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Method and apparatus for dynamic power control of an induction motor

A motor and power technology, applied in the direction of AC motor control, control system, control/regulation system, etc., can solve the problems of wasting electric power, reducing efficiency, reducing motor efficiency, etc.

Active Publication Date: 2019-08-20
V SQUARER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is in a no-load condition (or in a reduced load condition), in which case a considerable amount of excess electrical power is wasted due to the reduced efficiency of the motor
To a large extent, the reduced efficiency is caused by the aforementioned eddy current and resistive losses

Method used

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  • Method and apparatus for dynamic power control of an induction motor
  • Method and apparatus for dynamic power control of an induction motor
  • Method and apparatus for dynamic power control of an induction motor

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Embodiment Construction

[0022] In the following Detailed Description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the scope of the subject matter presented herein. It will be readily understood that the aspects of the present disclosure as generally described herein and shown in the drawings may be arranged, substituted, combined, separated and designed in a wide variety of different configurations, all of which are herein are explicitly envisaged.

[0023] I. overview

[0024] An electric motor may comprise conductive windings and a rotor arranged such that when an alternating current flows through the windings, a rotating magnetic field is generated which...

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PUM

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Abstract

An exemplary electric motor including conductive windings, switchgear, a rotor, and a controller is disclosed. The switching device is configured to selectively energize the first portion of the conductive winding in the first state and the second portion of the conductive winding in the second state with the AC source. The conductive winding generates a magnetic field having a first strength in a first state and a second strength in a second state. The rotor magnetically interacts with the magnetic field such that torque is exerted on the rotor. The amount of torque applied is related to the strength of the magnetic field. The controller is configured to: (i) determine a metric indicative of a load condition of the motor; and (ii) switch the switching device between the first state and the second state one or more times based on the determined metric.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Patent Application No. 14 / 931,368, filed November 3, 2015, and U.S. Provisional Patent Application No. 621 / 101,753, filed January 9, 2015, the contents of which are incorporated by reference in their entirety Incorporated into this article. technical field [0003] The present disclosure relates generally to induction motors, and more particularly to systems and methods for regulating power consumed by and output from a motor to conserve energy. Background technique [0004] Unless otherwise indicated herein, the materials described in this section are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section. [0005] Induction motors convert electrical energy into mechanical energy via electromagnetic interaction that produces torque on a shaft. An alternating current (AC) motor may include a stator surrounding a magnet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P25/18G05F1/70
CPCH02P25/04
Inventor L·F·瓦伦蒂J·C·戴利T·J·瓦伦蒂
Owner V SQUARER