CN1818703A - Motor temperature-raising experimental method and device - Google Patents
Motor temperature-raising experimental method and device Download PDFInfo
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- CN1818703A CN1818703A CN 200610031285 CN200610031285A CN1818703A CN 1818703 A CN1818703 A CN 1818703A CN 200610031285 CN200610031285 CN 200610031285 CN 200610031285 A CN200610031285 A CN 200610031285A CN 1818703 A CN1818703 A CN 1818703A
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Abstract
A temperature rising test method of motor includes series-setting transformer, rectifier, inverter and filter in sequence between power supply and motor to be tested; connecting pulse control input end of inverter to control pulse output end of control unit, superposing two sine wave signals with different frequency then crossing them with triangle carrier to form PWM signal being used as pulse control signal of inverter to make output voltage basic composition of inverter be superposition of two sine voltage with the same frequency of control signal and to make two frequency-composition voltage contained in output voltage of inverter be able to be adjusted .
Description
Technical field
The present invention relates to a kind of motor test method and apparatus, particularly a kind of motor temperature-raising experimental method and device.
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 motor temperature-raising experimental method and device, and it can produce the folded required voltage of method motor temperature-raising experiment frequently with a frequency converter.And traditional test method is to produce required trial voltage with the heavy synchronous generator unit of two covers.System effectiveness height of the present invention, energy-saving effect is remarkable.
A kind of motor temperature-raising experimental method, it is connected in series in inverter between power supply and the tested motor, and the pulse control input end of inverter links to each other with the gating pulse output terminal of a control module;
The generation pwm signal is intersected as modulating wave and triangular wave carrier in sine wave signal stack back that will two kinds of different frequencies, 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 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, and the output voltage of inverter is applied to folds method motor temperature-raising experiment frequently on the tested voltage.
Its device comprises inverter 4 and control module 5, wherein inverter 4 is connected in series between power supply and the tested motor, described control module 5 is by primary sinusoid generator 6, second sine-wave generator 7, triangular-wave generator 8, first superimposer 9, second superimposer 10 and pwm signal generator 11 constitute, produce the primary sinusoid generator 6 of different frequency respectively, second sine-wave generator 7 links to each other with two input ends of first superimposer 9, the output terminal of first superimposer 9 links to each other with the modulation signal input end of second superimposer 10, and the carrier wave input end of second superimposer 10 links to each other with the triangular wave output terminal of triangular-wave generator 8; The output terminal of second superimposer 10 links to each other with pwm signal generator 11, and the gating pulse output terminal of pwm signal generator 11 is corresponding with the pulse control input end of inverter 4 to link to each other.
Pwm signal is a pulse width modulating signal, and inverter refers to the circuit of inverter circuit except that pulse control unit (sometimes containing pulse driver unit).
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;
Fig. 3 is the principle schematic of another embodiment of the present invention.
Embodiment
Embodiment one: as shown in Figure 1.
A kind of motor temperature-raising experimental method, it is connected in series in inverter between power supply and the tested motor, and the pulse control input end of inverter links to each other with the gating pulse output terminal of a control module;
The generation pwm signal is intersected as modulating wave and triangular wave carrier in sine wave signal stack back that will two kinds of different frequencies, 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 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, and the output voltage of inverter is applied to folds method motor temperature-raising experiment frequently on the tested voltage.
Its device as shown in Figure 1, it is characterized in that it comprises inverter 4 and control module 5, wherein inverter 4 is connected in series between power supply and the tested motor, described control module 5 is by primary sinusoid generator 6, second sine-wave generator 7, triangular-wave generator 8, first superimposer 9, second superimposer 10 and pwm signal generator 11 constitute, produce the primary sinusoid generator 6 of different frequency respectively, second sine-wave generator 7 links to each other with two input ends of first superimposer 9, the output terminal of first superimposer 9 links to each other with the modulation signal input end of second superimposer 10, and the carrier wave input end of second superimposer 10 links to each other with the triangular wave output terminal of triangular-wave generator 8; The output terminal of second superimposer 10 links to each other with pwm signal generator 11, and the gating pulse output terminal of pwm signal generator 11 is corresponding with the pulse control input end of inverter 4 to link to each other.
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.
Embodiment two: as shown in Figure 3.
A kind of motor temperature-raising experimental method, it is connected in series in transformer, rectifier, inverter and wave filter between power supply and the tested motor successively, and the pulse control input end of inverter links to each other with the gating pulse output terminal of a control module;
The generation pwm signal is intersected as modulating wave and triangular wave carrier in sine wave signal stack back that will two kinds of different frequencies, 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 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, and the output voltage of inverter is applied to folds method motor temperature-raising experiment frequently on the tested voltage.
Its device as shown in Figure 3, it comprises transformer 1, wave filter 2, rectifier 3, inverter 4 and control module 5, wherein transformer 1, rectifier 3, inverter 4, wave filter 2 is connected in series between power supply and the tested motor successively, described control module 5 is by primary sinusoid generator 6, second sine-wave generator 7, triangular-wave generator 8, first superimposer 9, second superimposer 10 and pwm signal generator 11 constitute, produce the primary sinusoid generator 6 of different frequency respectively, second sine-wave generator 7 links to each other with two input ends of first superimposer 9, the output terminal of first superimposer 9 links to each other with the modulation signal input end of second superimposer 10, and the carrier wave input end of second superimposer 10 links to each other with the triangular wave output terminal of triangular-wave generator 8; The output terminal of second superimposer 10 links to each other with pwm signal generator 11, and the gating pulse output terminal of pwm signal generator 11 is corresponding with the pulse control input end of inverter 4 to link to each other.
Its principle of work is identical with embodiment one with effect.
Claims (3)
1, a kind of motor temperature-raising experimental method is characterized in that it is connected in series in inverter between power supply and the tested motor, and the pulse control input end of inverter links to each other with the gating pulse output terminal of a control module;
The generation pwm signal is intersected as modulating wave and triangular wave carrier in sine wave signal stack back that will two kinds of different frequencies, 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 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, and the output voltage of inverter is applied to folds method motor temperature-raising experiment frequently on the tested voltage.
2, a kind of motor temperature-raising experiment device according to claim 1, it is characterized in that it comprises inverter (4) and control module (5), wherein inverter (4) is connected in series between power supply and the tested motor, described control module (5) is by primary sinusoid generator (6), second sine-wave generator (7), triangular-wave generator (8), first superimposer (9), second superimposer (10) and pwm signal generator (11) constitute, produce the primary sinusoid generator (6) of different frequency respectively, second sine-wave generator (7) links to each other with two input ends of first superimposer (9), the output terminal of first superimposer (9) links to each other with the modulation signal input end of second superimposer (10), and the carrier wave input end of second superimposer (10) links to each other with the triangular wave output terminal of triangular-wave generator (8); The output terminal of second superimposer (10) links to each other with pwm signal generator (11), and the gating pulse output terminal of pwm signal generator (11) is corresponding with the pulse control input end of inverter (4) to link to each other.
3, according to a kind of motor temperature-raising experiment device of claim 2, it is characterized in that it also comprises transformer (1), rectifier (3) and wave filter (2), wherein transformer (1), rectifier (3), inverter (4), wave filter (2) are connected in series between power supply and the tested motor successively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610031285 CN1818703A (en) | 2006-03-01 | 2006-03-01 | Motor temperature-raising experimental method and device |
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| CN 200610031285 CN1818703A (en) | 2006-03-01 | 2006-03-01 | Motor temperature-raising experimental method and device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221673A (en) * | 2011-03-11 | 2011-10-19 | 哈尔滨工业大学 | Method for testing copper loss and temperature rise of multi-phase high-power low-speed permanent magnet synchronous motor |
| CN102661818A (en) * | 2012-05-23 | 2012-09-12 | 李健忠 | Temperature rise measurement method for submersible motor |
| CN102841314A (en) * | 2012-09-21 | 2012-12-26 | 南车株洲电力机车研究所有限公司 | Temperature rise test method and system for electrically excited synchronous motors |
| CN102854466A (en) * | 2012-09-11 | 2013-01-02 | 南车株洲电力机车研究所有限公司 | Temperature rise testing device and temperature rise testing method for alternating-current motor |
| CN104730402A (en) * | 2015-04-17 | 2015-06-24 | 山东电力设备有限公司 | Device for performing temperature-rise test on voltage regulating transformer and compensating transformer simultaneously |
| CN104808148A (en) * | 2015-05-07 | 2015-07-29 | 哈尔滨工业大学 | Temperature rise test method for multiphase multi-unit permanent magnet motor |
| 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 |
| CN112865585A (en) * | 2021-02-05 | 2021-05-28 | 郑州轻工业大学 | Method for outputting double-frequency sine wave by single inverter at fixed pulse frequency |
| CN115184687A (en) * | 2022-07-27 | 2022-10-14 | 东北大学 | Dynamic test system for weak capacitance detection of flat-plate capacitive MEMS sensor |
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2006
- 2006-03-01 CN CN 200610031285 patent/CN1818703A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221673A (en) * | 2011-03-11 | 2011-10-19 | 哈尔滨工业大学 | Method for testing copper loss and temperature rise of multi-phase high-power low-speed permanent magnet synchronous motor |
| CN102221673B (en) * | 2011-03-11 | 2013-05-22 | 哈尔滨工业大学 | Method for testing copper loss and temperature rise of multi-phase high-power low-speed permanent magnet synchronous motor |
| CN102661818A (en) * | 2012-05-23 | 2012-09-12 | 李健忠 | Temperature rise measurement method for submersible motor |
| CN102854466A (en) * | 2012-09-11 | 2013-01-02 | 南车株洲电力机车研究所有限公司 | Temperature rise testing device and temperature rise testing method for alternating-current motor |
| CN102841314A (en) * | 2012-09-21 | 2012-12-26 | 南车株洲电力机车研究所有限公司 | Temperature rise test method and system for electrically excited synchronous motors |
| 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 |
| CN104730402A (en) * | 2015-04-17 | 2015-06-24 | 山东电力设备有限公司 | Device for performing temperature-rise test on voltage regulating transformer and compensating transformer simultaneously |
| CN104808148A (en) * | 2015-05-07 | 2015-07-29 | 哈尔滨工业大学 | Temperature rise test method for multiphase multi-unit permanent magnet motor |
| CN104808148B (en) * | 2015-05-07 | 2017-10-24 | 哈尔滨工业大学 | A kind of method of testing of multiphase multiple-unit magneto temperature rise |
| CN112865585A (en) * | 2021-02-05 | 2021-05-28 | 郑州轻工业大学 | Method for outputting double-frequency sine wave by single inverter at fixed pulse frequency |
| CN115184687A (en) * | 2022-07-27 | 2022-10-14 | 东北大学 | Dynamic test system for weak capacitance detection of flat-plate capacitive MEMS sensor |
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