TY - JOUR
T1 - A Coupled-Inductor-Based Bidirectional DC-DC Converter With High Voltage Conversion Ratio and Sensorless Current Balance
AU - Hu, Renjun
AU - Qi, Haixia
AU - Yan, Zhixing
AU - Wu, Weibin
AU - Zeng, Jun
AU - Liu, Junfeng
N1 - Publisher Copyright:
© 1982-2012 IEEE.
PY - 2023/3/1
Y1 - 2023/3/1
N2 - In this article, a coupled-inductor (CI)-based bidirectional dc-dc converter with a high voltage conversion ratio (VCR) and low voltage stress is proposed. The topology can achieve high VCR by employing two CIs; moreover, the interleaved technique overcomes the defect of large current ripple in CI. A sensorless current balance between the two CIs is also realized without an auxiliary circuit and complex control method. The pulsewidth modulation plus phase-shift control is employed, where the duty cycle D is used to adjust the VCR, and the phase-shift angle φ is used to control the direction and amount of the transferred power. In addition, all switches can achieve soft-switching under a wide operation range. The steady-state analysis of the proposed converter is analyzed in detail, followed by comprehensive experimental verification under a 1-kW prototype.
AB - In this article, a coupled-inductor (CI)-based bidirectional dc-dc converter with a high voltage conversion ratio (VCR) and low voltage stress is proposed. The topology can achieve high VCR by employing two CIs; moreover, the interleaved technique overcomes the defect of large current ripple in CI. A sensorless current balance between the two CIs is also realized without an auxiliary circuit and complex control method. The pulsewidth modulation plus phase-shift control is employed, where the duty cycle D is used to adjust the VCR, and the phase-shift angle φ is used to control the direction and amount of the transferred power. In addition, all switches can achieve soft-switching under a wide operation range. The steady-state analysis of the proposed converter is analyzed in detail, followed by comprehensive experimental verification under a 1-kW prototype.
KW - Coupled-inductor (CI)
KW - high voltage conversion ratio (VCR)
KW - sensorless current balance
KW - wide soft-switching range
UR - http://www.scopus.com/inward/record.url?scp=85132510312&partnerID=8YFLogxK
U2 - 10.1109/TIE.2022.3172770
DO - 10.1109/TIE.2022.3172770
M3 - Journal article
AN - SCOPUS:85132510312
SN - 0278-0046
VL - 70
SP - 2450
EP - 2460
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 3
ER -