Patent ID: 6921997

Claim:
An active magnetic bearing comprising: a) a stator having three magnetic poles, the three magnetic poles being first, second and third magnetic poles equally spaced around an internal circumference thereof; b) first and second amplifiers; and c) first, second and third coils, the first coil being wound around the first magnetic pole, the second coil being wound around the second magnetic pole, the third coil being wound around the third magnetic pole, the first coil and the second coil being wound in opposite directions around the first and the second magnetic poles respectively, the first amplifier being electrically connected between the oppositely wound first and second coils and the third coil being electrically connected to the second amplifier, wherein a first magnetic pole of the three magnetic poles that is wound by the first coil and a second magnetic pole of the three magnetic poles that is wound by the second coil are electrically connected to the first amplifier, and a third magnetic pole of the three magnetic poles that is wound by the third coil is electrically connected to the second amplifier.