Electricity: motive power systems – Synchronous motor systems – Armature winding circuits
Patent
1999-11-24
2000-11-28
Ro, Bentsu
Electricity: motive power systems
Synchronous motor systems
Armature winding circuits
318138, 318139, 318254, 318724, H02P 616
Patent
active
061540021
ABSTRACT:
A control apparatus of an electric motor vehicle includes a device for operating an initial magnetic pole location based on three phase magnetic pole location signal pulses of a permanent magnet electric motor upon starting the electric motor vehicle, a device for operating a magnetic pole phase of the permanent magnet electric motor on the basis of the initial magnetic pole location, a rotation pulse of the permanent magnet electric motor, and a correction value which are operated with the rise and fall of the three phase magnetic pole location signal pulse after the starting, a device for determining a current to be supplied into the permanent magnet electric motor based on the magnetic pole phase and a torque reference value, and a device for correcting the magnetic pole phase when a predetermined one of the three phase magnetic pole location signal pulses rises or falls. In such an apparatus, as the magnetic pole phase is revised on the basis of the magnetic pole location signal of any one phase among the three phase magnetic pole location signals, the revising frequency of the magnetic pole phase becomes low and the microcomputer processing burden when the magnetic pole phase correction device operates in a high-speed rotation can be reduced.
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Izumisawa Katsuyuki
Mitsui Toshisada
Obara Sanshiro
Hitachi , Ltd.
Ro Bentsu
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