Optimization of An EV Controller Design For A Three Wheeler BOVs - EMC Approach
To be published on November 21, 2019 by SAE International in United States
Event: NuGen Summit
Introduction: The advent of electric mobility is changing the conventional mobility techniques and their application in automobiles across all segments. Three wheeler Battery Operated Vehicles (BoVs) are a special category of electric vehicles (EVs) as far as EMC compliance is concerned. The problem mainly lies with the open body design and cost cutting measures being exercised by the manufactures which makes Electromagnetic compatibility (EMC) compliance challenging. Objective: Though it is sometimes possible to resolve EMC malfunctions related to motor power cable, cables & wiring harness etc. using external techniques post design stage, but controller being a closed and typical element makes it difficult to improve against EMC malfunctions using external techniques. This paper would concentrate on the controller design parameters and improvement of the same in terms of Electromagnetic compatibility (EMC) and performance efficiency at the design stage itself. Methodology: This study would concentrate on designing of motor controller for three wheeler EVs, improving and optimizing the EMI/EMC aspects of the design and its performance with the following aspects in mind: 1. Selection of critical electronic components 2. Components layout and packaging 3. Grounding, Shielding 4. Enclosure/casing designing 5. Micro processor 6. Power supply of motor controller Results: As an outcome, we would like to propose a simple and robust design of EV controller for three-wheeler BoVs. Innovation: These parameters have to be adopted using a system level approach while designing the circuitry. While designing an EV motor controller, all these aspects and parameters have to be taken care of.