TY - JOUR
T1 - Ultra-High Step-Up DC-DC Converters Based on Center-Tapped Inductors
AU - Tarzamni, Hadi
AU - Kurdkandi, Naser Vosoughi
AU - Gohari, Homayon Soltani
AU - Lehtonen, Matti
AU - Husev, Oleksandr
AU - Blaabjerg, Frede
PY - 2021/10
Y1 - 2021/10
N2 - In this paper, a new family of ultra-high step-up DC-DC converters based on a center-tapped coupled inductor (CI) is proposed. These single-switch converters employ different inductive and capacitive power transfer techniques by utilizing multi-winding CIs, intermediate capacitor links and simple switched-capacitors to improve the transferred power rate, harvest magnetizing and leakage inductance energies, and enhance power density. Achieving high voltage gain in low duty cycle values enables the proposed converters to operate under wide output voltage ranges; meanwhile, distributing the output voltage on two or three output ports alleviates the voltage stress on output terminal components. Low input current ripple, simple pulse width modulation control, low switch voltage stress and operation without circulating current can be listed as other features. In this paper, the proposed family is introduced, theoretically analyzed and compared with other state-of-the-art researches. Finally, the accuracy of analyses are evaluated with some experimental tests of a 1.25 kW experimental prototype.
AB - In this paper, a new family of ultra-high step-up DC-DC converters based on a center-tapped coupled inductor (CI) is proposed. These single-switch converters employ different inductive and capacitive power transfer techniques by utilizing multi-winding CIs, intermediate capacitor links and simple switched-capacitors to improve the transferred power rate, harvest magnetizing and leakage inductance energies, and enhance power density. Achieving high voltage gain in low duty cycle values enables the proposed converters to operate under wide output voltage ranges; meanwhile, distributing the output voltage on two or three output ports alleviates the voltage stress on output terminal components. Low input current ripple, simple pulse width modulation control, low switch voltage stress and operation without circulating current can be listed as other features. In this paper, the proposed family is introduced, theoretically analyzed and compared with other state-of-the-art researches. Finally, the accuracy of analyses are evaluated with some experimental tests of a 1.25 kW experimental prototype.
KW - DC-DC converter
KW - high step-up power converter
KW - center-tapped coupled inductor
U2 - 10.1109/ACCESS.2021.3117856
DO - 10.1109/ACCESS.2021.3117856
M3 - Journal article
SN - 2169-3536
VL - 9
SP - 136373
EP - 136383
JO - IEEE Access
JF - IEEE Access
M1 - 9558815
ER -