Executive Summary : | Department of Heavy Industry, GoI launched the scheme “Faster Adoption and Manufacturing of (Hybrid &) Electric Vehicles (FAME)-India” in April 2015 with an aim of achieving national fuel security through e-mobility and an affordable environment-friendly transportation system for the future. The present project aims to design a HESS based electric drivetrain with high power bidirectional DC/DC converters, EMA, 3-level NPC inverter based PMSM traction drive and BMS. The battery has good energy density whereas UC has good power density. So, it has been proposed to combine both to form HESS. Thus UC assists batteries during hard transient states and thereby increases the battery’s capacity and lifespan. It also downsizes the ESS and reduces the power per unit cost. The voltage level and dynamic characteristics of the HESS components are normally different from each other and therefore, DC/DC converters need to be incorporated to coordinate power flow across various units of ESS and load. Hence, a suitable battery/UC configuration would be investigated and a high-power bidirectional DC/DC converter will be designed. Controlling energy flow across HESS is important to improve system efficiency. Energy management deals with the utilization of the available energy of the storage devices within their operational constraints whereas power management deals with harnessing the appropriate power that can suitably be supplied/sink by the energy storage devices. An efficient EMA will be designed to establish the control strategy of the DC/DC converters for controlling the power flow among the battery, UC and the DC-link. Being an electrochemical product, battery characteristics vary widely under different operational and environmental conditions. The purpose of the BMS is to ensure safe and reliable battery operation. It has been proposed to develop a BMS which would ensure safe and healthy battery operation. For traction motor (PMSM), a three-level NPC will be designed since it offers several advantages such as simple structure and improved efficiency over other multilevel inverters. Different modulation and control strategies will be implemented to solve the topology-specific issues such as dc-link capacitor voltage balancing. Suitable closed-loop speed/torque control algorithms will be implemented in the embedded control platform for experimental validation. In order to extend the EVs driving range, PV panels on the rooftop of a vehicle can be used to charge the auxiliary batteries. Among the various MPPT algorithms developed, the Perturb and Observe (P&O) algorithm is widely used, mainly due to its simplicity and ease of implementation however it suffers from drift phenomena. As in the running condition of EVs, the solar irradiation will continuously change, so in this work, a modified P&O algorithm will be implemented which will be suitable for EVs. |
Co-PI: | Dr Asim Kumar Naskar, Assistant Professor, Dr Supratim Gupta, Assistant Professor, National Institute of Technology (NIT), Rourkela, Dr Naresh Chandra Murmu, Principal Scientist, Dr Santu Kumar Giri, Principal Scientist, CSIR-Central Mechanical Engineering Research Institute, West Bengal |
Total Budget (INR): | 1,44,45,200 |
Achievements : | 1. The design of interleaved coupled boost converter has been done.
2. Battery/UC HESS sizing has been done with the ARTEMIS drive cycle.
3. Work on energy management of the battery/UC HESS for an EV drivetrain has been initiated. |
Publications : | 3 |