Synchronous machine control apparatus

Details Synchronous machine control apparatus Synchronous machine control apparatus

2005-04-27

2009-06-30

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S434000, C318S714000, C318S400150

Reexamination Certificate

active

07554281

ABSTRACT:
A synchronous machine control apparatus which can produce a torque level as close as possible to a desired torque command level while considering limitations on an output current of a power conversion unit. A synchronous machine control apparatus includes a torque current command generator including a torque current calculator for calculating a torque current command iδ** from a torque command τ* and a flux command φ*, a torque current limit generator for generating a maximum torque current command value iδ* max that can be generated based on a magnetizing current command iγ* and a current limit value imax, and a limiter for imposing limitations on iδ** based on iδ* max, a flux command generator for calculating the flux command φ* based on iδ* fed from the torque current command generator, a flux calculator for calculating an interlinked armature flux feedback value |Φ| based on an armature current feedback value, and a flux controller for generating the magnetizing current command iγ* such that φ* and |Φ| coincide with each other and delivering iγ* to the torque current command generator.

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