CN104297701B - The shut-off test platform and its method of single bridge arm in three level H-bridge inverters - Google Patents
The shut-off test platform and its method of single bridge arm in three level H-bridge inverters Download PDFInfo
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- CN104297701B CN104297701B CN201410474715.0A CN201410474715A CN104297701B CN 104297701 B CN104297701 B CN 104297701B CN 201410474715 A CN201410474715 A CN 201410474715A CN 104297701 B CN104297701 B CN 104297701B
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Abstract
The invention discloses any one bridge arm to be measured, pressure regulator, rectifier bridge, reactor, current Hall, test control panel and the man-machine interface being connected with test control panel in a kind of shut-off test platform of the single bridge arm in three level H-bridges inverter and its method, including three level H-bridge power models；The output end of pressure regulator is connected with rectifier bridge；The dc bus of three level H-bridge power models is connected with the direct current output of rectifier bridge；The exchange outlet of bridge arm to be measured in three level H-bridge power models is connected with one end of reactor, and the other end of reactor is connected through current Hall and with the midpoint of the DC capacitor in three level H-bridge power models；Current Hall is also connected with test control panel；Test control panel is connected by optical fiber with three level H-bridge power models.When can avoid due to individually triggering positive sequence or negative-sequence current, another half branch electric capacity can be charged, the situation for causing upper and lower half branch capacity unmbalance and can not obtaining accurate measurement data occurs.
Description
Technical field
It is the single bridge being related in a kind of three level H-bridges inverter more specifically the present invention relates to power electronics neighborhood
The shut-off test platform and its method of arm.
Background technology
The progress of Adjoint technology, largely should by the power electronic equipment of three level H-bridge topology formations in transmission and distribution networkses
With the voltage class and capacity for constituting the power model of these equipment are also increasing.To power model carry out rated capacity and
The test of performance is also more and more difficult.The performance of three level H-bridge inverters is tested for convenience, and reduces testing cost, because
This, in the market is badly in need of the shut-off test platform and its method of a kind of single bridge arm being directed in three level H-bridge inverters.
The content of the invention
For defect present in prior art, it is an object of the invention to provide the list in a kind of three level H-bridges inverter
The shut-off test platform and its method of individual bridge arm.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
There is provided a kind of shut-off of the single bridge arm in three level H-bridges inverter test according to the first aspect of the invention
Platform,
Including any one bridge arm to be measured, pressure regulator, rectifier bridge, reactor, electric current in three level H-bridge power models suddenly
That, test control panel and the man-machine interface being connected with the test control panel；The input of the pressure regulator is exchanged with 380V
It is connected, the output end of the pressure regulator is connected with the rectifier bridge；The dc bus of the three level H-bridges power model and rectification
The direct current output of bridge is connected；The exchange outlet of bridge arm to be measured in the three level H-bridges power model and one end phase of reactor
Even, the other end of reactor is connected through current Hall and with the midpoint of the DC capacitor in the three level H-bridges power model；
The current Hall is also connected with test control panel；The test control panel passes through optical fiber and the three level H-bridges power model
It is connected.
According to the second aspect of the invention, a kind of test for the shut-off test platform realized described in first aspect is additionally provided
Method,
Test control panel is by the way of forward-order current and negative-sequence current poll to the device for power switching on bridge arm to be measured
Carry out shut-off overvoltage test.
The shut-off test pulse sequential of the forward-order current is：
1100、t1、0100、t2、1100、t2、0100、t2、0000、t2、0100、t2、0000；
Wherein, the digit of tetrad code represents the first IGBT to the 4th in bridge arm to be measured successively from left to right
IGBT, 1 represents IGBT conductings, and 0 represents IGBT shut-offs, and t1 represents that three level H-bridge power model electric currents reach rated value
Time, t2=0.1*t1.
The shut-off test pulse sequential of the negative-sequence current is：
0011、t1、0010、t2、0011、t2、0010、t2、0000、t2、0010、t2、0000；
Wherein, the digit of tetrad code represents the first IGBT to the 4th in bridge arm to be measured successively from left to right
IGBT, 1 represents IGBT conductings, and 0 represents IGBT shut-offs, and t1 represents that three level H-bridge power model electric currents reach rated value
Time, t2=0.1*t1.
The time interval of forward-order current and the negative-sequence current poll is 5 seconds.
Compared with prior art, tested using the shut-off of the single bridge arm in a kind of three level H-bridges inverter of the present invention
Platform and its method, when can avoid due to individually triggering positive sequence or negative-sequence current, can charge to another half branch electric capacity, cause
Upper and lower half branch capacity unmbalance and can not obtain accurate measurement data situation occur.
Brief description of the drawings
Fig. 1 is the connection diagram of embodiments of the invention；
Fig. 2 is the principle schematic of the shut-off test circuit of embodiments of the invention；
Fig. 3 is the driving pulse sequence diagram of embodiments of the invention；
Fig. 4 is the shut-off test forward-order current commutation course schematic diagram of embodiments of the invention；
Fig. 5 is the shut-off test negative-sequence current commutation course schematic diagram of embodiments of the invention.
Embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
Test platform as shown in Figure 1 and Figure 2, including three level H-bridge power model M1, pressure regulator TR, rectifier bridge Z1, electricity
Anti- device L, current Hall LEM, test control panel B1, man-machine interface H1.Wherein three level H-bridge power model M1 dc bus and
The direct current output of rectifier bridge is directly connected to；The exchange outlet of bridge arm to be measured is connected to reactor L, reactance in three level blocks
The other end of device is connected to the midpoint phase of DC capacitor C1, C2 in three level H-bridge power model M1 through current Hall LEM
Even；Current Hall LEM measurement signal introduces the test control panel B1 of testing and control platform；Test control panel B1 by optical fiber with
Three level H-bridge power model M1 communication interface is connected.,
Three level H-bridge power model M1 include two groups of circuit units and 2 DC capacitor C1, C2 connected in parallel,
Every group of circuit unit include the first IGBT to the 4th IGBTT1, T2, T3, T4 being sequentially connected and 2 clamp diode D5,
D6, each IGBT are additionally provided with and its antiparallel sustained diode 1, D2, D3, D4；Wherein, the first IGBT emitter stage and
Two IGBT colelctor electrode connection, the 2nd IGBT emitter stage is connected with the 3rd IGBT colelctor electrode, the 3rd IGBT emitter stage and
4th colelctor electrode connection；The hair of the 2nd IGBT colelctor electrode and the 3rd IGBT is connected in parallel on after 2 clamp diodes series connection
Between emitter-base bandgap grading；Wherein, the first clamp diode D5 negative electrode is connected with the 2nd IGBT colelctor electrode, the second clamp diode D6's
Anode is connected with the 3rd IGBT emitter stage；
DC capacitor C1, C2 of 2 series connection are parallel between the positive and negative electrode input of direct current, the midpoint of 2 DC capacitors
Midpoint connection with 2 clamp diodes of series connection is used as DC voltage midpoint.It should be noted that can also use as figure
Two groups of electric capacity C1, C3, C2, C4 in 2 replace 2 DC capacitors.
The shut-off overvoltage method of testing of each device for power switching is consistent on the left and right bridge arm of power model.In order to chat
The convenience stated, introduces IGBT switch functions, and 1 represents IGBT conductings, and 0 represents IGBT shut-offs.I.e. 1100 represent that T1, T2 are turned on, T3,
T4 is turned off, and other on off states are by that analogy.During due to individually triggering positive sequence or negative-sequence current, another half branch electric capacity can be filled
Electricity, causes lower half branch capacity unmbalance and can not obtain accurate measurement data, so we use forward-order current and negative phase-sequence
The mode of electric current poll is tested, and specific test pulse is as shown in Figure 3.The commutation course of forward-order current is as shown in figure 4, just
The commutation course of sequence electric current is as shown in Figure 5.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to the explanation present invention's
Purpose, and limitation of the invention is not used as, as long as in the essential scope of the present invention, the change to embodiment described above
Change, modification will all fall in the range of the claim of the present invention.
Claims (2)
1. a kind of shut-off method of testing of the single bridge arm in three level H-bridges inverter, it is characterised in that
Including shut-off test platform, the shut-off test platform is treated including any one in three level H-bridge power models (M1)
Survey bridge arm, pressure regulator (TR), rectifier bridge (Z1), reactor (L), current Hall (LEM), test control panel (B1) and with it is described
The connected man-machine boundary (H1) of test control panel (B1)；The input of the pressure regulator (TR) is exchanged with 380V to be connected, the pressure regulation
The output end of device (TR) is connected with the rectifier bridge (Z1)；The dc bus of the three level H-bridges power model (M1) and rectification
The direct current output of bridge (Z1) is connected；The exchange outlet of bridge arm to be measured in the three level H-bridges power model (M1) and reactor
(L) one end is connected, the other end of reactor through current Hall (LEM) and with the three level H-bridges power model (M1)
DC capacitor (C1, C2) midpoint be connected；The current Hall (LEM) is also connected with test control panel (B1)；The test
Control panel (B1) is connected by optical fiber (X1) with the three level H-bridges power model (M1)；
Test control panel is carried out by the way of forward-order current and negative-sequence current poll to the device for power switching on bridge arm to be measured
Turn off overvoltage test；The shut-off test pulse sequential of the forward-order current is：
1100、t1、0100、t2、1100、t2、0100、t2、0000、t2、0100、t2、0000；
Wherein, the digit of tetrad code represents the first IGBT to the 4th IGBT in bridge arm to be measured, 1 successively from left to right
Represent that the IGBT is turned on, 0 represents IGBT shut-offs, and t1 represents that three level H-bridge power model electric currents reach the time of rated value, t2
=0.1*t1；
The shut-off test pulse sequential of the negative-sequence current is：
0011、t1、0010、t2、0011、t2、0010、t2、0000、t2、0010、t2、0000；
Wherein, the digit of tetrad code represents the first IGBT to the 4th IGBT in bridge arm to be measured, 1 successively from left to right
Represent that the IGBT is turned on, 0 represents IGBT shut-offs, and t1 represents that three level H-bridge power model electric currents reach the time of rated value, t2
=0.1*t1.
2. the shut-off method of testing of the single bridge arm in three level H-bridges inverter according to claim 1, its feature exists
In the time interval of forward-order current and the negative-sequence current poll is 5 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474715.0A CN104297701B (en) | 2014-09-17 | 2014-09-17 | The shut-off test platform and its method of single bridge arm in three level H-bridge inverters |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474715.0A CN104297701B (en) | 2014-09-17 | 2014-09-17 | The shut-off test platform and its method of single bridge arm in three level H-bridge inverters |
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| CN104297701A CN104297701A (en) | 2015-01-21 |
| CN104297701B true CN104297701B (en) | 2017-10-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104965136A (en) * | 2015-06-18 | 2015-10-07 | 国电南瑞科技股份有限公司 | Three-level converter power unit double pulse test method |
| CN107124105B (en) * | 2017-05-05 | 2019-06-25 | 南京理工大学 | Improve the control system and method for isolated form three-level PFC converter PF |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091587A (en) * | 2013-01-24 | 2013-05-08 | 山东新风光电子科技发展有限公司 | Energy-saving inverter test circuit and control method |
| CN203522549U (en) * | 2013-08-07 | 2014-04-02 | 国家电网公司 | Distributed power grid-connected inverter testing ac source capable of island test |
| CN103852663A (en) * | 2013-08-06 | 2014-06-11 | 国家电网公司 | Energy feedback type distributed photovoltaic power inverter integrated test system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006262632A (en) * | 2005-03-17 | 2006-09-28 | Matsushita Electric Ind Co Ltd | Controller for inverter for driving motor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091587A (en) * | 2013-01-24 | 2013-05-08 | 山东新风光电子科技发展有限公司 | Energy-saving inverter test circuit and control method |
| CN103852663A (en) * | 2013-08-06 | 2014-06-11 | 国家电网公司 | Energy feedback type distributed photovoltaic power inverter integrated test system |
| CN203522549U (en) * | 2013-08-07 | 2014-04-02 | 国家电网公司 | Distributed power grid-connected inverter testing ac source capable of island test |
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Effective date of registration: 20190423 Address after: 200030 No. 640 Hongqiao Road, Xuhui District, Shanghai Patentee after: Shanghai Rectifier Factory Co., Ltd. Address before: No. 3399, Huing Road, Minhang District, Shanghai City, Shanghai Patentee before: Sieyuan Qingneng Power Electronic Co., Ltd. |
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Granted publication date: 20171003 Termination date: 20190917 |