Control system for permanent magnet synchronous motor and...

Details Control system for permanent magnet synchronous motor and... Control system for permanent magnet synchronous motor and...

2008-06-17

2008-06-17

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400140, C318S400170, C318S400320

Reexamination Certificate

active

07388341

ABSTRACT:
A vector control system for a permanent magnet synchronous motor, using a current control equivalent output value, a frequency instruction value, a current detection value, an inference phase error value, and a motor constant, identifies a motor resistance equivalent or a resistance setting error equivalent. Next, the vector control unit, using the identified value, corrects a set value R* equivalent of a voltage instruction calculation unit and a n inference phase error calculation unit.Thereby, a vector control system for a permanent magnet synchronous motor can realize a robust control characteristic for changing of a resistance constant of a motor in a low rotation speed area under position sensor-less control. Further, a vector control system for a permanent magnet synchronous motor can be applied in common in a system performing inexpensive current detection.

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patent: 2003-164188 (2003-06-01), None

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