Real-Time Emulation of a MMC with BESS for EV Application

Abstract

A real-time emulation of a modular multilevel converter with integrated energy storage devices has been carried out. The real-time model is detailed and implemented using MicroLabBox/dSPACE. The system is tested and compared to an experimental prototype of the converter. The main advantage of the proposed real-time system is that it gives higher fidelity for further investigations, specifically in electric vehicle applications where it can be integrated into a real-time emulated electric vehicle. The model can be extended to a higher number of levels as it has no constraints on the number of switches or batteries/cells. Also, it can be integrated in a power hardware in the loop system to decrease the testing time of a product. This is a novel proposal of a real-time emulation of the converter in an electric vehicle application using MicroLabBox/dSPACE.

Real-time emulation of a PMSM-loaded MMC with BESS

“…The dynamic model of the converter here is fully detailed in [19]. The equivalent circuit of a three phase MMC converter is shown in Fig.…”

“…A full account of this test is provided in [19], and summarised here. Table 2 details the converter and the RL load parameters.…”

“…Another study proposed the realtime operation of the MMC-BESS using the state space model of the converter and a lookup table method [18]. The study was presented concurrently with the preliminary results of the work presented in this manuscript [19]. The current work features a modular and generic sorting algorithm that is easily extendable and is based on logic sorting rather than a PI controller as proposed in [18].…”

“…The current work features a modular and generic sorting algorithm that is easily extendable and is based on logic sorting rather than a PI controller as proposed in [18]. The real-time emulation in this paper, is a novel implementation of a CHIL emulation of a MMC-BESS and an extension of our work presented in [19], to validate motor real-time operation compared to a prototype MMC-BESS. In this research, MicroLabBox/dSPACE is used as the emulation platform of the MMC-BESS control and motor dynamics.…”