Device for controlling polyphase rotating machine

Details Device for controlling polyphase rotating machine Device for controlling polyphase rotating machine

2011-08-16

2011-08-16

Benson, Walter (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S400010, C318S400040, C318S722000, C318S729000, C318S756000

Reexamination Certificate

active

07999497

ABSTRACT:
A device for controlling a polyphase rotating machine comprising a stator, a rotor, and sensors, the device being capable of receiving at least one first sensing signal (V, W, U) representing a position of the rotor relative to the stator and outputted from a first sensor (16; 18; 14), and a second sensing signal representing the position and phase-shifted relative to the first signal (V, W, U). The second signal is outputted from a second sensor. The control device comprises: means (K, R) for combining the first and the second sensing signals (U, V, W) into a combined signal (Ku; Kv; Kw) including at least one controlled switching signal with a variable cyclic ratio. The combined signal (Ku; Kv; Kw) is based on the cyclic ratio and enables the machine to be controlled.

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