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Motor Efficiency Analysis Method for Motor Frequency Converters

An analysis method and frequency converter technology, applied in the direction of instruments, measurement of electrical variables, estimation/correction of motor parameters, etc., can solve problems such as no correlation and drive combination

Active Publication Date: 2018-12-14
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the results of patent and market analysis, there is currently no relevant combination with the driver in China, and it can display the real-time operating efficiency of the motor

Method used

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  • Motor Efficiency Analysis Method for Motor Frequency Converters
  • Motor Efficiency Analysis Method for Motor Frequency Converters
  • Motor Efficiency Analysis Method for Motor Frequency Converters

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Embodiment Construction

[0028] Now, the detailed structure of the present invention and its connections are described in conjunction with the following drawings, so as to facilitate the understanding of those skilled in the art.

[0029] see figure 1 As shown, it is a circuit function block diagram of the motor efficiency analysis method used in the motor frequency converter of the present invention, wherein a motor 11 is connected to a motor frequency converter 12 on the primary side 111, and an analog / digital converter (A / DConverter) 13 Connected to the primary side 111, and convert the measured analog current signal into a digital current signal, store it in a data temporary storage unit 14, a data operation unit 15 reads the current signal of the data temporary storage unit 14 and a motor inverter After a voltage signal and a frequency signal in 12, perform a data operation to obtain a speed signal. If the voltage signal cannot be effectively extracted, a voltage value can be input through a data...

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Abstract

The invention discloses a motor efficiency analysis method for a motor inverter. It is a real-time operating efficiency display device of a motor combined with a motor inverter. The device provides existing voltage values ​​through a primary side current signal measurement and driving device. Multiple calculation methods can be used to estimate the real-time efficiency, speed, torque, and stator resistance data of the motor at this load point. The design that conforms to on-site configuration allows users to perform adjustments without shutting down or affecting the production process. Factory motor performance management.

Description

technical field [0001] The present invention relates to a motor efficiency analysis method for a motor inverter, in particular to a method of measuring the primary side current signal of the motor and coordinating with the voltage value provided by the motor driver to estimate the load point by a calculation method. Motor speed, torque, stator resistance and other data, and then calculate the online operation efficiency of the motor. Background technique [0002] Generally speaking, the various types of manufacturing equipment in the factory are mostly motors and their transmission systems. According to the analysis results made by Baldor Electric Company in 2001, from the perspective of the lifetime cost of motors, the wasted energy consumption of motors has almost accounted for 98% of the lifetime cost of use, so if the energy efficiency of the motor can be effectively controlled, it will bring significant results in the promotion of energy saving and carbon reduction. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34G01R19/25
CPCG01R31/343H02P23/14H02P27/06Y02P80/10
Inventor 杨竣翔郑咏仁郭钦弘
Owner IND TECH RES INST