Work

Mitigating Common Mode Current in Chain Energy Storage Inverters With Novel Approach

Year: 2025

Type: article

Abstract: The chain energy storage converter, a type of multilevel converter, exhibits characteristics such as multi-modularization, easy scalability, and low harmonic voltage output, rendering it suitable for medium to high voltage and large capacity energy storage systems. However, the large volume of battery cabinets in large-scale energy storage systems introduces parasitic parameters into the cascaded H-bridge converter, leading to significant common-mode current during switching operations. This paper presents a novel suppression scheme for the chain energy storage inverter's common-mode current. The proposed approach incorporates symmetrical filter inductors and one-dimensional vector modulation to minimize common-mode current and voltage. Simulations conducted in MATLAB/Simulink confirm the effectiveness of the proposed strategy, showcasing substantial reductions in common-mode current and improved compliance with grid specifications.

Source: IEEE Open Journal of Power Electronics

DOI: 10.1109/ojpel.2025.3639411

Authors: Qinglei Zhang, Waseem Ahmad, Kamran Javed, Ali Raza

Institutions: Shanghai Maritime University, Pak-Austria Fachhochschule: Institute of Applied Sciences and Technology, Hamad bin Khalifa University

Language: English

Topic: Multilevel Inverters and Converters

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,075