CN209016942U - A kind of drive electric power unit - Google Patents
A kind of drive electric power unit Download PDFInfo
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- CN209016942U CN209016942U CN201822058548.8U CN201822058548U CN209016942U CN 209016942 U CN209016942 U CN 209016942U CN 201822058548 U CN201822058548 U CN 201822058548U CN 209016942 U CN209016942 U CN 209016942U
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- bridge
- pulse transformer
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- electric power
- drive electric
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Abstract
The utility model provides a kind of drive electric power unit.The device includes half-bridge circuit and n pulse transformer, n >=2；Half-bridge circuit includes the half-bridge topology being made of device for power switching, and the half-bridge drive circuit for driving half-bridge topology；N pulse transformer is mutually isolated；Each pulse transformer is made of primary and secondary side；The primary side of each pulse transformer is connected with output end OUT1, OUT2 of half-bridge circuit, and the primary side of n pulse transformer is connected in parallel.The device circuit structure is simple, using less chip and device, reduces the cost of hardware, realizes the reliable isolation of multiple power supplys, provides power supply guarantee for the driving circuit of power device.
Description
Technical field
The utility model electronic technology field more particularly to a kind of drive electric power unit.
Background technique
The three-phase inversion of motor driver exports, and generally uses IGBT, NOSFET constant power device, these power devices need
It to be controlled using driving circuit or driving chip, these circuits and chip are needed using independent power supply, these power supplys
Between be isolated, and these power supplys also need to be isolated with the power supply of internal circuit.General each power device
The driving circuit of use is needed using an independent isolated power supply, but this mode increases the quantity and power supply core of power supply
The quantity of piece increases cost, and circuit is made to become complicated.
Utility model content
Status in view of the above technology, the utility model provide a kind of drive electric power unit, using half-bridge drive circuit and more
A pulse transformer, it is in parallel by carrying out the primary side of multiple pulse transformers, realize that the isolation to multiple power supplys exports.
The technical solution of the utility model are as follows: a kind of drive electric power unit, it is characterized in that: including half-bridge circuit and n arteries and veins
Rush transformer, n >=2；
The half-bridge circuit includes half-bridge topology, and for driving the half-bridge drive circuit of half-bridge topology (or is half
Bridge driving chip), the half-bridge topology includes device for power switching；The output end of the half-bridge circuit is OUT1, OUT2；
The n pulse transformer is mutually isolated；Each pulse transformer is made of primary and secondary side；Each pulse becomes
The primary side of depressor is connected with output end OUT1, OUT2 of half-bridge circuit, and the primary side of n pulse transformer is connected in parallel；Often
The secondary side of a pulse transformer can be used as independent current source and provide power supply for the driving circuit of power device.
The device for power switching includes but is not limited to MOSFET, transistor, IGBT etc..
As a kind of implementation, the structure of the half-bridge topology is as shown in Figure 1, include device for power switching D1, D2
In parallel with D1, D2 after capacitor C1, C2 series connection with capacitor C1, C2, tie point A1 exports OUT1 and A1 phase between D1 and D2
Even, between C1 and C2, output OUT2's tie point A2 is connected with A2.At this moment, in the half-bridge topology, device for power switching
D1, D2 can be located in half-bridge driven chip.
Compared with prior art, the utility model uses one group of half-bridge circuit and multiple pulse transformers being mutually isolated,
Each pulse transformer includes primary and secondary side, and primary side is connected with the output of half-bridge circuit respectively, and by multiple pulse transformings
The primary side of device is connected in parallel, and realizes the isolation output of multiple power supplys.The device circuit structure is simple, using less chip and
Device reduces the cost of hardware, realizes the reliable isolation of multiple power supplys, provides power supply for the driving circuit of power device
It ensures.
Detailed description of the invention
Fig. 1 is the electrical block diagram of drive electric power unit in the utility model embodiment 1.
Fig. 2 is the electrical block diagram of drive electric power unit in the utility model embodiment 2.
Fig. 3 is the electrical block diagram of drive electric power unit in the utility model embodiment 3.
Specific embodiment
The utility model is described in further detail below with reference to embodiment and attached drawing, it should be pointed out that following institute
It states embodiment to be intended to convenient for the understanding to the utility model, and does not play any restriction effect to it.
Embodiment 1:
As shown in Figure 1, the circuit structure of drive electric power unit, is made of half-bridge circuit and 4 pulse transformers.
The half-bridge topology that half-bridge circuit is made of device for power switching, and the half-bridge driven electricity for driving half-bridge topology
Road U1 composition.Half-bridge topology is made of device for power switching D1, D2 and capacitor C1, C2, in parallel with D1, D2 after C1, C2 series connection.Function
Rate switching device can be MOSFET, transistor, IGBT etc..The output end of half-bridge circuit is OUT1, OUT2.Tie point A1 is located at
Between D1 and D2, output OUT1 is connected with A1, and between C1 and C2, output OUT2's tie point A2 is connected with A2.
L1, L2, L3, L4 are pulse transformer, are isolation mutually.L1, L2, L3, L4 respectively include primary and secondary side.
The primary side of L1, L2, L3, L4 are connected with OUT1, OUT2 respectively, and are to be connected in parallel between the primary side of L1, L2, L3, L4.L1,
The secondary side output of L2, L3, L4 can be used as independent current source respectively and provides power supply for the driving circuit of power device.For example, L1,
L2, L3 are the drive circuitry of three upper bridge arms of inverter, and L4, which is that the driving circuit of three lower bridge arms is unified, to power.
Embodiment 2:
As shown in Fig. 2, the circuit structure of drive electric power unit, is made of half-bridge circuit and n pulse transformer.
The half-bridge topology that half-bridge circuit is made of device for power switching, and the half-bridge driven electricity for driving half-bridge topology
Road U1 composition.Half-bridge topology is made of device for power switching D1, D2 and capacitor C1, C2, in parallel with D1, D2 after C1, C2 series connection.Function
Rate switching device can be MOSFET, transistor, IGBT etc..The output end of half-bridge circuit is OUT1, OUT2.Tie point A1 is located at
Between D1 and D2, output OUT1 is connected with A1, and between C1 and C2, output OUT2's tie point A2 is connected with A2.
L1, L2, L3 ..., Ln be n pulse transformer, n >=1, mutually be isolated.L1,L2,L3,……,Ln
Respectively include primary and secondary side.L1, L2, L3 ..., the primary side of Ln be connected respectively with OUT1, OUT2, and L1, L2,
L3 ..., between the primary side of Ln to be connected in parallel.L1, L2, L3 ..., the output of the secondary side of Ln can be used as independent current source respectively,
Power supply can be provided for the driving circuit of power device.
Embodiment 3:
In the present embodiment, the circuit structure of drive electric power unit is as shown in Figure 3.The circuit structure of the drive electric power unit with
Embodiment 2 is essentially identical, except that: D1, D2 in half-bridge topology are included in half-bridge drive circuit U1.
The technical solution of the utility model is described in detail in embodiment described above, it should be understood that the above institute
Only specific embodiment of the utility model is stated, is not intended to limit the utility model, all spirits in the utility model
Interior done any modification, supplement or similar fashion substitution etc., should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of drive electric power unit, it is characterized in that: including half-bridge circuit and n pulse transformer, n >=2；
The half-bridge circuit includes half-bridge topology, and the half-bridge drive circuit for driving half-bridge topology, the half-bridge topology
Including device for power switching；The output end of the half-bridge circuit is OUT1, OUT2；
The n pulse transformer is mutually isolated；Each pulse transformer is made of primary and secondary side；Each pulse transformer
Primary side be connected with output end OUT1, OUT2 of half-bridge circuit, and the primary side of n pulse transformer is connected in parallel.
2. drive electric power unit as described in claim 1, it is characterized in that: the device for power switching includes MOSFET, crystal
Pipe, IGBT.
3. drive electric power unit as claimed in claim 1 or 2, it is characterized in that: the half-bridge topology includes device for power switching
D1, D2 and capacitor C1, C2, it is in parallel with D1, D2 after capacitor C1, C2 series connection；Tie point A1 between D1 and D2, output OUT1 with
A1 is connected, and between C1 and C2, output OUT2's tie point A2 is connected with A2.
4. drive electric power unit as claimed in claim 3, it is characterized in that: in the half-bridge topology, device for power switching D1, D2
In half-bridge drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058548.8U CN209016942U (en) | 2018-12-08 | 2018-12-08 | A kind of drive electric power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058548.8U CN209016942U (en) | 2018-12-08 | 2018-12-08 | A kind of drive electric power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209016942U true CN209016942U (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822058548.8U Active CN209016942U (en) | 2018-12-08 | 2018-12-08 | A kind of drive electric power unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378990A (en) * | 2018-12-08 | 2019-02-22 | 中国科学院宁波材料技术与工程研究所 | A kind of drive electric power unit |
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2018
- 2018-12-08 CN CN201822058548.8U patent/CN209016942U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378990A (en) * | 2018-12-08 | 2019-02-22 | 中国科学院宁波材料技术与工程研究所 | A kind of drive electric power unit |
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