Are ultrafast charging stations a viable solution for EV charging in China?
Comparing different upgrade strategies, the research provides valuable insights for policymakers and industry players. The results suggest that deploying large ultrafast charging stations with chargers between 350–550 kW in high-demand regions could be a viable solution to meet the surging charging demands of EVs in China.
How EV chargers can meet ultrafast charging demands?
For instance, at the airport EV charging station, with a total power capacity of 120 kW times the charger number, it can satisfy ultrafast charging demands from S1 to S7 using only this strategy, with a reasonable increase in waiting times. Regarding energy storage, it can buffer peak loads, but the cost is a major consideration.
Why do electric vehicle charging stations need fast DC charging stations?
As the electric vehicle market experiences rapid growth, there is an imperative need to establish fast DC charging stations. These stations are comparable to traditional petroleum refueling stations, enabling electric vehicle charging within minutes, making them the fastest charging option.
How long does a fast-charging station take to charge a battery?
For fast-charging stations with around 9 chargers (average 120 kW per charger), the average waiting time for scenario S4 (charging power of 350–550 kW, battery energy of 120–150 kW·h) is less than 1 minute, and the maximum waiting time is less than 20 minutes.
Why do charging stations need energy storage systems?
The distribution network faces an enormous issue because of the rising demand for electrical power at charging stations. Consequently, the requirement for electrical energy has increased, resulting in the adoption of Energy Storage Systems (ESS) 53. Figure 5 illustrates a charging station with grid power and an energy storage system.
How can airport EV charging station satisfy ultrafast charging demands?
It is noteworthy that if a total power capacity of 120 kW (under C2) times the charger number is provided, the airport EV charging station can satisfy the ultrafast charging demands from S1 to S7 by using only the dynamic waiting strategy.
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