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Motor efficiency analysis method for motor inverter

An analysis method and frequency converter technology, which is applied in the direction of instrumentation, measurement of electrical variables, estimation/correction of motor parameters, etc., can solve problems such as uncorrelated and drive combination

Active Publication Date: 2016-09-28
IND TECH RES INST
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  • Description
  • Claims
  • Application Information

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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 inverter
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  • Motor efficiency analysis method for motor inverter

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Embodiment Construction

[0028] Now the detailed structure of the present invention and its connection relationship will be described with the following drawings to facilitate the understanding of those skilled in the art.

[0029] See figure 1 Shown is a circuit functional block diagram of the motor efficiency analysis method for a motor inverter of the present invention, in which a motor 11 is connected to a motor inverter 12 on the primary side 111, and an analog / digital converter (A / D Converter) 13 is connected to the primary side 111, and converts the measured analog current signal into a digital current signal, and stores 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 frequency conversion A voltage signal and a frequency signal of the device 12 perform a data operation to obtain a rotation speed signal. If the voltage signal cannot be extracted effectively, a data input unit 16 can be used to input the volta...

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Abstract

The present invention discloses a motor efficiency analysis method for motor inverter. The method can be performed via a real-time motor operation efficiency display device. Based on the measured primary current signal and the voltage provided by the driving device, the device can estimate related data, such as the real-time efficiency, rotational speed, torque and stator resistance, by means of several algorithms. Besides, the device is designed to be applied to most motors; therefore, users can manage the efficiency of all motors of the factory without the need to stop the machines or the manufacturing process.

Description

Technical field [0001] The present invention relates to a motor efficiency analysis method for a motor frequency converter, and more particularly to a method of measuring the current signal on the primary side of the motor and matching the voltage value provided by the motor driver to estimate the load point through a calculation method. Motor speed, torque, stator resistance and other data, and then calculate the motor online operating efficiency. Background technique [0002] Generally speaking, the various types of manufacturing equipment in the plant are mostly motors and their transmission systems. According to the analysis made by Baldor Electric Company in 2001, from the perspective of the lifetime cost of the motor, the energy consumption of the motor is almost It accounts for 98% of the lifetime use cost. Therefore, if the energy use efficiency of the motor can be effectively grasped, it will bring significant results to the promotion of energy saving and carbon reductio...

Claims

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Application Information

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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