Method for measuring wound rotor type motor rated condition rated condition iron loss

A technology of rated working conditions and measurement methods, applied in the direction of measuring devices, measuring electrical variables, measuring resistance/reactance/impedance, etc., can solve the problems of high accuracy and influence, and achieve the effect of simple measurement

Active Publication Date: 2015-07-01
JIANGSU WELM TECH
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the known prior art is to use the motor parameters to estimate the iron loss under the rated working condition of the wound motor by using the motor parameters, which has the problems of being greatly affected by the motor parameters and having poor accuracy

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  • Method for measuring wound rotor type motor rated condition rated condition iron loss

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Embodiment Construction

[0017] Such as figure 1 Shown. The iron loss measurement system of the wound motor under rated conditions of the present invention includes an AC sinusoidal voltage source 101, a wound motor stator winding 102, a prime mover 103, a wound motor rotor 104, a power sensor 105, a current sensor 106, and an identification unit 107, where the output end of the AC sinusoidal voltage source 101 is connected to the input end of the winding motor stator winding 102 and the input end of the power sensor 105, and the output end of the power sensor 105 is connected to the input end of the identification unit 107, the winding motor The output end of the stator winding 102 is connected to the input end of the current sensor 106, the output end of the current sensor 106 is connected to the other input end of the identification unit 107, and the output end of the prime mover 103 is connected to the input end of the wound motor rotor 104.

[0018] Combine figure 1 Describe the iron loss measurem...

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Abstract

The invention discloses a method for measuring wound rotor type motor rated condition rated condition iron loss, and belongs to methods for measuring wound rotor type motor parameters. A prime motor is adopted to drag a wound rotor type motor rotor to rotate at the rated speed of a wound rotor type motor. A wound rotor type motor stator winding is conducted to an alternate current sinusoidal voltage source. A power sensor is adopted to measure the alternate current sinusoidal voltage source to obtain power output power. A current sensor is adopted to measure the wound rotor type motor stator winding to obtain a stator current effective value. The stator current effective value and the square of wound rotor type motor stator equivalent resistance are multiplied, and then the copper loss of a wound rotor type motor rated condition rated condition is obtained. The copper loss of the wound rotor type motor rated condition rated condition is subtracted from the output power of the alternate current sinusoidal voltage source, and then the iron loss of the wound rotor type motor rated condition rated condition is obtained. According to the method for measuring the wound rotor type motor rated condition rated condition iron loss, a complex iron loss computer model of the wound rotor type motor does not need to be set, and measuring is easy and accurate.

Description

Technical field [0001] The invention relates to a winding motor, in particular to a method for measuring the iron loss of the winding motor under rated operating conditions. Background technique [0002] Wound motor has a series of advantages such as simple structure, reliable operation, sturdy and durable, low price, convenient maintenance and so on. It is widely used in hoists, cranes, tower cranes and other places that require heavy starting and speed regulation. The iron loss of the wound motor includes hysteresis loss and eddy current loss. The measurement of the iron loss in the rated working condition is of great significance to the design, manufacture and energy-saving operation of the wound motor. At present, the known prior art uses motor parameters to estimate the iron loss of a wound-type motor under rated operating conditions through empirical formulas, which has the problem of being greatly affected by the motor parameters and poor accuracy. Therefore, how to quick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26
Inventor 张懿魏海峰冯友兵
Owner JIANGSU WELM TECH
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