CN105652128B - A kind of novel high-voltage frequency converter burn-in test platform - Google Patents
A kind of novel high-voltage frequency converter burn-in test platform Download PDFInfo
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- CN105652128B CN105652128B CN201610143222.8A CN201610143222A CN105652128B CN 105652128 B CN105652128 B CN 105652128B CN 201610143222 A CN201610143222 A CN 201610143222A CN 105652128 B CN105652128 B CN 105652128B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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Abstract
The invention discloses a kind of novel high-voltage frequency converter burn-in test platforms, include the input switch QF1 for accessing and being sequentially connected in series from power grid inlet wire, high-voltage variable frequency power source, output filter reactor L1, input switch QF2, the testboard position for assembling tested high-voltage frequency converter, grid-connected reactor L2, and grid-connected switch QF3 and control system, the both ends grid-connected switch QF3 are connect with the output end of the output end of output filter reactor L1, grid-connected reactor L2 respectively；The control system is used to control input switch QF1, input switch QF2 and the on off state of grid-connected switch QF3 switches, and control is tested amplitude, frequency and Phase Tracking the high-voltage variable frequency power source output of high-voltage frequency converter output voltage.This high-voltage frequency converter burn-in test platform can be universally used in the high-voltage frequency converter of different model, and test platform can provide specific main power source, and within 3%, the voltage class and frequency of main power source can be realized stepless adjustable harmonic content.
Description
Technical field
The present invention relates to high frequency transformer, especially a kind of novel high-voltage frequency converter burn-in test platform.
Background technology
With the development of power electronic technique, high-voltage frequency converter is widely used to electric power, metallurgy, petrochemical industry, tap water, coal
The fields such as charcoal save a large amount of electric energy, create considerable economic benefit and social benefit.And current high-voltage frequency converter
Just develop towards high-power, diversification direction, how to meet the high voltage variable of different voltages grade, different frequency and different capabilities
The full power test of frequency device manufacture is the problem put before us, it is necessary to develop new test platform.
Domestic universal high-voltage frequency converter burn-in test platform is mainly specific voltage grade and specific frequency at present
The motor that frequency converter band adapts to therewith, and both at home and abroad high-voltage frequency converter voltage class mainly have 3kV, 4.16kV, 6kV,
10kV, frequency have 50Hz or 60Hz, and test platform is in order to adapt to the test of the high-voltage frequency converter of different model, often through boosting
Transformer or step-down transformer provide the main power source of corresponding voltage grade to the high-voltage frequency converter of different model, under this mode
The frequency of main power source can not be adjusted, and can not fully meet the test request of different model high-voltage frequency converter.In addition domestic high voltage variable
The load motor of frequency device test platform is generally 50Hz, and the high-voltage frequency converter operating condition in certain export projects is
4.16kV, 60Hz are adjustable, and the load motor of test platform can not be completely matching.
Invention content
In order to solve the above technical problems, the object of the present invention is to provide a kind of novel high-voltage frequency converter burn-in tests to put down
Platform.
The technical solution adopted by the present invention is：
A kind of novel high-voltage frequency converter burn-in test platform includes that the input for accessing and being sequentially connected in series from power grid inlet wire is opened
Close QF1, high-voltage variable frequency power source, output filter reactor L1, input switch QF2, the test for assembling tested high-voltage frequency converter
Platform position, grid-connected reactor L2 and grid-connected switch QF3 and control system, the both ends grid-connected switch QF3 respectively with output filtered electrical
The output end connection of the output end of anti-device L1, grid-connected reactor L2；The control system is for controlling input switch QF1, input
The on off state of switch QF2 and grid-connected switch QF3 switches, and control is tested amplitude, the frequency of high-voltage frequency converter output voltage
And amplitude, frequency and the phase of Phase Tracking high-voltage variable frequency power source output voltage.
Further, the control system includes sequentially connected touch screen and/or DCS, PLC, master control borad and optical communication
Daughter board, uses RS232 serial communications between PLC and master control borad, touch screen and/or DCS for input running frequency to PLC and by
PLC feeds back to master control borad, and PLC is additionally operable to control input switch QF1, input switch QF2 and the on off state of grid-connected switch QF3 and cuts
It changes, the amplitude, frequency and Phase Tracking that master control borad is used to be tested high-voltage frequency converter output voltage by the control of optical communication daughter board are high
Amplitude, frequency and the phase of voltage variable-frequency power supply output voltage, the optical communication daughter board is using optical fiber and tested high-voltage frequency converter
All unit control panel communications.
Further, the master control borad includes sequentially connected FPGA, DSP and pulse administrative unit；FPGA is connect with PLC
And for the sampling of high-voltage variable frequency power source output voltage, sampling, locking phase and the locking phase of tested high-voltage frequency converter output voltage and electric current
Success judges；DSP be used for according to FPGA be transmitted through come frequency and phase data, in real time adjust be tested high-voltage frequency converter output frequently
Rate achievees the purpose that phase modulation, and same frequently with the base of phase with high-voltage variable frequency power source voltage in tested high-voltage frequency converter output voltage
Under plinth, the amplitude of DSP outputs is adjusted so that voltage of the output voltage of high-voltage frequency converter as close as high-voltage variable frequency power source
Amplitude；Pulse administrative unit is responsible for generating three-phase PWM drive signal and is transferred to optical communication daughter board, and then acts on tested high pressure
Frequency converter.
Further, the locking phase of the FPGA includes the following steps：It samples bicyclic decoupling output and is tested high-voltage frequency converter output
The positive sequence q axis components of voltage, positive sequence q axis components are compared after PI controls with given angular frequency, using integral ring
Section 1/s obtains locking phase angle.
Beneficial effects of the present invention：
1）This high-voltage frequency converter burn-in test platform can be universally used in the high-voltage frequency converter of different model, and test platform can provide
Specific main power source, within 3%, the voltage class and frequency of main power source can be realized stepless adjustable harmonic content；
2）The loss of this high-voltage frequency converter burn-in test platform energy is less, it can be achieved that energy recycling, external electrical network is only
Need the loss to system supplement frequency converter and reactor；
3）High-voltage frequency converter in this test platform may operate at 50Hz or 60Hz and carry out grid-connected feedback, after grid-connected
Aging current is voluntarily set；
4）This high-voltage frequency converter test platform is flexible and convenient to use, versatile, at low cost, occupancy is small.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiment of the present invention, rather than is all implemented
Example, those skilled in the art is under the premise of description of the drawings, other design schemes and attached drawing of acquisition：
Fig. 1 is the control principle drawing of high-voltage frequency converter burn-in test platform of the present invention；
Fig. 2 is the control system architecture schematic diagram of high-voltage frequency converter burn-in test platform of the present invention；
Fig. 3 is principle of phase lock loop figure of the present invention.
Specific implementation mode
Referring to Fig.1 shown in-Fig. 2, for a kind of novel high-voltage frequency converter burn-in test platform of the present invention, including from power grid
Inlet wire access and be sequentially connected in series input switch QF1, high-voltage variable frequency power source, output filter reactor L1, input switch QF2, use
It is tested testboard position, grid-connected reactor L2 and the grid-connected switch QF3 and control system of high-voltage frequency converter in assembly, this is grid-connected
The both ends switch QF3 are connect with the output end of the output end of output filter reactor L1, grid-connected reactor L2 respectively；The control system
It unites and switches for controlling input switch QF1, input switch QF2 and the on off state of grid-connected switch QF3, and control is tested high pressure
The amplitude of frequency converter output voltage, amplitude, frequency and the phase of frequency and Phase Tracking high-voltage variable frequency power source output voltage.
Concrete principle is：Network voltage is sent to high-voltage variable frequency power source by input switch QF1, the output of this high-voltage variable frequency power source
Voltage class and frequency can realize, high-voltage variable frequency power source output waveform filtered electricity stepless adjustable from 0-10kV, 0-60Hz
The pure sine wave of output three-phase after anti-device L1 filtering, it can be directly as communication power supply, this main power source passes through high pressure
Tested high-voltage frequency converter is sent into after frequency converter input switch QF2, the model of this high-voltage frequency converter can be selected arbitrarily, be tested high pressure
Amplitude, frequency and the phase of frequency converter output voltage need to track the amplitude, frequency and phase of high-voltage variable frequency power source output voltage, protect
Hold fully synchronized grid-connected by grid-connected reactor L2 and grid-connected switch QF3 later, realization energy recycling, high-voltage variable frequency power source
High-voltage frequency converter and reactor own loss only need to be supplemented to system.
The control system includes sequentially connected touch screen and/or DCS, PLC, master control borad and optical communication daughter board, PLC
RS232 serial communications, touch screen and/or DCS is used to be fed back to PLC and by PLC for inputting running frequency between master control borad
To master control borad, PLC is additionally operable to control input switch QF1, the on off state of input switch QF2 and grid-connected switch QF3 switches, master control
Plate is used to be tested the amplitude, frequency and Phase Tracking high-pressure frequency-conversion electricity of high-voltage frequency converter output voltage by the control of optical communication daughter board
Amplitude, frequency and the phase of source output voltage, the optical communication daughter board use all units of optical fiber and tested high-voltage frequency converter
Control panel communicates.
Wherein, the master control borad includes sequentially connected FPGA, DSP and pulse administrative unit；FPGA is connect simultaneously with PLC
For the sampling of high-voltage variable frequency power source output voltage, tested high-voltage frequency converter output voltage and electric current sampling, locking phase and locking phase at
Work(judges；DSP be used for according to FPGA be transmitted through come frequency and phase data, in real time adjust be tested high-voltage frequency converter output frequently
Rate achievees the purpose that phase modulation, and same frequently with the base of phase with high-voltage variable frequency power source voltage in tested high-voltage frequency converter output voltage
Under plinth, the amplitude of DSP outputs is adjusted so that voltage of the output voltage of high-voltage frequency converter as close as high-voltage variable frequency power source
Amplitude；Pulse administrative unit is responsible for generating three-phase PWM drive signal and is transferred to optical communication daughter board, and then acts on tested high pressure
Frequency converter, while the state of each unit is obtained, if unit is faulty to make corresponding processing（Bypass）, and operating mode and event
Barrier situation is reported to PLC.
As shown in figure 3, the locking phase of FPGA includes the following steps：It samples bicyclic decoupling output and is tested high-voltage frequency converter output electricity
The positive sequence q axis components of pressure, positive sequence q axis components are compared after PI controls with given angular frequency, using integral element
1/s obtains locking phase angle.
The foregoing is merely the preferred embodiments of the present invention, and the present invention is not limited to the above embodiments, as long as with
Essentially identical means realize that the technical solution of the object of the invention belongs within protection scope of the present invention.
Claims (4)
1. a kind of novel high-voltage frequency converter burn-in test platform, it is characterised in that：Including accessing from power grid inlet wire and going here and there successively
The input switch QF1 of connection, high-voltage variable frequency power source, filter reactor L1, input switch QF2 are exported, for assembling tested high voltage variable
The testboard position of frequency device, grid-connected reactor L2 and grid-connected switch QF3 and control system, the both ends grid-connected switch QF3 respectively with
Export the output end connection of the output end, grid-connected reactor L2 of filter reactor L1；The control system is opened for controlling input
It closes QF1, input switch QF2 and the on off state of grid-connected switch QF3 switches, and control is tested high-voltage frequency converter output voltage
Amplitude, frequency and the phase of amplitude, frequency and Phase Tracking high-voltage variable frequency power source output voltage.
2. a kind of novel high-voltage frequency converter burn-in test platform according to claim 1, it is characterised in that：The control
System includes sequentially connected touch screen and/or DCS, PLC, master control borad and optical communication daughter board, is used between PLC and master control borad
For inputting running frequency to PLC and feeding back to master control borad by PLC, PLC is also used by RS232 serial communications, touch screen and/or DCS
Switch in the on off state of control input switch QF1, input switch QF2 and grid-connected switch QF3, master control borad is for passing through optical communication
Daughter board control is tested the width of the amplitude of high-voltage frequency converter output voltage, frequency and Phase Tracking high-voltage variable frequency power source output voltage
Value, frequency and phase, the optical communication daughter board are communicated using optical fiber and all unit control panels of tested high-voltage frequency converter.
3. a kind of novel high-voltage frequency converter burn-in test platform according to claim 2, it is characterised in that：The master control
Plate includes sequentially connected FPGA, DSP and pulse administrative unit；FPGA connect with PLC and is used for high-voltage variable frequency power source output
Sampling, locking phase and the locking phase of voltage sample, tested high-voltage frequency converter output voltage and electric current successfully judge；DSP is used for basis
FPGA is transmitted through the frequency and phase data come, and adjusts the output frequency for being tested high-voltage frequency converter in real time, achievees the purpose that phase modulation, with
And under basis of the tested high-voltage frequency converter output voltage with high-voltage variable frequency power source voltage with frequency with phase, adjust the width of DSP outputs
Value so that voltage magnitude of the output voltage of high-voltage frequency converter close to high-voltage variable frequency power source；Pulse administrative unit is responsible for generation three
Phase PWM drive signal is simultaneously transferred to optical communication daughter board, and then acts on tested high-voltage frequency converter.
4. a kind of novel high-voltage frequency converter burn-in test platform according to claim 3, it is characterised in that：The FPGA
Locking phase include the following steps：Sample the positive sequence q axis components that bicyclic decoupling output is tested high-voltage frequency converter output voltage, positive sequence q
Axis component is compared after PI controls with given angular frequency, and locking phase angle is obtained using integral element 1/s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610143222.8A CN105652128B (en) | 2016-03-14 | 2016-03-14 | A kind of novel high-voltage frequency converter burn-in test platform |
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| CN201610143222.8A CN105652128B (en) | 2016-03-14 | 2016-03-14 | A kind of novel high-voltage frequency converter burn-in test platform |
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| CN105652128A CN105652128A (en) | 2016-06-08 |
| CN105652128B true CN105652128B (en) | 2018-08-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107817452A (en) * | 2016-08-31 | 2018-03-20 | 天津瑞能电气有限公司 | Reactor platform is used in a kind of wind-power electricity generation frequency conversion device complete machine detection |
| CN106556762B (en) * | 2016-11-30 | 2019-12-24 | 广东明阳龙源电力电子有限公司 | Control method for aging test of cascaded high-voltage frequency converter |
| CN109739147A (en) * | 2019-01-22 | 2019-05-10 | 广东美的暖通设备有限公司 | Control equipment, control method and computer readable storage medium |
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| TW201326860A (en) * | 2011-12-23 | 2013-07-01 | Delta Electronics Shanghai Co | A load test system for an inverter |
| CN104034981A (en) * | 2014-06-18 | 2014-09-10 | 上海吉亿电机有限公司 | Self-circulation aging test system and test method for frequency converter |
| CN104849588A (en) * | 2015-05-05 | 2015-08-19 | 河南职业技术学院 | Test system for frequency converters |
| CN205720456U (en) * | 2016-03-14 | 2016-11-23 | 广东明阳龙源电力电子有限公司 | A kind of novel high voltage converter burn-in test platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055347A (en) * | 2010-07-22 | 2011-05-11 | 荣信电力电子股份有限公司 | Modular multilevel converter (MMC)-based transformer-free four-quadrant high-voltage variable frequency power supply topological structure |
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- 2016-03-14 CN CN201610143222.8A patent/CN105652128B/en active Active
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| TW201326860A (en) * | 2011-12-23 | 2013-07-01 | Delta Electronics Shanghai Co | A load test system for an inverter |
| CN104034981A (en) * | 2014-06-18 | 2014-09-10 | 上海吉亿电机有限公司 | Self-circulation aging test system and test method for frequency converter |
| CN104849588A (en) * | 2015-05-05 | 2015-08-19 | 河南职业技术学院 | Test system for frequency converters |
| CN205720456U (en) * | 2016-03-14 | 2016-11-23 | 广东明阳龙源电力电子有限公司 | A kind of novel high voltage converter burn-in test platform |
Non-Patent Citations (1)
| Title |
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| 高压变频器同步投切功能的研究;徐卫青等;《电工电气》;20141231(第1期);16-19 * |
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