The invention discloses an intelligent
phase selection switch controller, and belongs to the technical field of
power electronics. The intelligent
phase selection switch controller comprises a
microprocessor, a power supply circuit, a displaying circuit, a failure alarming circuit, a
voltage zero point capturing
signal collecting
processing circuit, a current zero point capturing
signal collection
processing circuit, a
voltage failure detection
signal collection
processing circuit, a current failure detection signal collection processing circuit, a magnetic latching
relay driving circuit and a switch controller mode conversion circuit. The
microprocessor receives input commands and signals input by the four signal collection circuits, carries out processing on the input signals, and controls the magnetic latching
relay to achieve zero passage switching. The intelligent
phase selection switch controller can achieve flashy-flow-free input of a
capacitor and electric-arc-free disjunction of
relay contactors, can detect and automatically compensate action
time error of zero switching, and can carry out detection on the performance of the relay, so that a user an replace different magnetic latching relays according to actual needs.