Carrier-based Generalized Discontinuous PWM Strategy for Single-Phase Three-Legs Active Power Decoupling Converters

Carrier-based Generalized Discontinuous PWM Strategy for Single-Phase Three-Legs Active Power Decoupling Converters

Xu, J. (Shanghai Jiao Tong University; Ministry of Education)
Soeiro, Thiago B. (TU Delft DC systems, Energy conversion & Storage)
Gao, Fei (Shanghai Jiao Tong University; Ministry of Education)
Tang, Houjun (Shanghai Jiao Tong University; Ministry of Education)
Bauer, P. (TU Delft DC systems, Energy conversion & Storage)

2021

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.

Active power decoupling (APD)
discontinuous pulsewidth modulation (DPWM)
single-phase

http://resolver.tudelft.nl/uuid:9d056d82-4134-40ef-9908-b01ec75b0649

https://doi.org/10.1109/TIE.2020.3038099

0278-0046

IEEE Transactions on Industrial Electronics, 68 (11), 11609-11613

Institutional Repository

journal article

© 2021 J. Xu, Thiago B. Soeiro, Fei Gao, Houjun Tang, P. Bauer