N1 - Funding Information:
VII. ACKNOWLEDGMENT This work was supported in part by Semiconductor Research Corporation (SRC)-Global Research Collaboration.
Publisher Copyright:
© 2021 IEEE.
PY - 2021/6/14
Y1 - 2021/6/14
N2 - In this paper, a phase shedding control scheme for extended-duty-ratio (EDR) boost converter is proposed to achieve wide input and output voltage range operation of the converter. EDR converters can achieve very high gain, for example above 20 for a 4-phase converter, but have limitations on the lowest allowable gain. The proposed scheme allows operation at gain as low as unity while retaining the main benefits of EDR boost such as low voltage stress across switches. The phase shedding control can be optimized based on the application requirements. In this paper, the phase shedding control is optimized for low device voltage stress over wide input and output voltage range operation. The converter control implementation is discussed in detail. The control scheme is verified with a 4-phase EDR boost converter with input voltage varying between 20 V-40 V and output voltage ranging between 50 V-400 V. Experimental results of closed loop operation with adaptive PI controller are presented and the phase shedding scheme is verified by showing the transition from one configuration to another based on the converters varying gain.
AB - In this paper, a phase shedding control scheme for extended-duty-ratio (EDR) boost converter is proposed to achieve wide input and output voltage range operation of the converter. EDR converters can achieve very high gain, for example above 20 for a 4-phase converter, but have limitations on the lowest allowable gain. The proposed scheme allows operation at gain as low as unity while retaining the main benefits of EDR boost such as low voltage stress across switches. The phase shedding control can be optimized based on the application requirements. In this paper, the phase shedding control is optimized for low device voltage stress over wide input and output voltage range operation. The converter control implementation is discussed in detail. The control scheme is verified with a 4-phase EDR boost converter with input voltage varying between 20 V-40 V and output voltage ranging between 50 V-400 V. Experimental results of closed loop operation with adaptive PI controller are presented and the phase shedding scheme is verified by showing the transition from one configuration to another based on the converters varying gain.
KW - EDR boost
KW - Extended gain range
KW - High-voltage gain
KW - Interleaved boost
KW - Phase shedding
KW - Wide range of voltage gain
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U2 - 10.1109/APEC42165.2021.9487308
DO - 10.1109/APEC42165.2021.9487308
M3 - Conference contribution
AN - SCOPUS:85115719300
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 494
EP - 499
BT - 2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021
Y2 - 14 June 2021 through 17 June 2021
ER -