The owner of the car park wants to install certain quantity of EV chargers for visitors. They wants to go for a pilot test before the complete roll-out of the PSN-EVC system. Data shows that the additional loads from EV charging will cause higher peak loads.
It is found that the peak loads after the services of EV chargers has skyrocketed to a dramatic high level. We then installed the PSN-EVC System to address the problem.
One set of PSN-EVC including a master header box and a charger for each charging bay. the system can be easily expanded to supply totally 12 charging bays when needed.
Master Header Box collects power data from the main switch outgoing (and incoming) circuits as well as the power drawn by each EV. The controller carries out calculation and decides the charge rate for each charger from a slave controller. Master controller connects, communicates and interacts with another master for optimized and coordinated charging load balancing from a shared power pool.
(1) If Shadow Power > total EV power required , all EVs are allowed to draw max rate.
(2) If Shadow Power < total EV power, individually reduce the charging rate for each bay to the best optimized level in order to afford all charging bays.
On the first day of operation, it is recorded that a large amount of Shadow Power has been harnessed for EV charging. It enables quick and smart EV charging services in the car park in only 10 days with zero money invested in power upgrade. It helps improve the power consumption profile of the building. The long run result shows that a 90% power utilization rate is achieved.