Invention Application
US20120248924A1 ELECTRIC ROTATING MACHINE DRIVABLE WITH A SINGLE THREE-PHASE INVERTER 有权
电动旋转机用单相三相逆变器驱动

  • Patent Title: ELECTRIC ROTATING MACHINE DRIVABLE WITH A SINGLE THREE-PHASE INVERTER
  • Patent Title (中): 电动旋转机用单相三相逆变器驱动
  • Application No.: US13524247
    Application Date: 2012-06-15
  • Publication No.: US20120248924A1
    Publication Date: 2012-10-04
  • Inventor: Asuka TANAKAMakoto Taniguchi
  • Applicant: Asuka TANAKAMakoto Taniguchi
  • Applicant Address: JP Kariya-city
  • Assignee: DENSO CORPORATION
  • Current Assignee: DENSO CORPORATION
  • Current Assignee Address: JP Kariya-city
  • Priority: JP2009-191945 20090821
  • Main IPC: H02K3/28
  • IPC: H02K3/28
ELECTRIC ROTATING MACHINE DRIVABLE WITH A SINGLE THREE-PHASE INVERTER
Abstract:
In an electric rotating machine, a stator coil is comprised of first and second winding groups. The stator coil is wound around a stator core in a concentrated winding manner so that the phase difference in electrical angle between each corresponding pair of windings of the first and second winding groups is equal to π/6. Further, the windings of the first and second winding groups are connected to form Δ-Y connections. Consequently, the sixth harmonic components of the electromagnetic forces created by the windings of the first winding group can be offset by those of the electromagnetic forces created the windings of the second winding group. As a result, the total magnetic noise and torque ripple generated in the machine can be reduced. Moreover, the machine can be driven with only a single three-phase inverter to achieve the effects of reducing the total magnetic noise and torque ripple.
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