CN103323679A - Method for measuring wound rotor type motor rated condition rated condition iron loss - Google Patents
Method for measuring wound rotor type motor rated condition rated condition iron loss Download PDFInfo
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- CN103323679A CN103323679A CN2013102455469A CN201310245546A CN103323679A CN 103323679 A CN103323679 A CN 103323679A CN 2013102455469 A CN2013102455469 A CN 2013102455469A CN 201310245546 A CN201310245546 A CN 201310245546A CN 103323679 A CN103323679 A CN 103323679A
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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
The present invention relates to a kind of wound-rotor motor, relate in particular to a kind of wound-rotor motor declared working condition iron loss measuring method.
Background technology
Wound-rotor motor has simple in structure, and is reliable, sturdy and durable, low price, easy to maintenance etc. a series of a bit, need heavy-load start and need to be widely used in the place of speed governing at hoister, crane, tower crane etc.The wound-rotor motor iron loss comprises magnetic hysteresis loss and eddy current loss, and the measurement of declared working condition iron loss is significant to manufacturing and designing with energy-saving run of winding motor.At present, known prior art is to utilize motor parameter to obtain wound-rotor motor declared working condition iron loss by the experimental formula estimation, exists to be subjected to motor parameter to influence big and the relatively poor problem of accuracy.Therefore, how measuring wound-rotor motor declared working condition iron loss rapidly and accurately, is that prior art has problem to be solved.
Summary of the invention
The objective of the invention is to propose a kind of wound-rotor motor declared working condition iron loss measuring method at the defective that prior art exists, effectively improve the measurement performance of wound-rotor motor declared working condition iron loss.
Wound-rotor motor declared working condition iron loss measuring method of the present invention comprises the following steps:
Step 1: adopt prime mover to drag the wound-rotor motor rotor and rotate with the wound-rotor motor rated speed;
The rated speed of prime mover drags maintenance rotor winding open circuit in the process greater than the rated speed of wound-rotor motor.
Step 2: the wound-rotor motor stator winding is connected the AC sinusoidal voltage source;
The frequency of the sinusoidal voltage of AC sinusoidal voltage source output equates that with the rated frequency of wound-rotor motor the effective value of the sinusoidal voltage of AC sinusoidal voltage source output equates with the rated voltage of wound-rotor motor.
Step 3: adopt power sensor to measure the AC sinusoidal voltage source and obtain output power of power supply P
1
Step 4: adopt current sensor measurement wound-rotor motor stator winding to obtain stator current effective value I;
Step 5; Calculate wound-rotor motor declared working condition copper loss P
2
With square multiplying each other of above-mentioned current effective value I and wound-rotor motor stator equivalent resistance R, obtain wound-rotor motor declared working condition copper loss P
2
Step 6; Calculate wound-rotor motor declared working condition iron loss P.
With above-mentioned AC sinusoidal voltage source output power P
1Deduct above-mentioned wound-rotor motor declared working condition copper loss P
2, obtain wound-rotor motor declared working condition iron loss P.
The present invention does not need to set up the iron loss computation model of wound-rotor motor complexity, measures simple, accurate.
Description of drawings
Fig. 1 is measuring system block diagram of the present invention.
Embodiment
As shown in Figure 1.Wound-rotor motor declared working condition iron loss measuring system of the present invention, comprise AC sinusoidal voltage source 101, wound-rotor motor stator winding 102, prime mover 103, wound-rotor motor rotor 104, power sensor 105, current sensor 106, identification unit 107, wherein the output terminal in AC sinusoidal voltage source 101 respectively with the input end of wound-rotor motor stator winding 102, the input end of power sensor 105 connects, the input end of the output termination identification unit 107 of power sensor 105, the input end of the output termination current sensor 106 of wound-rotor motor stator winding 102, another input end of the output termination identification unit 107 of current sensor 106, the input end of the output termination wound-rotor motor rotor 104 of prime mover 103.
Narrate wound-rotor motor declared working condition iron loss measuring method of the present invention in conjunction with Fig. 1, comprise the following steps:
Step 1: adopt prime mover to drag the wound-rotor motor rotor and rotate with the wound-rotor motor rated speed;
The rated speed of prime mover drags maintenance rotor winding open circuit in the process greater than the rated speed of wound-rotor motor.
Step 2: the wound-rotor motor stator winding is connected the AC sinusoidal voltage source;
The frequency of the sinusoidal voltage of AC sinusoidal voltage source output equates that with the rated frequency of wound-rotor motor the effective value of the sinusoidal voltage of AC sinusoidal voltage source output equates with the rated voltage of wound-rotor motor.
Step 3: adopt power sensor to measure the AC sinusoidal voltage source and obtain output power of power supply P
1
Step 4: adopt current sensor measurement wound-rotor motor stator winding to obtain stator current effective value I;
Step 5; Calculate wound-rotor motor declared working condition copper loss P
2
With square multiplying each other of above-mentioned current effective value I and wound-rotor motor stator equivalent resistance R, obtain wound-rotor motor declared working condition copper loss P
2
Step 6; Calculate wound-rotor motor declared working condition iron loss P.
Output power P with above-mentioned AC sinusoidal voltage source
1Deduct above-mentioned wound-rotor motor declared working condition copper loss P
2, obtain wound-rotor motor declared working condition iron loss P.
Claims (3)
1. a wound-rotor motor declared working condition iron loss measuring method is characterized in that comprising the following steps:
Step 1: adopt prime mover to drag the wound-rotor motor rotor and rotate with the wound-rotor motor rated speed;
Step 2: the wound-rotor motor stator winding is connected the AC sinusoidal voltage source;
Step 3: adopt power sensor to measure the AC sinusoidal voltage source and obtain output power of power supply P
1
Step 4: adopt current sensor measurement wound-rotor motor stator winding to obtain stator current effective value I;
Step 5; Calculate wound-rotor motor declared working condition copper loss P
2:
With square multiplying each other of above-mentioned current effective value I and wound-rotor motor stator equivalent resistance R, obtain wound-rotor motor declared working condition copper loss P
2
Step 6; Calculate wound-rotor motor declared working condition iron loss P:
With above-mentioned AC sinusoidal voltage source output power P
1Deduct above-mentioned wound-rotor motor declared working condition copper loss P
2, obtain wound-rotor motor declared working condition iron loss P.
2. wound-rotor motor declared working condition iron loss measuring method according to claim 1 is characterized in that, the rated speed of the described prime mover of step 1 drags maintenance wound-rotor motor rotor winding open circuit in the process greater than the rated speed of wound-rotor motor.
3. wound-rotor motor declared working condition iron loss measuring method according to claim 1, it is characterized in that, the frequency of the sinusoidal voltage of the described AC sinusoidal voltage of step 2 source output equates that with the rated frequency of wound-rotor motor the effective value of the sinusoidal voltage of AC sinusoidal voltage source output equates with the rated voltage of wound-rotor motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245546.9A CN103323679B (en) | 2013-06-19 | 2013-06-19 | Method for measuring wound rotor type motor rated condition rated condition iron loss |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245546.9A CN103323679B (en) | 2013-06-19 | 2013-06-19 | Method for measuring wound rotor type motor rated condition rated condition iron loss |
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| CN103323679A true CN103323679A (en) | 2013-09-25 |
| CN103323679B CN103323679B (en) | 2015-07-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124860A (en) * | 2016-06-15 | 2016-11-16 | 晶傲威电气（常州）有限公司 | A kind of evaluation method of permanent-magnet brushless DC electric machine armature winding resistance resistance |
| CN109375102A (en) * | 2018-09-14 | 2019-02-22 | 西安交通大学 | The method for measuring the rotor copper loss as caused by harmonic wave under variable-frequency motor no-load condition |
| CN110441687A (en) * | 2019-08-19 | 2019-11-12 | 中车株洲电机有限公司 | The measurement method of double-fed wind power generator rotor iron loss, apparatus and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124860A (en) * | 2016-06-15 | 2016-11-16 | 晶傲威电气（常州）有限公司 | A kind of evaluation method of permanent-magnet brushless DC electric machine armature winding resistance resistance |
| CN109375102A (en) * | 2018-09-14 | 2019-02-22 | 西安交通大学 | The method for measuring the rotor copper loss as caused by harmonic wave under variable-frequency motor no-load condition |
| CN110441687A (en) * | 2019-08-19 | 2019-11-12 | 中车株洲电机有限公司 | The measurement method of double-fed wind power generator rotor iron loss, apparatus and system |
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| CN103323679B (en) | 2015-07-01 |
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Effective date of registration: 20180511 Address after: 226600 Jianghai West Road, Haian County, Nantong, Jiangsu 158 Patentee after: Jiangsu WELM Technology (Stock-Holding) Co., Ltd. Address before: No. 2, Mengxi Road, Zhenjiang, Jiangsu Province, Jiangsu Patentee before: Jiangsu University of Science and Technology |