US 2007/0182266 A1 · Motor with simplified structure and related control device

Abstract

A brushless motor and a related control device are disclosed in a structure wherein a stator has U-phase, V-phase and W-phase stator poles, with two of the U-phase V-phase and W-phase stator poles carry thereon respective phase windings, in the absence of a selected phase winding related to a remaining one of the U-phase V-phase and W-phase stator poles. The respective phase windings have end portions connected together at a junction point. A three-phase alternating voltage is applied to the respective phase windings and the junction point to allow the stator to have an electromagnetic action thereby drivably rotating a rotor. The stator poles may be formed in trapezoid shapes to minimize interference between associated component parts for easy assembly in high productivity and efficiency with a reduction in torque ripple.

Claims16

Dependent claims

A three-phase alternating current motor, comprising:

a stator including first phase stator poles carrying thereon a first phase winding selected from a U-phase winding, a V-phase winding and a W-phase winding, second phase stator poles carrying thereon a second phase winding selected from the U-phase winding, the V-phase winding and the W-phase winding and third phase stator poles in the absence of a third phase winding selected from the U-phase winding, the V-phase winding and the W-phase winding;
and
a rotor rotatably supported inside the stator poles of the stator;
wherein the first and second phase windings are excited with excitation currents upon synthesizing a three-phase alternating current to allow the stator to electromagnetically generate a three-phase alternating electromagnetic action through which the rotor is driven.

1 more element

Dependencies are inferred from the claim text.

Motor with simplified structure and related control device

Life of this patent

Motor with simplified structure and related control device

Life of this patent

Abstract

Claims16