Energy Management Strategy for Hybrid Energy Storage Systems in Electric Vehicle –A Review

Abstract

On board energy management system for Electric Vehicle (EV) defines the fuel economy and all electric range. Charging and discharging of energy storage devices take place during running as well as stand-still conditions. Battery-alone EV suffers from range anxiety, current drain during peak power demand and less battery life. It depends on the grid for charging and thus the increasing popularity of EV is increasing burden on the grid. Different energy storage devices are available which could be used on board to form a hybrid energy storage system. Batteries, Ultra-capacitors and fuel cells are some of them. Such a system will act as a stress reduction factor and increase the battery life. In this paper, a detail literature review of various energy storage devices that can be used in EV is presented. A comparative study of various topologies available for this purpose is also presented. Finally, a detailed review of Energy Management Strategy (EMS) is presented with current trends and research gaps i.e., challenges.

Energy management strategy for photovoltaic powered hybrid energy storage systems in electric vehicles

“…To increase the output power of the PV system, maximum power point tracking (MPPT) technique is utilized. The output power that relies on 𝐼 𝑀 and 𝑉 𝑀 is identified using (1).…”

“…where, V refers voltage across the block, 𝑁 𝑠𝑒𝑟𝑖𝑒𝑠 refers number of cells in series, branch number is referred as 𝑛 = [1,2,3]. The current via 𝑛 𝑡ℎ branch refers 𝑖 𝑛 and resistance in 𝑛 𝑡ℎ branch refers 𝑅 𝑛 .…”

“…In electric vehicle (EV), the battery has been deliberated as the most important component which has grown significantly in recent years as a result of power electronic converters [1], [2]. These difficulties present in EVs was lessened by combining high energy density sources like battery, ultra-capacitor (UC), superconducting magnetic energy storage (SMES) and flywheels storage devices [3].…”