TY - JOUR
T1 - Carrier-based Generalized Discontinuous PWM Strategy for Single-Phase Three-Legs Active Power Decoupling Converters
AU - Xu, Junzhong
AU - Soeiro, Thiago Batista
AU - Gao, Fei
AU - Tang, Houjun
AU - Bauer, Pavol
PY - 2021
Y1 - 2021
N2 - Three-legs active power decoupling (APD) converters are widely studied in the single-phase grid-connected systems to enhance the circuit lifetime by creating an alternative path for the typical existing dc-side power pulsating ripple. Therefore, this reduces the requirement of smoothing dc capacitors allowing compact designs even with the implementation of long life metalized film technology. In this article, to allow enhancement of the system power density by improving power conversion efficiency and thus reducing the requirement of thermal management of the semiconductors, a carrier-based generalized discontinuous PWM strategy is proposed. This method detects the converter ac currents and ac reference voltages to determine the optimum clamped duration in each one of the three bridge-legs, which will minimize the converter overall switching losses. The proposed modulation method is analyzed and validated on a PLECS simulation and a 2 kVA single-phase three-legs APD converter.
AB - Three-legs active power decoupling (APD) converters are widely studied in the single-phase grid-connected systems to enhance the circuit lifetime by creating an alternative path for the typical existing dc-side power pulsating ripple. Therefore, this reduces the requirement of smoothing dc capacitors allowing compact designs even with the implementation of long life metalized film technology. In this article, to allow enhancement of the system power density by improving power conversion efficiency and thus reducing the requirement of thermal management of the semiconductors, a carrier-based generalized discontinuous PWM strategy is proposed. This method detects the converter ac currents and ac reference voltages to determine the optimum clamped duration in each one of the three bridge-legs, which will minimize the converter overall switching losses. The proposed modulation method is analyzed and validated on a PLECS simulation and a 2 kVA single-phase three-legs APD converter.
KW - Active power decoupling (APD)
KW - discontinuous pulsewidth modulation (DPWM)
KW - single-phase
UR - http://www.scopus.com/inward/record.url?scp=85096879559&partnerID=8YFLogxK
U2 - 10.1109/TIE.2020.3038099
DO - 10.1109/TIE.2020.3038099
M3 - Article
AN - SCOPUS:85096879559
SN - 0278-0046
VL - 68
SP - 11609
EP - 11613
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 11
M1 - 9264683
ER -