CN207926433U - A kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting - Google Patents
A kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting Download PDFInfo
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- CN207926433U CN207926433U CN201721649312.0U CN201721649312U CN207926433U CN 207926433 U CN207926433 U CN 207926433U CN 201721649312 U CN201721649312 U CN 201721649312U CN 207926433 U CN207926433 U CN 207926433U
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- bridge inverter
- phase half
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Abstract
A kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting, alternating current generator sends out three-phase four-wire system 115V/ (360 720) Hz alternating currents, number is A lines, B lines, C lines and ground wire, the input terminal of self coupling vertoro is connected into A lines, B lines and C lines, the output end of self coupling vertoro, that is, ﹢ 135V lines are connected with 135V lines with non-isolated three-phase half-bridge inverter input side, inside non-isolated three-phase half-bridge inverter, ﹢ 135V lines connect common mode inductance with 135V lines, the output end of common mode inductance connects non-isolated three-phase half-bridge inverter subsequent conditioning circuit.The circuit can effectively inhibit in the wide conversion power supply system of exchange, and the voltage that non-isolated three-phase half-bridge inverter input side common mode interference is brought is lifted problem so that the wide conversion power supply system of exchange is able to normal table operation.
Description
Technical field
The utility model belongs to powered stable technical field in aviation power supply system, becomes using more universal exchange width
In frequency power supply system, and in particular to a kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting.
Background technology
More electricity electric aircrafts gradually become the development trend of future aircraft, interior of aircraft feeder ear and load end by ±
135V lines transmit energy, can reduce the loss on circuit to the greatest extent.Simultaneously for the requirement of aircraft entirety loss of weight, self coupling becomes
Press rectifier using unbalanced topology, three-phase half-bridge inverter uses non-isolated topology.
In this case, by alternating current generator, unbalanced self coupling vertoro and non-isolated three-phase half-bridge inverter group
After system, system is non-isolated system.Two ground wires of alternating current generator and non-isolated three-phase half-bridge inverter have potential difference,
After two ground wires are linked together, which in the form of common mode interference, introduces the output of alternating current generator by ground wire
End.The common mode interference carries out rectification by self coupling vertoro, is added on self coupling vertoro normal output voltage, leads
The lifting for causing output voltage, brings system protection.Common mode inductance is sealed in non-isolated three-phase half-bridge inverter input terminal, passes through conjunction
Reason design the common mode inductance can completely inhibit the common mode interference, by the output voltage stabilization of self coupling vertoro to ±
135V。
Utility model content
The utility model aim：
It provides one kind and inhibiting non-isolated three-phase half-bridge inverter input side common mode electricity in the wide conversion power supply system of exchange
Press the circuit of lifting.
Technical solutions of the utility model are a kind of non-isolated three-phase half-bridge inverter input side common-mode voltage liftings of inhibition
Circuit, alternating current generator send out three-phase four-wire system 115V/ (360-720) Hz alternating currents, and number is A lines, B lines, C lines and ground wire,
By the input terminal of self coupling vertoro connection A lines, B lines and C lines, output end, that is, ﹢ 135V lines of self coupling vertoro and-
135V lines are connected with non-isolated three-phase half-bridge inverter input side, inside non-isolated three-phase half-bridge inverter, ﹢ 135V lines and-
135V lines connect common mode inductance, and the output end of common mode inductance connects non-isolated three-phase half-bridge inverter subsequent conditioning circuit.
A kind of circuit of the non-isolated three-phase half-bridge inverter input side common-mode voltage lifting of inhibition, alternating current generator
It is constant pressure frequency conversion alternating current to send out, frequency range 360-720Hz, and self coupling vertoro uses unbalanced knot
Structure.
The circuit of the non-isolated three-phase half-bridge inverter input side common-mode voltage lifting of a kind of inhibition, non-isolated three
Common-mode voltage added by phase half-bridge inverter input side should have higher saturation magnetic induction, therefore the magnetic core of common mode inductance selects silicon
Steel disc magnetic core.
Advantageous effect
The circuit can effectively inhibit in the wide conversion power supply system of exchange, non-isolated three-phase half-bridge inverter input side common mode
The voltage that interference fringe comes is lifted problem so that the wide conversion power supply system of exchange is able to normal table operation.
Description of the drawings
Fig. 1 is the structural principle block diagram of the utility model.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
Alternating current generator sends out three-phase four-wire system 115V/ (360-720) Hz alternating currents by the driven by engine on aircraft, and three
Phase four-wire system number is respectively A lines, B lines, C lines and ground wire, and the input terminal of self coupling vertoro is connected A lines, B lines and C lines,
Then three-phase four-wire system 115V/ (360-720) Hz alternating currents are sent into self coupling vertoro.Self coupling vertoro is by three-phase and four-line
115V/ (360-720) Hz AC rectifications processed are ± 135V direct currents.The output end of self coupling vertoro, that is, ﹢ 135V and-
135V is connected with non-isolated three-phase half-bridge inverter input side, then ± 135V direct currents are sent into non-isolated three-phase half-bridge inverter.
Three-phase half-bridge inverter general ± 135V direct currents are changed into three-phase four-wire system 115V/400Hz constant voltage constant frequency alternating currents.Non-isolated
Inside three-phase half-bridge inverter, ﹢ 135V connect common mode inductance with -135V input lines, and the output end connection of common mode inductance is non-isolated
Three-phase half-bridge inverter subsequent conditioning circuit.
It is constant pressure frequency conversion alternating current, frequency range 360-720Hz, self coupling Transformer Rectifier that alternating current generator, which is sent out,
Device is unbalanced structure, i.e., there are one main bridges and two auxiliary bridges, most energy to be passed by main bridge for self coupling vertoro
It is defeated.Non-isolated three-phase half-bridge inverter is single stage type topology, and is non-isolated topology without isolating transformer.
Common-mode voltage added by non-isolated three-phase half-bridge inverter input side has higher saturation magnetic induction, therefore common mode
The magnetic core of inductance selects silicon steel sheet magnetic core.
Within the system, the ground wire of non-isolated three-phase half-bridge inverter and the ground wire of alternating current generator are not equipotentials, are led to
It crosses ground wire and common mode interference is introduced to alternator output terminals, cause the output voltage of self coupling vertoro to be lifted, bring and be
Blanket insurance is protected.Common mode inductance is sealed in non-isolated three-phase half-bridge inverter input terminal, it can be complete by rationally designing the common mode inductance
Inhibit the common mode interference entirely, by the output voltage stabilization of self coupling vertoro to ± 135V.
Claims (3)
1. a kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting, it is characterised in that：Exchange hair
Motor sends out three-phase four-wire system 115V/ (360-720) Hz alternating currents, and number is A lines, B lines, C lines and ground wire, and self coupling is become repoussage
Flow input terminal connection A lines, B lines and the C lines of device, the output end, that is, ﹢ 135V lines and -135V lines of self coupling vertoro and non-isolated
Three-phase half-bridge inverter input side connects, and inside non-isolated three-phase half-bridge inverter, ﹢ 135V lines connect common mode with -135V lines
The output end of inductance, common mode inductance connects non-isolated three-phase half-bridge inverter subsequent conditioning circuit.
2. a kind of electricity inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting according to claim 1
Road, which is characterized in that it is constant pressure frequency conversion alternating current, frequency range 360-720Hz, self coupling change that alternating current generator, which is sent out,
Rectifier is pressed to use unbalanced structure.
3. a kind of electricity inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting according to claim 1
Road, which is characterized in that the magnetic core of common mode inductance selects silicon steel sheet magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649312.0U CN207926433U (en) | 2017-11-30 | 2017-11-30 | A kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721649312.0U CN207926433U (en) | 2017-11-30 | 2017-11-30 | A kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926433U true CN207926433U (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721649312.0U Active CN207926433U (en) | 2017-11-30 | 2017-11-30 | A kind of circuit inhibiting non-isolated three-phase half-bridge inverter input side common-mode voltage lifting |
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| CN (1) | CN207926433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113380492A (en) * | 2021-06-11 | 2021-09-10 | 西安电子科技大学 | AC-DC coupling type common mode inductor for DC inversion power supply system |
-
2017
- 2017-11-30 CN CN201721649312.0U patent/CN207926433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113380492A (en) * | 2021-06-11 | 2021-09-10 | 西安电子科技大学 | AC-DC coupling type common mode inductor for DC inversion power supply system |
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