CN2265632Y - Low-induction ac frequency-converting speed-regulator for main circuit - Google Patents
Low-induction ac frequency-converting speed-regulator for main circuit Download PDFInfo
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- CN2265632Y CN2265632Y CN 96204237 CN96204237U CN2265632Y CN 2265632 Y CN2265632 Y CN 2265632Y CN 96204237 CN96204237 CN 96204237 CN 96204237 U CN96204237 U CN 96204237U CN 2265632 Y CN2265632 Y CN 2265632Y
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Abstract
The utility model relates to a low-induction ac frequency-converting speed-regulator for a main circuit. Three-phase output contravariance bridges which are composed of six one unit Power modules are arranged on a heat radiator and are lengthways arranged at the both sides of the centerline of the heat radiator. U, V, W phase bridge arms respectively constitute a star-shaped structure. The positive electrode cylinder manifold P < 5 >, the negative electrode cylinder manifold N < 4 > and the insulation layer H < 3 >of a module side constitute a set of laminated conductor low-induction structures, and the positive electrode cylinder manifold P < 1 >, the negative electrode cylinder manifold N < 1 > and the insulation layer H < 2 >of a capacitor side constitute the other set of laminated conductor low-induction structures. A gap bridge crossover unit is connected with two trunks and is composed of HL < 1 >, BX < 1 >, FL < 1 >, P < 2 >, N < 2 > and a middle layer H < 2 >. The main circuit of the utility model forms a uniform low-induction structure body, and the parasitic inductance of the circuit is decreased furthest. The spike voltage is remarkably reduced, and the reliability of the device is enhanced.
Description
The utility model relates to a kind of low sense major loop AC frequency conversion speed regulator, belongs to electric equipment.
In inversion transformation technique, do on the transistor power device especially when turn-offing,, will on the loop, produce peak voltage because of the big current changing rate and the existence of stray inductance at the high-voltage large current on off state
This voltage is repeatedly tame on high direct voltage, totally unfavorable to the reverse safety operation area that original surplus is little, it is the one of the main reasons that power transistor damages, peak voltage carries out the suitable inhibition except that adopting buffering to absorb circuit, reducing the stray inductance of circuit as possible, then is a kind of way more initiatively.Experience shows, the frequency converter perfect functions depends on the comprehensive Design of circuit software and hardware, and the reliability of complete machine, and except that rational circuit high-quality device and strict process guaranteed, the overall construction design of major loop played a part very important.The frequency converter of domestic part manufacturer production, the power device spoilage is higher, basically relevant with the major loop structure design, improper because of layout in the circuit, it is excessive to cause stray inductance, and buffering absorption circuit or factor value apolegamy are improper in addition, element is not good, span causes peak voltage higher excessive end,, causes power device to damage under certain condition.Power device producer also is comparatively harsh to the recommended value of stray inductance, and as 1200V300AIGBT, its stray inductance value requires to be not more than 0.1MH.Length of arrangement wire only is 20 centimetres, and the cabling requirement of the spatial volume of obvious device and little stray inductance is a contradiction.Be difficult to solve this contradiction with the conventional conception wiring, for this reason, thirst for having the major loop of low sense to occur.
The purpose of this utility model is to overcome above-mentioned weak point of the prior art, and provides a kind of power device to be biserial
Shape arranges that laminated conductor adopts shortest path to connect, and peak voltage is little, the low sense major loop AC frequency conversion speed regulator that the loop stray inductance is low.
The purpose of this utility model is achieved in that it comprises base plate, laminated conductor trunk, radiator, and radiator is installed on the base plate, and its structural feature is: the triode T of the three-phase output inverter bridge of being made up of soon six one cell power moulds
1, T
3, T
5And T
4, T
6, T
2Place on the radiator, vertically be arranged in radiator center line both sides respectively; T
1, T
4Constitute U phase brachium pontis, wherein T
1Collector electrode and T
4Emitter relative, be connected to positive bus P respectively
5, negative bus-bar N
4On, constitute short distance and connect T
1Emitter and T
4Collector electrode relative, by output bus-bar Q
1Be connected, constitute one group
The shape structure; T
3, T
6Constitute V phase brachium pontis, wherein T
3Collector electrode and T
4Emitter relative, respectively with positive bus P
5With negative bus-bar N
4Be connected, constitute short distance and connect T
3Emitter and T
6Collector electrode relative, by output bus-bar O
2Be linked together, constitute another group
The shape structure; T
5, T
2Constitute W phase brachium pontis, wherein T
5Collector electrode and T
2Emitter relative, respectively with positive bus P
5With negative bus-bar N
4Link, constitute short distance and connect T
5Emitter and T
2Collector electrode C relative, by output bus-bar O
3Be linked together T
5, T
2, O
3Constitute the 3rd group
The shape structure; Module side positive bus P
5, negative bus-bar N
4With insulating barrier H
3Constitute the low sense of component layers conductor structure, capacitive side positive bus P
1Negative bus-bar N
1With insulating barrier H
2Form the low sense of another component layers conductor structure; Be connected with by Hall element HL between two trunks
1, fast acting fuse BX
1, shunt FL
1, conductive electrode P
2, N
2, intermediate layer H
2The gap bridge cross-over connection unit of forming.
The purpose of this utility model can also reach by following technical measures: the direct cross-over connection of each brachium pontis absorption circuit constitutes short path and connects between separately collector electrode and emitter.Hall element HL
1, HL
2Connect.The laminated conductor trunk is vertical with base plate to be placed, and is list structure.The laminated conductor trunk also can be placed with floor level, is platy structure.
Compared to existing technology, the utlity model has following advantage:
1, the loop stray inductance is low, and integral body step office is succinctly orderly, and each parts connects firmly;
2, peak voltage is low.Peak voltage only is volt surplus in the of 20 when 300A;
3, electric property is good, and working stability is reliable;
4, centre tabular or strip conductor accompanies insulating barrier, forms the low sense of good laminated conductor structure.
The explanation of accompanying drawing drawing:
Fig. 1 is the utility model major loop electrical schematic diagram;
Fig. 2 is the GTR power device frequency changer schematic diagram of the utility model list structure.
Fig. 3 is the IGBT power device frequency changer schematic diagram of the utility model platy structure.
Embodiment describes the utility model in detail below in conjunction with accompanying drawing:
Structure of the present utility model is divided into two kinds of forms, and a kind of is that laminated conductor trunk and base plate are arranged vertically, and is list structure, and Fig. 2 is the vertical view embodiment of this structure.Be applicable to GTR power device frequency converter.Radiator as shown in Figure 2 (1) is installed on the base plate (2).Concrete structure: the three-phase that module side is made up of six one cell power modules is exported the transistor T of inverter bridge
1, T
2, T
3And T
4, T
6, T
2Place on the radiator (2), be distributed in radiator (2) center line both sides and do vertical arrangement.Transistor T wherein
1-T
6Be the GTR power model.T
1, T
4Constitute U phase brachium pontis.Power model T
1Collector electrode C and T
4Emitter E relative, be connected to positive bus P respectively
5With negative bus-bar N
4On, constitute short distance and connect T
1Emitter and T
4Collector electrode C relative, and by output bus-bar Q
1Be connected, make transistor T
1T
4With output bus-bar O
1Form one together
The shape structure.T
3, T
6Constitute V phase brachium pontis, wherein T
3Collector electrode C and T
6Emitter E relative, be connected on positive bus P respectively
5With negative bus-bar N
4On, form short distance and connect.T
3Emitter E and T
6Collector electrode C relative, and by output bus-bar O
2Link, make T
3T
6With O
2Form another
The shape structure.Transistor T
5, T
2Constitute W phase brachium pontis, wherein T
5Collector electrode C and T
2Emitter E relative, be connected on positive bus P respectively
5With negative bus-bar N
4On, form short distance and connect.T
5Emitter E and T
2Collector electrode C connect, and by output bus-bar O
3Connect, make T
5, T
2With O
3Form the 3rd
The shape structure.Directly be connected across between separately the collector electrode and emitter as each brachium pontis absorption circuit of Fig. 1, constitute short path and connect, the absorption circuit of V phase arm is by absorbing capacitor C
S1, fast recovery diode V
DS1, absorption resistance R
S1Form, absorb capacitor C
S1With recovery diode V
DS1, absorption resistance R
S1Be connected across triode T after being connected
1Collector electrode C, T
2Emitter E between.The absorption circuit of V phase arm is by absorbing capacitor C
S2, fast recovery diode V
DS2, absorption resistance R
S2Form C
S2, V
DS2, R
S2Be connected across triode T after being connected
3, T
6Collector electrode C, emitter E between.Absorb capacitor C
S3With fast recovery diode V
DS3, resistance R
S3Be connected across transistor T after being connected
5Collector electrode C, T
2Emitter E between constitute three absorption circuits of the mat woven of fine bamboo strips.Shunt FL
1Be connected on the loop and be connected, be used for the load ground protection with ground wire.Fast acting fuse BX
1With Hall element HL
1Be connected on the loop after the serial connection mutually.HL
1Effect be to be used for current detecting, the overcurrent short-circuit protection.Also be connected with power filtering capacitor V in the loop
CCAs Fig. 2, Fig. 3 two row module center lines top promptly is by positive bus P
5, negative bus-bar N
4With insulating barrier H
3The common laminated conductor of forming hangs down feels the trunk that confluxes, and constitutes the low sense of component layers conductor structure.Capacitive side positive bus P
1, negative bus-bar N
1With insulating barrier H
2Form the low sense of another component layers conductor structure.That shown in Figure 2 is the vertical view embodiment of GTR power device frequency converter, and its laminated conductor trunk and base plate (L) are perpendicular, are list structure.
High-voltage capacitance side: by positive bus P
1, negative bus-bar N
4, neutral plate M
1With insulating barrier H
1Form another component layers conductor trunk, be installed on the top of capacitor, form the capacitive side trunk that confluxes.
Conflux trunk and capacitive side of the low sense of laminated conductor confluxed between the trunk, by Hall element HL
1, fast acting fuse BX
1, shunt FL
1(IGBT power device frequency converter uses Hall element HL
2) and conductive electrode P
2, N
2Wait their centre to accompany insulating barrier H
2, form gap bridge cross-over connection unit together.Among Fig. 3, Hall element HL
1, HL
2Adopt and divide the current conductor mode, purpose is capacitance grade and the physical dimension that reduces Hall element, for the low sensing mode of laminated conductor creates conditions.Fig. 3 is suitable for IGBT power device frequency converter, and its laminated conductor trunk and base plate (2) horizontal arrangement are platy structure.GTR, IGBT power device frequency converter all can be used among Fig. 2 or Fig. 3.
Operation principle of the present utility model: by V
CCThe high direct voltage electric current that provides is added in P, N two ends, as power device T
1, T
3, T
5, T
4, T
6, T
2Press SPWM three-phase sequential turn-on or by the time, UVW will export three-phase alternating voltage.On each brachium pontis big current changing rate will be arranged.Because of the utility model has adopted the various measures on the aforementioned structure, make stray inductance very little, eliminated peak voltage basically, make
To be very little.
Claims (5)
1, a kind of low sense major loop AC frequency conversion speed regulator comprises base plate, laminated conductor trunk, radiator, and radiator is installed on the base plate, it is characterized in that:
The triode T of a, the three-phase output inverter bridge formed soon by six one cell power moulds
1, T
3, T
5And T
4, T
6, T
2Place on the radiator, vertically be arranged in radiator center line both sides respectively;
B, T
1, T
4Constitute U phase brachium pontis, wherein T
1Collector electrode and T
4Emitter relative, be connected to positive bus P respectively
5, negative bus-bar N
4On, constitute short distance and connect T
1Emitter and T
4Collector electrode relative, by output bus-bar Q
1Be connected, constitute one group
The shape structure;
C, T
3, T
6Constitute V phase brachium pontis, wherein T
3Collector electrode and T
4Emitter relative, respectively with positive bus P
5With negative bus-bar N
4Be connected, constitute short distance and connect T
3Emitter and T
6Collector electrode relative, by output bus-bar O
2Be linked together, constitute another group
The shape structure;
D, T
5, T
2Constitute W phase brachium pontis, wherein T
5Collector electrode and T
2Emitter relative, respectively with positive bus P
5With negative bus-bar N
4Link, constitute short distance and connect T
5Emitter and T
2Collector electrode C relative, by output bus-bar O
3Be linked together T
5, T
2With O
3Constitute the 3rd group
The shape structure;
E, module side remittance utmost point bus-bar P
5, negative bus-bar N
4With insulating barrier H
3Constitute the low sense of component layers conductor structure, capacitive side positive bus P
1Negative bus-bar N
1With insulating barrier H
2Form the low sense of another component layers conductor structure;
Be connected with by Hall element HL between f, two trunks
1, fast acting fuse BX
1, shunt FL
1, conductive electrode P
2, N
2, intermediate layer H
2The gap bridge cross-over connection unit of forming.
2, low sense major loop AC frequency conversion speed regulator according to claim 1, its feature, constitute short path and connect between separately collector electrode and emitter in the direct cross-over connection of each brachium pontis absorption circuit.
3, low sense major loop AC frequency conversion speed regulator according to claim 1, its feature is in Hall element HL
1, HL
2Connect.
4, low sense major loop AC frequency conversion speed regulator according to claim 1, its feature is placed in the laminated conductor trunk is vertical with base plate, is list structure.
5, low sense major loop AC frequency conversion speed regulator according to claim 1, its feature also can be placed with floor level in the laminated conductor trunk, is platy structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96204237 CN2265632Y (en) | 1996-02-01 | 1996-02-01 | Low-induction ac frequency-converting speed-regulator for main circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96204237 CN2265632Y (en) | 1996-02-01 | 1996-02-01 | Low-induction ac frequency-converting speed-regulator for main circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2265632Y true CN2265632Y (en) | 1997-10-22 |
Family
ID=33889577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96204237 Expired - Fee Related CN2265632Y (en) | 1996-02-01 | 1996-02-01 | Low-induction ac frequency-converting speed-regulator for main circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2265632Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101006633B (en) * | 2005-01-28 | 2010-09-01 | 三菱电机株式会社 | Rotating electric machine |
| CN102495294A (en) * | 2011-11-30 | 2012-06-13 | 台达电子企业管理（上海）有限公司 | System and method for testing parasitic inductance |
-
1996
- 1996-02-01 CN CN 96204237 patent/CN2265632Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101006633B (en) * | 2005-01-28 | 2010-09-01 | 三菱电机株式会社 | Rotating electric machine |
| CN102495294A (en) * | 2011-11-30 | 2012-06-13 | 台达电子企业管理（上海）有限公司 | System and method for testing parasitic inductance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |