CN1818704A - Use of frequency transformer for motor temperature-raising experiment - Google Patents
Use of frequency transformer for motor temperature-raising experiment Download PDFInfo
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- CN1818704A CN1818704A CN 200610031286 CN200610031286A CN1818704A CN 1818704 A CN1818704 A CN 1818704A CN 200610031286 CN200610031286 CN 200610031286 CN 200610031286 A CN200610031286 A CN 200610031286A CN 1818704 A CN1818704 A CN 1818704A
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- motor temperature
- frequency converter
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- frequency
- frequency transformer
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Abstract
A frequency converter used in temperature rising test of motor is connected in series between power supply and motor to be tested .It features that two sine voltage superposition is contained in basic composition of frequency transformer output voltage.
Description
Technical field
The present invention relates to the purposes that a kind of frequency converter is used for motor temperature-raising experiment.
Background technology
Traditional folded frequency method motor temperature-raising experiment adopts two cover three-phase synchronous generator groups, and the voltage of output and frequency are respectively U1, f1, U2, f2.Require two terminals of each phase stator winding of one of them synchronous generator all to extract.After the threephase stator winding of two synchronous generators is connected respectively (as shown in Figure 2), give tested motor power supply again.It needs support equipments such as two synchronous generator units and excitation, and system complex involves great expense.
Summary of the invention
The objective of the invention is to provide a kind of frequency converter to be used for the purposes of motor temperature-raising experiment, it is compared with the traditional experiment method, reduces the heavy synchronous generator unit of two covers, and a frequency converter produces pilot system efficient height, and energy-saving effect is remarkable.
A kind of frequency converter is used for the purposes of motor temperature-raising experiment, and it is connected in series in frequency converter between power supply and the tested motor.The basis of the output voltage of frequency converter comprises two sinusoidal voltage stacks.
The voltage of method motor temperature-raising experiment is produced by a frequency converter owing to fold frequently, and its output voltage is applied on the test motor and carries out temperature rise test, and the folded test frequently of its effect and tradition is suitable; Compare with the traditional experiment method, save the heavy synchronous generator unit of two covers, system constitutes simple, low cost, and maintenance cost is low.Pilot system efficient height, energy-saving effect is remarkable.
Description of drawings
Fig. 1 is a principle of the invention synoptic diagram;
Fig. 2 traditional experiment method synoptic diagram;
Embodiment
It is connected in series in frequency converter between power supply and the tested motor.The basis of the output voltage of frequency converter comprises two sinusoidal voltage stacks.Frequency converter intersects the generation pwm signal with the sine wave signal of two kinds of different frequencies stack back as modulating wave and triangular wave carrier, the frequency of these two kinds of sine wave signals and amplitude can independent regulation; With the pulse control signal of described pwm signal as frequency converter inside inverter, the basis that makes inverter output voltage also is the stack of two sinusoidal voltages identical with the control signal frequency, and the voltage of two kinds of frequency contents that inverter output voltage comprised can be regulated.Pwm signal is a pulse width modulating signal.
The present invention folds frequently, and the voltage of method motor temperature-raising experiment is produced by a frequency converter, the sine wave signal of two kinds of different frequencies (f1 and f2) stack back is intersected as modulating wave and triangular wave carrier and is produced the work of pwm signal control inverter in control system, thereby the basis that realizes inverter output voltage also is the stack composition of two sinusoidal voltages identical with the control signal frequency; The frequency f 1 of two kinds of sinusoidal signals and f2 can independent regulation in control system, the amplitude of sine wave signal also can independent regulation, thereby the voltage of two kinds of frequency contents that the control inverter output voltage is comprised also can be regulated; Inverter output voltage is applied to test carries out temperature rise test on the motor, its effect and the folded test frequently of tradition are quite; Compare with the traditional experiment method, save the heavy synchronous generator unit of two covers, system constitutes simple, low cost.Pilot system efficient height, energy-saving effect is remarkable.
Claims (1)
1, the basis of output voltage comprises the frequency converter of two sinusoidal voltage stacks, it is characterized in that it is used for motor temperature-raising experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610031286 CN1818704A (en) | 2006-03-01 | 2006-03-01 | Use of frequency transformer for motor temperature-raising experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610031286 CN1818704A (en) | 2006-03-01 | 2006-03-01 | Use of frequency transformer for motor temperature-raising experiment |
Publications (1)
| Publication Number | Publication Date |
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| CN1818704A true CN1818704A (en) | 2006-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200610031286 Pending CN1818704A (en) | 2006-03-01 | 2006-03-01 | Use of frequency transformer for motor temperature-raising experiment |
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| CN (1) | CN1818704A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974308A (en) * | 2015-03-13 | 2016-09-28 | 财团法人工业技术研究院 | Motor efficiency analysis method for motor frequency converter |
| CN104670043B (en) * | 2013-11-28 | 2017-02-15 | 中车大连电力牵引研发中心有限公司 | Traction motor modulating method and traction motor modulating device |
| CN106980087A (en) * | 2017-05-10 | 2017-07-25 | 中冶京诚工程技术有限公司 | The test system and method for a kind of VFC machine, variable-frequency motor |
| CN108132436A (en) * | 2016-11-30 | 2018-06-08 | 西门子（中国）有限公司 | Frequency conversion control unit, motor fold frequency temperature rise test system and method |
-
2006
- 2006-03-01 CN CN 200610031286 patent/CN1818704A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104670043B (en) * | 2013-11-28 | 2017-02-15 | 中车大连电力牵引研发中心有限公司 | Traction motor modulating method and traction motor modulating device |
| CN105974308A (en) * | 2015-03-13 | 2016-09-28 | 财团法人工业技术研究院 | Motor efficiency analysis method for motor frequency converter |
| CN105974308B (en) * | 2015-03-13 | 2018-12-14 | 财团法人工业技术研究院 | Motor efficiency analysis method for motor frequency converter |
| CN108132436A (en) * | 2016-11-30 | 2018-06-08 | 西门子（中国）有限公司 | Frequency conversion control unit, motor fold frequency temperature rise test system and method |
| CN108132436B (en) * | 2016-11-30 | 2021-01-05 | 西门子（中国）有限公司 | Variable frequency control unit, motor frequency superposition temperature rise test system and method |
| CN106980087A (en) * | 2017-05-10 | 2017-07-25 | 中冶京诚工程技术有限公司 | The test system and method for a kind of VFC machine, variable-frequency motor |
| CN106980087B (en) * | 2017-05-10 | 2019-08-02 | 中冶京诚工程技术有限公司 | The test macro and method of a kind of frequency control machine, variable-frequency motor |
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