CN103326661A - Method for identifying wound rotor type motor excitation resistance parameters - Google Patents
Method for identifying wound rotor type motor excitation resistance parameters Download PDFInfo
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- CN103326661A CN103326661A CN 201310245023 CN201310245023A CN103326661A CN 103326661 A CN103326661 A CN 103326661A CN 201310245023 CN201310245023 CN 201310245023 CN 201310245023 A CN201310245023 A CN 201310245023A CN 103326661 A CN103326661 A CN 103326661A
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- sinusoidal voltage
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Abstract
The invention discloses a method for identifying a wound rotor type motor excitation resistance parameter, and belongs to methods for identifying wound rotor type motor parameters. A prime motor is adopted to drag a wound rotor type motor rotor to rotate at the synchronous 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 wound rotor type motor excitation resistance parameter is obtained through the calculation of the power output power and the current effective value. According to the method for identifying the wound rotor type motor excitation resistance parameter, complex working procedures of artificial identification can be removed, the error caused by the complex working procedures is avoided, calculation is easy and identifying time is short.
Description
Technical field
The present invention relates to a kind of wound-rotor motor, relate in particular to a kind of wound-rotor motor excitation resistance parameter identification 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 elevator, crane, tower crane etc.Wound-rotor motor excitation resistance parameter to winding motor manufacture and design and move control significant.At present, known prior art is to obtain wound-rotor motor excitation resistance parameter by stall and no load test.Therefore, the identification time of prior art is long, workload is larger, be subject to operating personnel's subjective factor impact, and most uses scene does not have this actual measurement condition.Therefore, how fast and accurately the excitation resistance parameter of identification wound-rotor motor becomes the prior art problems to be solved.
Summary of the invention
The objective of the invention is to propose a kind of wound-rotor motor excitation resistance parameter identification method for the defective that prior art exists.
Wound-rotor motor excitation resistance parameter identification method of the present invention comprises the following steps:
Step 1: adopt prime mover to drag the wound-rotor motor rotor and rotate with leg speed with wound-rotor motor;
Step 2: the wound-rotor motor stator winding is connected the AC sinusoidal voltage source;
Step 3: adopt power sensor to measure the power output P that the AC sinusoidal voltage source obtains the AC sinusoidal voltage source;
Step 4: adopt current sensor measurement wound-rotor motor stator winding to obtain stator current effective value I;
Step 5; Calculate wound-rotor motor excitation resistance parameter
The effective value of the sinusoidal voltage of U AC sinusoidal voltage source output wherein.
The rated speed of the described prime mover of step 1 drags maintenance rotor winding open circuit in the process greater than the same leg speed of wound-rotor motor.
The frequency of the sinusoidal voltage of the described AC sinusoidal voltage of step 2 source output equates with the rated frequency of wound-rotor motor, and the effective value U of the sinusoidal voltage that export in the AC sinusoidal voltage source equates with the rated voltage of wound-rotor motor.
The present invention can save Artificial Cognition's loaded down with trivial details work and the error that causes thus, and calculates simply, and the identification time is few.
Description of drawings
Fig. 1 is identification system block diagram of the present invention.
Embodiment
As shown in Figure 1.Wound-rotor motor excitation resistance parameter identification of the present invention system, 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 in AC sinusoidal voltage source 101 respectively with the input of wound-rotor motor stator winding 102, the input of power sensor 105 connects, the input of the output termination identification unit 107 of power sensor 105, the input of the output termination current sensor 106 of wound-rotor motor stator winding 102, another input of the output termination identification unit 107 of current sensor 106, the input of the output termination wound-rotor motor rotor 104 of prime mover 103.
Narrate wound-rotor motor excitation resistance parameter identification 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 leg speed with wound-rotor motor;
The rated speed of prime mover drags maintenance rotor winding open circuit in the process greater than the same leg 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 with the rated frequency of wound-rotor motor, and the effective value U of the sinusoidal voltage that export in the AC sinusoidal voltage source 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;
Step 4: adopt current sensor measurement wound-rotor motor stator winding to obtain stator current effective value I;
Step 5; Calculate wound-rotor motor excitation resistance parameter
Claims (3)
1. a wound-rotor motor excitation resistance parameter identification method is characterized in that comprising the following steps:
Step 1: adopt prime mover to drag the wound-rotor motor rotor and rotate with leg speed with wound-rotor motor;
Step 2: the wound-rotor motor stator winding is connected the AC sinusoidal voltage source;
Step 3: adopt power sensor to measure the power output P that the AC sinusoidal voltage source obtains the AC sinusoidal voltage source;
Step 4: adopt current sensor measurement wound-rotor motor stator winding to obtain stator current effective value I;
Step 5; Calculate wound-rotor motor excitation resistance parameter
Wherein U is the effective value of the sinusoidal voltage of AC sinusoidal voltage source output.
2. wound-rotor motor excitation resistance parameter identification method according to claim 1 is characterized in that, the rated speed of the described prime mover of step 1 drags maintenance rotor winding open circuit in the process greater than the same leg speed of wound-rotor motor.
3. wound-rotor motor excitation resistance parameter identification 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 with the rated frequency of wound-rotor motor, and the effective value U of the sinusoidal voltage that export in the AC sinusoidal voltage source equates with the rated voltage of wound-rotor motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310245023 CN103326661A (en) | 2013-06-19 | 2013-06-19 | Method for identifying wound rotor type motor excitation resistance parameters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310245023 CN103326661A (en) | 2013-06-19 | 2013-06-19 | Method for identifying wound rotor type motor excitation resistance parameters |
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| CN103326661A true CN103326661A (en) | 2013-09-25 |
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| CN 201310245023 Pending CN103326661A (en) | 2013-06-19 | 2013-06-19 | Method for identifying wound rotor type motor excitation resistance parameters |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353220A (en) * | 2015-11-26 | 2016-02-24 | 昆明电器科学研究所 | Identification method for electric performance parameter of three-phase asynchronous motor |
| CN105743310A (en) * | 2014-12-07 | 2016-07-06 | 中国石油化工股份有限公司 | DC generator |
-
2013
- 2013-06-19 CN CN 201310245023 patent/CN103326661A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105743310A (en) * | 2014-12-07 | 2016-07-06 | 中国石油化工股份有限公司 | DC generator |
| CN105743310B (en) * | 2014-12-07 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of dc generator |
| CN105353220A (en) * | 2015-11-26 | 2016-02-24 | 昆明电器科学研究所 | Identification method for electric performance parameter of three-phase asynchronous motor |
| CN105353220B (en) * | 2015-11-26 | 2018-04-10 | 昆明电器科学研究所 | The discrimination method of threephase asynchronous electric parameters |
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Application publication date: 20130925 |