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Apparatus for controlling induction motor

一种感应电动机、设备的技术，应用在异步感应电动机、单个多相感应电动机的启动器、控制发电机等方向，能够解决负载变化大、电动机运转故障等问题，达到改善性能的效果

Active Publication Date: 2015-06-03
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the motor fails to operate when the load varies greatly due to the frequency-voltage relationship or in a field requiring high torque and low rotational speed

Method used

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  • Apparatus for controlling induction motor
  • Apparatus for controlling induction motor
  • Apparatus for controlling induction motor

Examples

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Embodiment Construction

[0039] Various exemplary embodiments will be described more fully hereinafter with reference to the accompanying drawings in which some exemplary embodiments are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. On the contrary, the described version is intended to cover all such alterations, improvements and variations as fall within the scope of the present disclosure and novel concepts.

[0040] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0041] Figure 4 is a block diagram illustrating an apparatus for controlling an induction motor according to an exemplary embodiment of the present disclosure.

[0042] The apparatus for controlling an induction motor (also referred to as "induction motor control apparatus" or simply "apparatus") according to the present disclosure illus...

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Abstract

An apparatus for controlling an induction machine is disclosed, wherein a magnitude of a current outputted to the induction machine to an inverter is determined by the apparatus to determine a voltage amount that compensates the command voltage in response to the magnitude of the current, and a voltage compensation amount is added to a command voltage determined from a voltage-frequency relationship according to a relevant voltage compensation amount to output a final command voltage.

Description

technical field [0001] Teachings according to exemplary embodiments of the present disclosure generally relate to apparatus for controlling induction motors. Background technique [0002] In general, induction motors refer to electric motors used in various fields ranging from fields including fans and pumps to hoisting fields including cranes and elevators. Meanwhile, the inverter, which is a device configured as a device enabling VVVF (Variable Voltage Variable Frequency) operation, can adopt constant magnetic flux operation: V / f) or vector control to control the torque and rotational speed of the motor. [0003] figure 1 is a block diagram showing an inverter system according to the prior art, in which an inverter 2 configured to receive power from a 3-phase power source 1 converts the received power into a predetermined voltage and frequency Drives the induction motor 3. For example, the inverter 2 may be a 2-level inverter or a multi-level inverter with 3 or more lev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06H02P23/14H02P21/00H02P23/07
CPCH02P23/14H02P27/06H02P23/00H02P27/047H02P27/024H02P21/14H02P1/26H02K17/12
Inventor 俞安橹
Owner LSIS CO LTD
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