Highly Efficient Inductive Power Transfer: Variable Compensation for Misalignment Tolerance and Voltage/Current Doubler for Battery Interoperability

Wireless charging has the potential to speed up the transition to electric vehicles (EVs) because it is intrinsically a user-friendly technology. Furthermore, it is essential when charging completely autonomous EVs, and it enables the charging of EVs in motion without using overhead cables. The most common technology used in EV wireless charging...

Solar carparks for electric vehicle charging in a grid with limited capacity

The electricity grid in the Netherlands is currently unable to provide sufficient capacity for both the integration of new renewable electricity powerplants as well as for the integration of new electricity demands like electric vehicle charging. Symptoms of this scarcity of capacity, also seen in other countries undergoing an energy transition,...

A Hybrid Modulation Featuring Two-phase Clamped Discontinuous PWM and Zero Voltage Switching for 99% Efficient DC-Type EV Charger

Two-stage AC-DC converters are considered as a prominent solution for DC-type electric vehicle (EV) chargers. However, this kind of architecture suffers from high switching losses with large heatsink and DC-link capacitor volume. To relieve this issue, this paper presents a new hybrid modulation for DC-type EV chargers, where a two-phase...

State of Competition in the Dutch EV charging sector: Emerging issues in a developing market

In the Netherlands and some neighbouring European countries, the electric vehicle (EV) charging sector is receiving attention from market regulators. Concerns relating to competitive processes in this developing and rapidly growing sector are being raised. This paper identifies specific markets where regulation can help increase the level of...

Data-Driven Study of LV Distribution Grid Behaviour with Increasing Electric Vehicle Penetration

In this paper, the impact of Electric Vehicle (EV) uncontrolled charging with four levels of EV penetration in overall 21 real low voltage distribution grids in two seasons are analysed. The employed real grid data is provided by distribution system operators from three European countries: Austria, Germany and the Netherlands. At least six...

Study on Soft Start-Up and Shut-Down Methods for Wireless Power Transfer Systems for the Charging of Electric Vehicles

The increase in popularity of electric vehicles (EVs) and the pursuit of user convenience makes wireless power transfer (WPT) an attractive technology for the charging of batteries. The usage of WPT in e-transportation is not straightforward because the current standardization limits the allowed operating frequency range and magnitude of the...