CN109039132A - A kind of close power amplifier circuit of seven bridge arms, the five phase output with failure tolerance - Google Patents
A kind of close power amplifier circuit of seven bridge arms, the five phase output with failure tolerance Download PDFInfo
- Publication number
- CN109039132A CN109039132A CN201810811228.7A CN201810811228A CN109039132A CN 109039132 A CN109039132 A CN 109039132A CN 201810811228 A CN201810811228 A CN 201810811228A CN 109039132 A CN109039132 A CN 109039132A
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- CN
- China
- Prior art keywords
- bridge arm
- circuit
- power amplifier
- close power
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
Abstract
The close power amplifier circuit for seven bridge arms, the five phase output with failure tolerance that present invention discloses a kind of, the circuit include six-bridge arm five-path output close power amplifier main power circuit, the 7th spare bridge arm and adjunct circuit.Six-bridge arm five-path output close power amplifier main power circuit constitutes six half-bridge circuits by 12 switching tubes and 12 diodes and forms, wherein A, B, C, D, E are that five tunnels load bridge arm, five phase load La, Lb, Lc, Ld, Le are resistance inductive load, it is connected by middle line with public bridge arm N, realizes the independent output of five road electric currents.7th spare bridge arm is by two switching tube Sf1、Sf2With two diode Df1、Df2It constitutes.On five tunnels on the basis of six bridge arm close power amplifier circuit of output, increase a bridge arm, constitute redundancy structure, according to the result of failure predication, when the public bridge arm of close power amplifier breaks down, start the bridge arm that redundancy bridge arm replaces original failure, close power amplifier bridge arm structure is reconstructed, the final faults-tolerant control for realizing close power amplifier.
Description
Technical field
The close power amplifier circuit for seven bridge arms, the five phase output with failure tolerance that the present invention relates to a kind of, can be used for magnetic bearing
Technical field.
Background technique
Magnetic suspension bearing usually can operate with the occasions such as aerospace, defense military, running environment due to its own feature
It is special, as close power amplifier vital in closed-loop control system, if in local failure, it will so that bearing rotor
It will lead to whole system paralysis by huge impact, when serious, bring about great losses or even serious safety accident, therefore
Magnetic suspension bearing close power amplifier system must have fault-tolerance.
In multivariant magnetic suspension bearing close power amplifier control system, since required switching tube is more, in order to reduce
Cost simplifies structure, and a kind of close power amplifier circuit of more bridge arm topological structures is applied in magnetic suspension bearing control system.It is more
Bridge arm close power amplifier main power circuit realizes that the independent of each road electric current exports by increasing a public bridge arm.More bridge arm magnetic suspension
In bearing close power amplifier system, the driving circuit failure of any freedom degree can lead to suspension difficulty, itself drives unlike motor
It is fault-tolerant that dynamic failure can take Strategy of Direct Torque Control to realize, magnetic suspension bearing close power amplifier itself does not have fault-tolerant ability, and
Switch bridge arm failure is inevitable again.The power topology of more bridge arm close power amplifiers flow every phase load electric current will
Through public bridge arm, thus public bridge arm relative load bridge arm bears higher current stress, it is easier to break down.
Summary of the invention
The object of the invention is to propose a kind of with failure tolerance to solve the above-mentioned problems in the prior art
Seven bridge arms, five phase output close power amplifier circuit.
The purpose of the invention will be achieved through the following technical solutions:, and a kind of seven bridge arms five with failure tolerance are mutually defeated
Close power amplifier circuit out, including six-bridge arm five-path output close power amplifier main power circuit, the 7th spare bridge arm and adjunct circuit,
Six-bridge arm five-path output close power amplifier main power circuit, the 7th spare bridge arm and adjunct circuit are electrically connected between each other.
Preferably, the six-bridge arm five-path output close power amplifier main power circuit is by 12 switching tube Sn1、Sn2、Sa1、Sa2、
Sb1、Sb2、Sc1、Sc2、Sd1、Sd2、Se1、Se2And 12 diode Dn1、Dn2、Da1、Da2、Db1、Db2、Dc1、Dc2、Dd1、Dd2、De1、
De2Six half-bridge circuit compositions are constituted, wherein A, B, C, D, E are that five tunnels load bridge arm, and five phase load La, Lb, Lc, Ld, Le are resistance
Inductive load is connected by middle line with public bridge arm N, realizes the independent output of five road electric currents.
Preferably, the 7th spare bridge arm is by two switching tube Sf1、Sf2With two diode Df1、Df2Constitute emergency bridge
Arm.
Preferably, the adjunct circuit is made of switch transistor T 1, T2, T3, T4, the first fusible link, the second fusible link,
NODE1, NODE2 are two fault detecting points, and the conducting complementary with switch transistor T 3 of switch transistor T 2, Ud is busbar voltage source, and first is molten
Fracture of wire is connected with busbar voltage source Ud, and the second fusible link concatenates and then be connected to the first fusible link both ends with T1.
Preferably, the switch transistor T 4 is connected to NODE1 test point and Sn1Between, switch transistor T 3 is serially connected in public bridge arm
Between point and load neutral, switch transistor T 2 is serially connected between the 7th spare bridge arm midpoint and load neutral.
Preferably, which further includes circuit detection module, reconstructed module and control signal switching module, the circuit inspection
It surveys module, reconstructed module and control signal switching module to be electrically connected with main power circuit, the circuit detection module is used for
The state of the public bridge arm main power circuit of real-time detection transfers information to topology reconstruction and control when fault-signal occurs in monitoring
Signal switching module processed；Isolation circuit in reconstructed module is controlled for rapidly cutting off fault power pipe from public bridge arm
Signal switching module is used to the control signal of fault power pipe passing to close power amplifier controller, by controller by switching signal
Redundant power pipe is switched to by failure pipe.
The advantages of technical solution of the present invention is mainly reflected in: a kind of suspension of five-freedom degree magnetic bearing of the invention has
The close power amplifier circuit of seven bridge arms, the five phase output of failure tolerance, the basis of six bridge arm close power amplifier circuits of output on five tunnels
On, increase by the 7th bridge arm, constitutes redundancy structure, according to failure predication as a result, when the public bridge arm of close power amplifier breaks down,
Starting redundancy bridge arm is reconstructed close power amplifier bridge arm structure instead of the bridge arm of original failure, final to realize that the output of five phases is opened
Close the faults-tolerant control of power amplifier.
Detailed description of the invention
Fig. 1 is that seven bridge arms, five phase of the invention exports close power amplifier circuit.
Fig. 2 is public bridge arm faulty circuit working principle diagram of the invention.
Fig. 3 is public bridge arm faulty circuit working principle diagram of the invention.
Fig. 4 is public bridge arm faulty circuit working principle diagram of the invention.
Fig. 5 is public bridge arm faulty circuit working principle diagram of the invention.
Specific embodiment
The purpose of the present invention, advantage and feature, by by the non-limitative illustration of preferred embodiment below carry out diagram and
It explains.These embodiments are only the prominent examples using technical solution of the present invention, it is all take equivalent replacement or equivalent transformation and
The technical solution of formation, all falls within the scope of protection of present invention.
The close power amplifier circuit for seven bridge arms, the five phase output with failure tolerance that present invention discloses a kind of, as shown in Figure 1,
The close power amplifier circuit includes that six-bridge arm five-path exports close power amplifier main power circuit 1, the 7th spare bridge arm 2 and adjunct circuit 3,
Six-bridge arm five-path exports close power amplifier main power circuit 1, the 7th spare bridge arm 2 and adjunct circuit 3 and is electrically connected between each other.
The six-bridge arm five-path output close power amplifier main power circuit 1 is by 12 switching tube Sn1、Sn2、Sa1、Sa2、Sb1、Sb2、
Sc1、Sc2、Sd1、Sd2、Se1、Se2And 12 diode Dn1、Dn2、Da1、Da2、Db1、Db2、Dc1、Dc2、Dd1、Dd2、De1、De2Constitute six
A half-bridge circuit composition, wherein A, B, C, D, E are that five tunnels load bridge arm, and five phase load La, Lb, Lc, Ld, Le are negative for resistance sense
It carries, is connected by middle line with public bridge arm N, realize the independent output of five road electric currents.
The 7th spare bridge arm 2 is by two switching tube Sf1、Sf2With two diode Df1、Df2Constitute spare bridge arm.It is described
Adjunct circuit 3 is made of switch transistor T 1, T2, T3, T4, the first fusible link 10, the second fusible link 20, and NODE1, NODE2 are two
Fault detecting point, the conducting complementary with switch transistor T 3 of switch transistor T 2, Ud are busbar voltage source, the first fusible link 10 and busbar voltage source
Ud is connected, and the second fusible link 20 concatenates and then be connected to 10 both ends of the first fusible link with T1.The switch transistor T 4 is connected to
NODE1 test point and Sn1Between, switch transistor T 3 is serially connected between public bridge arm midpoint and load neutral, and switch transistor T 2 is serially connected in standby
With between bridge arm midpoint and load neutral.
The circuit further include circuit detection module, reconstructed module and control signal switching module, the circuit detection module,
Reconstructed module and control signal switching module are electrically connected with main power circuit, and the circuit detection module is used for real-time detection
The state of public bridge arm main power circuit transfers information to topology reconstruction and cuts with control signal when fault-signal occurs in monitoring
Change the mold block；Isolation circuit in reconstructed module from public bridge arm for rapidly cutting off fault power pipe, control signal switching
Module is used to the control signal of fault power pipe passing to close power amplifier controller, by controller by switching signal by failure pipe
Redundant power pipe is switched to, so that redundancy pipe works instead of failure pipe, guarantees that circuit meets and operates normally.
Basic functional principle is:
By taking public bridge arm as an example, the following are four kinds of working conditions after the failure of public bridge arm:
A, upper tube short circuit (UNODE1=Ud, UNODE2=Ud) under the conditions of as shown in Fig. 2, at this time switch transistor T 2 be connected, switch transistor T 1, T3,
T4 shutdown.
B, lower tube short circuit (UNODE1=Ud, UNODE2=0) as shown in figure 3, switch transistor T 2 is connected at this time under the conditions of, T1, switching tube
T3, T4 shutdown.
C, two-tube short circuit (UNODE1= Ud, UNODE2=0) as shown in figure 4, switch transistor T 1, T2 are connected at this time under the conditions of, switching tube
T3, T4 shutdown.
D, public bridge arm upper tube/down tube/two-tube open circuit (UNODE1=Ud, 0 < UNODE2<Ud) under the conditions of as shown in figure 5, opening at this time
Close pipe T1, T2 conducting, switch transistor T 3, T4 shutdown.
The circuit increases a bridge arm on the basis of the six bridge arm close power amplifier circuit that five tunnels export, and constitutes redundancy knot
Structure starts redundancy bridge arm, instead of original failure according to failure predication as a result, when the public bridge arm of close power amplifier breaks down
Bridge arm, close power amplifier bridge arm structure is reconstructed, the final faults-tolerant control for realizing close power amplifier.
The present invention is not limited solely to that public bridge arm is fault-tolerant, the fault tolerable circuit of remaining load bridge arm can and so on obtain,
The output of not only five phases, all kinds of more bridge arm close power amplifiers are all that can apply this technical solution.
Still there are many embodiment, all technical sides formed using equivalents or equivalent transformation by the present invention
Case is within the scope of the present invention.
Claims (6)
1. a kind of close power amplifier circuit of seven bridge arms, the five phase output with failure tolerance, it is characterised in that: including six bridge arms five
Road exports close power amplifier main power circuit (1), the 7th spare bridge arm (2) and adjunct circuit (3), six-bridge arm five-path output switch function
Main power circuit (1), the 7th spare bridge arm (2) and adjunct circuit (3) is put to be electrically connected between each other.
2. a kind of close power amplifier circuit of seven bridge arms, five phase output with failure tolerance according to claim 1, special
Sign is: six-bridge arm five-path output close power amplifier main power circuit (1) is by 12 switching tube Sn1、Sn2、Sa1、Sa2、Sb1、
Sb2、Sc1、Sc2、Sd1、Sd2、Se1、Se2And 12 diode Dn1、Dn2、Da1、Da2、Db1、Db2、Dc1、Dc2、Dd1、Dd2、De1、De2Structure
It is formed at six half-bridge circuits, wherein A, B, C, D, E are that five tunnels load bridge arm, and five phase load La, Lb, Lc, Ld, Le are resistance sense
Load, is connected by middle line with public bridge arm N, realizes the independent output of five road electric currents.
3. a kind of close power amplifier circuit of seven bridge arms, five phase output with failure tolerance according to claim 1, special
Sign is: the 7th spare bridge arm (2) is by two switching tube Sf1、Sf2With two diode Df1、Df2Constitute spare bridge arm.
4. a kind of close power amplifier circuit of seven bridge arms, five phase output with failure tolerance according to claim 1, special
Sign is: the adjunct circuit (3) is made of switch transistor T 1, T2, T3, T4, the first fusible link (10), the second fusible link (20),
NODE1, NODE2 are two fault detecting points, and the conducting complementary with switch transistor T 3 of switch transistor T 2, Ud is busbar voltage source, and first is molten
Fracture of wire (10) is connected with busbar voltage source Ud, and the second fusible link (20) concatenates and then be connected to the first fusible link (10) two with T1
End.
5. a kind of close power amplifier circuit of seven bridge arms, five phase output with failure tolerance according to claim 4, special
Sign is: the switch transistor T 4 is connected to NODE1 test point and Sn1Between, switch transistor T 3 is serially connected in public bridge arm midpoint and load
Between middle line, switch transistor T 2 is serially connected between spare bridge arm midpoint and load neutral.
6. a kind of close power amplifier circuit of seven bridge arms, five phase output with failure tolerance according to claim 1, special
Sign is: the circuit further include circuit detection module, reconstructed module and control signal switching module, the circuit detection module,
Reconstructed module and control signal switching module are electrically connected with main power circuit, and the circuit detection module is used for real-time detection
The state of public bridge arm main power circuit transfers information to topology reconstruction and cuts with control signal when fault-signal occurs in monitoring
Change the mold block；Isolation circuit in reconstructed module from public bridge arm for rapidly cutting off fault power pipe, control signal switching
Module is used to the control signal of fault power pipe passing to close power amplifier controller, by controller by switching signal by failure pipe
Switch to redundant power pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811228.7A CN109039132B (en) | 2018-07-23 | 2018-07-23 | Seven-bridge-arm five-phase output switch power amplifier circuit with fault-tolerant characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811228.7A CN109039132B (en) | 2018-07-23 | 2018-07-23 | Seven-bridge-arm five-phase output switch power amplifier circuit with fault-tolerant characteristic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109039132A true CN109039132A (en) | 2018-12-18 |
| CN109039132B CN109039132B (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810811228.7A Active CN109039132B (en) | 2018-07-23 | 2018-07-23 | Seven-bridge-arm five-phase output switch power amplifier circuit with fault-tolerant characteristic |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740663A (en) * | 2020-05-18 | 2020-10-02 | 北京理工大学 | Method for inhibiting transition process of three-phase four-switch fault-tolerant control system |
| CN111894979A (en) * | 2020-07-29 | 2020-11-06 | 南京邮电大学 | Multi-bridge arm switch power amplifier circuit with fault-tolerant function |
| CN112491375A (en) * | 2020-11-02 | 2021-03-12 | 南京邮电大学 | Five-level multi-bridge-arm switch power amplifier circuit |
| CN116498651A (en) * | 2023-04-21 | 2023-07-28 | 华中科技大学 | Switch short circuit fault tolerance control method and system for magnetic suspension bearing |
| CN116498651B (en) * | 2023-04-21 | 2024-05-14 | 华中科技大学 | Switch short circuit fault tolerance control method and system for magnetic suspension bearing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740663A (en) * | 2020-05-18 | 2020-10-02 | 北京理工大学 | Method for inhibiting transition process of three-phase four-switch fault-tolerant control system |
| CN111894979A (en) * | 2020-07-29 | 2020-11-06 | 南京邮电大学 | Multi-bridge arm switch power amplifier circuit with fault-tolerant function |
| CN112491375A (en) * | 2020-11-02 | 2021-03-12 | 南京邮电大学 | Five-level multi-bridge-arm switch power amplifier circuit |
| CN116498651A (en) * | 2023-04-21 | 2023-07-28 | 华中科技大学 | Switch short circuit fault tolerance control method and system for magnetic suspension bearing |
| CN116498651B (en) * | 2023-04-21 | 2024-05-14 | 华中科技大学 | Switch short circuit fault tolerance control method and system for magnetic suspension bearing |
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| Publication number | Publication date |
|---|---|
| CN109039132B (en) | 2020-08-14 |
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