Continuously rotating electric motor having a permanent magnet rotor
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United States of America
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Apr 20, 2021
Grant Date -
Jun 11, 2020
app pub date -
Nov 19, 2019
filing date -
Nov 19, 2019
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Abstract
A continuously rotating electric motor includes a rotor provided with permanent magnets and a stator formed by two coils in which, when the rotor is rotating, two induced voltage signals (UB1 and UB2) are respectively generated, which signals have an electric phase shift φ where 5°≤φ≤90°, preferably 30°<φ<65°. The control device includes a circuit for detecting intersection times (TC) at which values of the two induced voltage signals are substantially equal. The control device is arranged to generate electric driving pulses to rotate the rotor, which are respectively initiated at initiation times determined by respective intersection times, and such that the electric driving pulses can be applied to the two coils arranged in series. Preferably, the control device is arranged such that the initiation times of the electric driving pulses occur directly after detections of corresponding intersection times.
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