A Comprehensive Steady-State Analysis for Modular Multi-Parallel Rectifiers (MMR) With Shared DC-Link

This article proposes a comprehensive steady-state analysis for a front-end Modular Multi-Parallel Rectifiers (MMR) system with a shared DC-link. A generalised mathematical representation for an n-number of parallel rectifiers is proposed. The MMR is analysed for both Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). In addition, the CCM and DCM boundary of the MMR is identified mathematically. The impact of parasitic elements on the mode of operations is studied. In addition, the impact of different ASD scenarios on the mode of operation is studied. A 200 W Simulink model for the MMR is utilised to confirm the proposed steady-state mathematical modelling equations. A 200 W practical setup is implemented in a laboratory to validate the proposed mathematical equations.