US 7,923,952 B2Granted

Device for controlling polyphase rotating machine

AssigneeValeo Equipements Electriques Moteur

InventorsJulien Masfaraud, Hugues Doffin, Farouk Boudjemai

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Abstract

A device for controlling a polyphase rotating machine, the machine comprising a stator, a rotor, and sensors, the device being capable of receiving: at least one first sensing signal (U; V; W) representing a position of the rotor relative to the stator and output by a first sensor; and a second sensing signal (V; W; U) representing the position and phase-shifted relative to the first signal and output by a second sensor. The control device comprises: means (K, R) for combining the first and second sensing signals into a combined signal, the means including at least one controlled switching element capable adopting at least in two states, the combined signal being based on a state of the first element and enabling the machine to be controlled.

Claims14

Dependent claims

A device for controlling a polyphase rotary electrical machine, said machine comprising a stator, a rotor, a first sensor producing a first sensor signal (U;

V;
W) representing a position of the rotor with respect to the stator and a second sensor producing a second sensor signal (U;
V;
W) representing the position and offset in phase with respect to the first sensor signal;
said control device producing at least one digital control signal (U′, V′, W′) corresponding to one of said first and second sensor signals (U, V, W) with a required phase lead δ with respect thereto;
said control device comprising means (K, R) including at least one controlled switching element (K0, K1, K2, K3) and provided to receive:
a the first sensor signal (U;
V;
W), and
the second sensor signal (V;
W;
U);
said means (K, R) provided for combining the first and second sensor signals into a combined signal (Su;
Sv;
Sw), said at least one controlled switching element (K0, K1, K2, K3) taking at least two states, the combined signal (Su;
Sv;
Sw) being a function of a state of said at least one controlled switching element and making it possible to control said polyphase rotary electrical machine.

14 more elements

Dependencies are inferred from the claim text.