Dynamic load balancing
The dynamic load balancing EV charger is a device that ensures that the overall energy balance of the system is maintained. The energy balance is determined by the charging power and the charging current. The charging power of the dynamic load balancing EV charger is determined by the current flowing through it. It saves energy by adapting the charging capacity to the current demand.
In a more complicated situation, if many EV chargers charge simultaneously, the EV chargers may consume a large amount of energy from the grid. This sudden addition of power may cause the power grid to become overloaded. The dynamic load balancing EV charger can handle this problem. It can divide the burden of the grid evenly among several EV chargers and protect the power grid from damage caused by overloading.
The dynamic load balancing EV charger can detect when the power grid is overburdened and adjust its operation accordingly. It may then control the charging of the EV charger, allowing for energy savings to be realized.
The dynamic load balancing EV charger can also monitor the charging voltage of the vehicle so that it can help save power when the car is fully charged. It can scan the grid load and save energy.
PEN Fault Detection
Most UK families are wired with a PME system (Protective Multiple Earth), where the earth wiring runs to a main supply point connected to a neutral conductor which is earthed at multiple points. These systems have the potential for a rare fault called neutral failure, where an upstream disconnection due to degrading or corrosion could increase the risk of electric shock.
PEN Fault Detection: For TN-C-S systems without grounding at the user's end (as shown above), when the PEN line to the household is cut off due to a line fault and the rear end of the PEN line is in suspension without repeated earthing, and the distribution box RCD is not working properly at this time, the voltage of the protective ground PE is equal to the voltage of the fire line L.
If not equipped with this protection,the shell of the EV in charging will be charged with a voltage equal to the fire line L
voltage. If there are no other appliances except the EV charger, the leakage current will exceed 30mA and the person will not be able to disengage himself, which is a safety hazard; if there are even other appliances, the leakage current can easily exceed 100mA, which is very fatal.
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