Control apparatus for synchronous motor

Details Control apparatus for synchronous motor Control apparatus for synchronous motor

2005-08-23

2005-08-23

Martin, David (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

C318S132000, C318S254100, C318S434000, C318S727000, C318S731000

Reexamination Certificate

active

06933701

ABSTRACT:
In a control apparatus for a synchronous motor, a coordinate converter converts a detected current into a current on rotational biaxial coordinates (d-q axis). A current controller outputs a voltage command on the coordinates so that the current follows a current command on the coordinates. Another coordinate converter converts the voltage command into three-phase voltage commands. An adaptive observer calculates an angular frequency so that a q-axis component of an estimated rotor magnetic flux is zero. An inverter applies a voltage to the motor based on the voltage command.

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