Invention Grant
US07652440B2 Switching system for controlling the starting of an electrical motor 失效
用于控制电动机启动的开关系统

  • Patent Title: Switching system for controlling the starting of an electrical motor
  • Patent Title (中): 用于控制电动机启动的开关系统
  • Application No.: US11916970
    Application Date: 2006-06-08
  • Publication No.: US07652440B2
    Publication Date: 2010-01-26
  • Inventor: Abhishek Singh
  • Applicant: Abhishek Singh
  • Agency: Banner & Witcoff, Ltd.
  • Priority: IN1490/DEL/2005 20050609
  • International Application: PCT/IN2006/000194 WO 20060608
  • International Announcement: WO2006/131937 WO 20061214
  • Main IPC: H02P6/04
  • IPC: H02P6/04
Switching system for controlling the starting of an electrical motor
Abstract:
A low cost switching system for an electrical motor, which is speed sensitive, direction of rotation insensitive, load insensitive and voltage fluctuation insensitive. The switch contains a power supply, a control circuit, a zero cross detector circuit, a triggering circuit and an electronic switch to provide the switching action. A time delay hysteresis inducement circuit is provided in the switching system to energized and deenergized the capacitor at a predetermined synchronous speed of the motor. The switching system first checks the speed of the motor before reenergizing the start capacitor, which increases the life of the motor. The switching system operates in high temperature range and regardless the value of the capacitor used.
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