Design of a one kilowatt wireless charging system for electric vehicle in line with Bharath EV standards

Abstract

Emerging technologies in an electric vehicle (EV) had greater advancement in the control, batteries and electric motors design. But safety and reliability are the major concerns when the consumer is dealing with a high voltage conductor for charging. The recurring of plugging in the switch for charging is an undeniable disadvantage. Therefore, to eliminate the human intervention in charging of a battery, wireless power transfer (WPT) will be the most effective methodology to charge the EV. This paper aims at building the prototype of 1 kW inductive WPT with high frequency supply with power converters. To design this system, standards of EV charging systems are incorporated; also, a suitable coil structure is identified for the given EV model as per the standards. The mismatch or misalignment of the receiver coil, air gap between receiver–transmitter (i.e., proximity) and compensation techniques are considered in this work. Efficient design of power electronic converter is implemented for both transmitter and receiver side. Both coil design model and the power electronic system are integrated to test the performance of proposed WPT technology.

Design and Performance Analysis of New Coupling Magnetic Core Structure for Dynamic Wireless Charging System of Electric Vehicle

“…The calculation formula of the mutual inductance M sc of the square-square coil is shown in Equation (11), which is the sum of the mutual inductance between the wire sections of the two coils.…”

“…The transmitting end is laid on the road to realize the high-frequency conversion of electric energy and transmission, and the pickup end is placed on the bottom of the vehicle to complete the signal pickup and energy output. [6][7][8][9][10][11][12][13][14][15] However, the transmitting coil and the pickup coil are physically separated, presenting a loosely coupled structure, [16] which leads to a certain degree of magnetic leakage, reduces the efficiency of energy transmission and leads to larger electromagnetic radiation. [17][18][19][20] Therefore, most of the existing research has been conducted to reduce the distribution of magnetic lines of force in the spatial medium by improving the structural layout of the core, so that as many magnetic lines of force as possible flow with the core to form a closed loop, which is used to attenuate the intensity of electromagnetic radiation in the air [21][22][23][24][25] and to increase the energy transfer power and efficiency.…”

Co‐simulation of integrated transmission and distribution systems (ITDS)

“…The inclusion of EVs in the system considering the intermittency of various RES with cost benefit analysis of the same has been presented in [24]. The prototype design for a 1 kW inductive wireless power transfer system with a high frequency supply and power converters for electric vehicle charging station (EVCS) with charging standards has been provided in [25]. The load profile of EVCS restricted by both grid‐to‐vehicle (G2V) and vehicle‐to‐grid (V2G) rule sets is calculated using a coordinated charging ap proach.…”

A day‐ahead bidding strategy for battery swapping and charging system participating in the regulation market

“…Electric vehicles (EVs) are essential in reducing carbon emissions and adjusting the energy structure [1,2]. Benefiting from the improvements in driving range and charging convenience, the market share of EVs has proliferated.…”