Patent ID: 6072288
Filing Date: 2000-06-06
Classification: B60L,H02P,Y02T

Abstract:
A control apparatus of an electric motor vehicle comprising: means for operating an initial magnetic pole location based on three phase magnetic pole location signal pulses of a permanent magnet electric motor in starting an electric motor vehicle,means for operating a magnetic pole phase of said permanent magnet electric motor on the basis of said initial magnetic pole location,a rotation pulse of the permanent magnet electric motor, and a correction value, are operated with a rise and fall of said three phase magnetic pole location signal pulse after starting,means for determining a current to be supplied into said permanent magnet electric motor based on said magnetic pole phase and a torque reference value,means for correcting said magnetic pole phase when a predetermined one of said three phase magnetic pole location signal pulses rises or falls, anda port changing means in which all magnetic pole location signal pulses of three phase detected from said permanent magnet electric motor are supplied to said current control means upon starting said electric motor vehicle and only a predetermined one of said magnetic pole location signal pulses is supplied to said current control means after the starting.