Patent ID: 6154002
Filing Date: 2000-11-28
Classification: B60L,H02P,Y02T

Abstract:
A control apparatus of an electric motor vehicle comprising:an inverter bridge,a permanent magnet electric motor driven by an electric current from said inverter bridge,pole location operating means for operating an initial magnetic pole location based on three phase magnetic pole location signal pulses of said permanent magnet electric motor in starting an electric motor vehicle, pole phase operating 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, based on a rise and fall of said three phase magnetic pole location signal pulse after starting said electric motor vehicle,determining 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, andmeans for correcting said magnetic pole phase based on a predetermined one of said rises and falls of said three phase magnetic pole location signal pulses when starting said electric motor vehicle.