Research

Retired electric-vehicle batteries retain substantial capacity but are heterogeneous in health, chemistry, and voltage. This work covers power conversion architectures and state-of-charge balancing that tolerate that spread, plus the screening and thermal-safety questions that decide whether a second-life pack is deployable at all.

1. Dual-Stage MPC for SoC Balancing in Second-Life Battery Energy Storage Systems Based on Delta-Connected Cascaded H-Bridge Converters · IEEE Transactions on Power Electronics, 2025
2. A Review of Thermal Safety and Management of Second-Life Batteries: Cell Screening, Pack Configuration and Health Estimation · Batteries, 2026
3. LQG Current Control Strategy for a CHB Converter-Based Second-Life Battery Energy Storage System without Steady-State Error · 2024 IEEE 34th Australasian Universities Power Engineering Conference (AUPEC), 2024
4. A Seamless Battery Module Swapping Strategy Under Load for Critical Energy Storage Systems · IEEE Transactions on Power Electronics, 2026

Converters with hundreds of submodules need a voltage sensor per submodule, which dominates cost and failure rate. Extended Kalman filters, distributed neural network observers, and harmonic compensators can reconstruct those states from far fewer measurements, cutting hardware cost without losing control quality.

1. Extended Kalman Filtering for Full-State Estimation and Sensor Reduction in Modular Multilevel Converters · IEEE Transactions on Industrial Electronics, 2023
2. Distributed Neural Network Observer for Submodule Capacitor Voltage Estimation in Modular Multilevel Converters · IEEE Transactions on Power Electronics, 2022
3. Offset-Free Optimal Control of Cascaded H-Bridge Converters Based on a Kalman Filter Harmonic Compensator · IEEE Transactions on Power Electronics, 2025
4. Denoising and Voltage Estimation in Modular Multilevel Converters Using Deep Neural-Networks · IEEE Access, 2020

Finite-control-set and sequential model predictive control strategies for modular multilevel, cascaded H-bridge, and matrix converters. The recurring problem is computational load: an exhaustive search over switching states is intractable at useful horizons, so the work develops sequential and long-horizon formulations that keep performance while staying implementable on real hardware.

1. Sequential Phase-Shifted Model Predictive Control for Modular Multilevel Converters · IEEE Transactions on Energy Conversion, 2021
2. Long-Horizon Sequential FCS-MPC Approaches for Modular Multilevel Matrix Converters · IEEE Transactions on Industrial Electronics, 2024
3. Computationally Efficient MPC for Modular Multilevel Matrix Converters Operating With Fixed Switching Frequency · IEEE Open Journal of the Industrial Electronics Society, 2023
4. Closed-Loop Performance Improvement for MMCs Based on Optimal Reference Governor · 2021 IEEE 12th Energy Conversion Congress Exposition - Asia (ECCE-Asia), 2021

Phase-shifted PWM variants (variable-angle, interphase-angle, and feed-forward natural sampling) that improve harmonic performance and handle unbalanced cell operation in cascaded H-bridge converters.

1. Predictive Optimal Variable-Angle PS-PWM Strategy for Cascaded H-Bridge Converters · IEEE Transactions on Industrial Electronics, 2024
2. A Variable-Angle PSC-PWM With Interphase Angles for Three-Phase CHB Converters With Unbalanced Cell Operation · IEEE Transactions on Industrial Electronics, 2025
3. Generalized Feed-Forward Sampling Method for Multilevel Cascaded H-Bridge Converters · IEEE Transactions on Industrial Electronics, 2024
4. Feed-Forward Technique to Emulate Natural Sampling Method for Cascaded H-Bridge Converters · IECON 2023- 49th Annual Conference of the IEEE Industrial Electronics Society, 2023

I supervise research students at UNSW and welcome collaboration on converter control, state estimation, and storage integration. Get in touch through the contact form.