Momentum Dynamics, a wireless charging startup, sent out a press release this week claiming that they will deliver 200 kW wireless charging systems by the end of the year. In comparison, the company had previously only delivered 25 kW and 50 kW systems, and just recently, it was testing a very slow 1.5 kW wireless charger with Google for its self-driving car prototypes.
A 200 kW system would not only be faster than most charging stations, but it would also have higher output than the Tesla Supercharger’s 135 kW charge rate.
Momentum Dynamics CEO Andrew Daga on the announcement:
“These high power levels are causing a lot of excitement across targeted vertical markets, especially with municipal bus transit agencies where high power is required to keep a municipal bus in operation all day,”
Dada said the company is already planning to deliver the charging systems to municipal agencies this year in Maryland and Washington state.
The company describes its wireless charging technology in the press release:
“Wireless chargers use resonant magnetic induction to transfer power without the use of cables. They include the transmitter on the ground and a power receiver mounted to the underside of the vehicle. Despite an air gap of up to 12”, the efficiency of inductive charging is equivalent to plug-in charging.”
Charging efficiency and charge rate have always been the main problems with wireless charging technologies. While Momentum Dynamics seems to have solved the charge rate issue, if they can indeed deliver a 200 kW, we will have to wait for a demonstration to prove the claim of efficiency equivalent to plug-in charging stations.
Most plug-in systems can charge a vehicle at 90% efficiency with conversion from AC to DC charge. Although wireless suppliers have claimed similar results in the past, it would be particularly important here at a charge rate of 200 kW.