The simplest three-phase thyristor charger circuit

This circuit uses a thyristor to achieve three-phase half-wave controllable voltage regulation. It does not require a synchronous
transformer and can regulate the conventional charging current of 170-230V batteries. This circuit uses the potential of the charged battery to
turn off the thyristor . The working condition of the circuit is that the battery potential must be greater than or equal to half of the secondary phase voltage peak value.