CONTROL SYSTEM FOR AC ELECTRIC CAR

摘要

A control system for an AC electric car comprising a stored program processor which performs the motor current phase control and additional functions such as speed calculation, slip and skid detection and monitoring by an interruption based on a timing signal produced by a first timing signal generator (SYG1) in synchronism with the power supply voltage or a second timing signal generator (SYG2) independent of the first timing signal generator so that at least selected functions are carried out by an interruption based on the second timing signal produced by the second timing generator (SYG2) which is arranged to produce the timing signal (SY2) even when the power supply voltage is absent.