| Title |
Performance Analysis of Modulation Strategies for Inter-Module Power Routing in Cascaded H-Bridge Converters |
| Authors |
김민솔(Min-Sol Kim) ; 음두호(Duho Eum) ; 고영종(Youngjong Ko) |
| DOI |
https://doi.org/10.5370/KIEE.2025.74.12.2218 |
| Keywords |
Cascaded H-bridge converter; Power Imbalance; Power Routing; Modulation Schemes; Total Harmonic Distortion |
| Abstract |
With the growing integration of distributed energy resources (DERs), energy storage systems (ESSs) and advanced power converters have become essential for maintaining power quality and system reliability. The Cascaded H-Bridge (CHB) multilevel converter, in particular, offers advantages such as modularity, flexible power scaling, and high-quality output. Representative modulation methods applied to CHB inverters include Sinusoidal PWM (SPWM), Third Harmonic Injection PWM (THIPWM), and Discontinuous PWM (DPWM). These methods exhibit different performance characteristics in terms of voltage utilization, switching loss, and current ripple, and such differences become more pronounced under power imbalance conditions. This paper compares three modulation methods in terms of power control and validates their performance through analysis and experimental verification. |