EV charge times

Given all the clever electronics inside it would be a modest change to make the EV charger load shed or throttle back to a reduced rate when the nominal 50Hz frequency dropped below some limit, thus reducing stress on the grid at any time of day, and far less dependent on the correct setting of network time and standardised load schedules. After all, a grid tie inverter knows to throw itself off-line if the mains frequency strays out of bounds for more than a few cycles, so no-one can argue the technology does not exist or is too difficult. If we are to make more use of wind power and other less than constant sources, that do not respect the time clock, then the ability of loads to detect times of grid stress and wind their necks in automatically will become more important.

Mike.

Given all the clever electronics inside it would be a modest change to make the EV charger load shed or throttle back to a reduced rate when the nominal 50Hz frequency dropped below some limit, thus reducing stress on the grid at any time of day, and far less dependent on the correct setting of network time and standardised load schedules. After all, a grid tie inverter knows to throw itself off-line if the mains frequency strays out of bounds for more than a few cycles, so no-one can argue the technology does not exist or is too difficult. If we are to make more use of wind power and other less than constant sources, that do not respect the time clock, then the ability of loads to detect times of grid stress and wind their necks in automatically will become more important.

Mike.