DC-to-DC Converter Topologies for Wireless Power Transfer in Electric Vehicles

Abstract

At present, about nineteen resonant compensation networks capable of operating as pulsating voltage source are utilized for wireless power transfer (WPT), in which all resonant elements participate in resonance. The majority of networks employ full-bridge or half-bridge topologies which suffer from significant stray and leakage inductances that trap the energy and limit the power transfer; hence, reduce the efficiency. Therefore, these topologies utilize additional resonant networks with many elements and switches to exploit all magnetic field-flux density curve quadrants to eliminate switching losses. Such an approach is less desirable as it adds cost and increases complexity. Therefore, this paper proposes four DC-DC converters that utilize resonant compensation networks without additional resonant tanks, targeting Electric Vehicles wireless charging applications. The proposed converters meet the requirements of charging time, cost, range and high efficiency without a dc flux bias as in existing solutions. The technical viability of the proposed dedicated dc-dc converters for wireless power transfer applications has been validated using preliminary simulations.

Isolated and Nonisolated DC-to-DC Converters for Medium-Voltage DC Networks: A Review

“…Moreover, galvanic isolation is necessary to isolate the grid voltage. Resonant converters have a great interest in charging applications [111]. Therefore, the isolated DAB family essentially the 2L DAB, three-phase DAB, or resonant DAB can be a proper solution for charging infrastructure since it comes with high output current and galvanic isolation [92], [100].…”

A comparison of P5, Cuk and class E 2 converters for WPT in EV battery charging

“…The first instance of preposing these isolated DC-DC converter topologies for WPT EV charging can be seen in [16]. Where the Cuk, SEPIC, Zeta and P5 converter topologies are compared.…”

“…Where the Cuk, SEPIC, Zeta and P5 converter topologies are compared. The work in [16] also compares the inverting section of the Cuk converter to that of a standard H-bridge inverter. It is seen that at a duty cycle of 50% it is possible to generate a sinusoidal waveform in the inverter section of the isolated Cuk converter.…”

Bidirectional medium-frequency DAB converter with dual-phase-shift modulation and super-twisting sliding mode control

“…The tremendous use of various dc power sources such as photovoltaics (PVs) and energy storage systems (ESSs) (e.g. supercapacitors (SCs) and batteries) are massively reliant on isolated bidirectional dc-dc converters in low-medium voltage DC systems [1][2][3][4]. The isolated bidirectional dc-dc converters can be utilized to achieve the interface between the two dc grids or between the dc networks and energy systems.…”