CN104485829B - The six switching tube circuit topologies and its monitoring method of non-isolation type full-bridge inverter - Google Patents
The six switching tube circuit topologies and its monitoring method of non-isolation type full-bridge inverter Download PDFInfo
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- CN104485829B CN104485829B CN201410851294.9A CN201410851294A CN104485829B CN 104485829 B CN104485829 B CN 104485829B CN 201410851294 A CN201410851294 A CN 201410851294A CN 104485829 B CN104485829 B CN 104485829B
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1225—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to internal faults, e.g. shoot-through
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- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of six switching tube circuit topologies of non-isolation type full-bridge inverter, on the basis of existing six switching tubes circuit topology, the first inductance L1It is connected with the first electric capacity C1One end, and the first electric capacity C1One end L lines, the second electric capacity C respectively with power network2One end connection, the first electric capacity C1The other end and the second electric capacity C2One end connection and connection first resistor R1One end；The second electric capacity C2The other end and the second inductance L2Other end connection, and be connected with the N lines of power network；The first resistor R1The other end connect dc bus negative electrode or anode；The invention also discloses a kind of monitoring method of six switching tube circuit topologies of non-isolation type full-bridge inverter, the present invention is by detecting first resistor R1The voltage at two ends, can interpolate that out whether the 5th switching tube, the 6th switching tube fail, and then turn off protection inverter in time, it is to avoid inverter is further damaged.
Description
Technical field
The invention belongs to six switching tube circuit topology technical fields of non-isolation type full-bridge inverter, and in particular to Yi Zhongfei
The six switching tube circuit topologies and its monitoring method of isolated form full-bridge inverter.
Background technology
The modulation system that six switching tube circuit topologies of existing non-isolation type full-bridge inverter are used is modulated for unipolarity,
I.e. in the positive half cycle of power network, S5Normal open, S1And S6Simultaneously turn on shut-off, S2、S3、S4Chang Guan；In power network negative half period, S2Normal open, S3
And S4Simultaneously turn on shut-off, S1、S5、S6Chang Guan.
Under the control mode, switching tube S3And S6Once being damaged or its drive circuit breaking down, inverter is still
Its working condition can be maintained, simply current harmonics, and the common mode disturbances of increasing circuit can be brought, and circuit system itself can not be supervised
Measure the failure.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of six switching tube circuits of non-isolation type full-bridge inverter
Topology and its monitoring method.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The embodiment of the present invention provides a kind of six switching tube circuit topologies of non-isolation type full-bridge inverter, including first switch
Pipe S1, second switch pipe S2, the 3rd switching tube S3, the 4th switching tube S4, the 5th switching tube S5, the 6th switching tube S6, the one or two pole
Pipe D1, the second diode D2, the first inductance L1, the second inductance L2；The first switch pipe S1Drain electrode and the 4th switching tube S4's
Drain electrode is connected with the anode of dc bus, the first switch pipe S1Source electrode and second switch pipe S2Drain electrode connection, described the
Two switching tube S2Source electrode and the 3rd switching tube S3Drain electrode connection, the 3rd switching tube S3Source electrode and the 6th switching tube S6
Source electrode and dc bus negative electrode connect, the 4th switching tube S4Source electrode and the 5th switching tube S5Drain electrode connection, the 5th
Switching tube S5Source electrode and the 6th switching tube S6Drain electrode connection, the first diode D1Negative electrode and first switch pipe S1
Source electrode connection, the first diode D1Anode and the 5th switching tube S5Source electrode connection, the second diode D2The moon
Pole and the S of the 4th switching tube4Source electrode connection, the second diode D2Anode and second switch pipe S2Source electrode connection, institute
State the first inductance L1One end connect the L lines of power network, the other end and first switch pipe S1Source electrode connection, the second inductance L2
One end connect the N lines of power network, the other end and the 4th switching tube S4Source electrode connection；The first inductance L1It is connected with the first electricity
Hold C1One end, and the first electric capacity C1One end L lines, the second electric capacity C respectively with power network2One end connection, described the
One electric capacity C1The other end and the second electric capacity C2One end connection and connection first resistor R1One end；The second electric capacity C2's
The other end and the second inductance L2Other end connection, and be connected with the N lines of power network；The first resistor R1The other end connection
The negative electrode or anode of dc bus.
The embodiment of the present invention also provides a kind of monitoring method of six switching tube circuit topologies of non-isolation type full-bridge inverter,
This method is：According to first resistor R in six switching tube circuit topologies1The voltage at two ends determines the 5th switching tube, the 6th switching tube
Whether fail.
In such scheme, this method is specially：In the positive half cycle of power network, the 5th switching tube S5Normal open, first switch pipe S1With
6th switching tube S6High-frequency work, simultaneously turns on shut-off, second switch pipe S2, the 3rd switching tube S3, the 4th switching tube S4Chang Guan,
In first switch pipe S1With the 6th switching tube S6When opening, Va=Vbus, Vb=0, VR1=0；First switch pipe S1With the 6th switch
Pipe S6During shut-off, first switch pipe S1The voltage at two ends is changed into 0.5V from 0bus, second switch pipe S2The voltage at two ends is by VbusIt is changed into
0.5Vbus, the voltage at the 6th switching tube S6 two ends is changed into 0.5V from 0bus, VR1=0；The sampled voltage at the first resistor two ends is
For 0V, controller judges the 6th switching tube S6To be effective.
In such scheme, this method is specially：In first switch pipe S1, the 6th switching tube S6When opening, Va=Vbus, Vb=
0.5Vbus, VR1=0.25Vbus, first resistor R1The sampled voltage at two ends is 0.25Vbus, controller can judge that the 6th opens
Close pipe S6Failure, and then turn off inverter.
In such scheme, this method is specially：In first switch pipe S1, the 6th switching tube S6During shut-off, Va=0.5Vbus,
Vb=0, VR1=-0.25Vbus, first resistor R1The sampled voltage at two ends is -0.25Vbus, controller can judge the 6th
Switching tube S6Failure, and then turn off inverter.
In such scheme, this method is specially：In power network negative half period, second switch pipe S2Normal open, the 3rd switching tube S3With
4th switching tube S4High-frequency work, simultaneously turns on shut-off, first switch pipe S1, the 5th switching tube S5, the 6th switching tube S6Chang Guan,
In the 3rd switching tube S3With the 4th switching tube S4When opening, the voltage V of a pointsa0The voltage V of=0, b pointb0=Vbus, resistance R1Two ends
Voltage VR1=0；3rd switching tube S3With the 4th switching tube S4During shut-off, the 3rd switching tube S3The voltage at two ends is changed into from 0
0.5Vbus, the 5th switching tube S5The voltage at two ends is by VbusIt is changed into 0.5Vbus, the 4th switching tube S4The voltage at two ends is changed into from 0
0.5Vbus, VR1=0；The first resistor R1The sampled voltage at two ends is 0V, and controller judges the 3rd switching tube S3To be effective.
In such scheme, this method is specially：In the 3rd switching tube S3, the 4th switching tube S4When opening, Va0=0.5Vbus,
Vb0=Vbus, VR1=0.25Vbus, first resistor R1The sampled voltage at two ends is 0.25Vbus, controller can judge the 3rd
Switching tube S3Failure, and then turn off inverter.
In such scheme, this method is specially：In the 3rd switching tube S3, the 4th switching tube S4During shut-off, Va0=0, Vb0=
0.5Vbus, VR1=-0.25Vbus, first resistor R1The sampled voltage at two ends is -0.25Vbus, controller can judge the 3rd
Switching tube S3Failure, and then turn off inverter.
Compared with prior art, the present invention is by detecting first resistor R1The voltage at two ends, can interpolate that out the 5th switch
Whether pipe, the 6th switching tube are failed, and then turn off protection inverter in time, it is to avoid inverter is further damaged；Meanwhile, by this
High-frequency noise in inversion circuit is passed back to bus capacitor by invention by resistance, further reduces the common mode disturbances of circuit.
Brief description of the drawings
Fig. 1 is the circuit diagram of the six switching tube circuit topologies of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
The embodiment of the present invention provides a kind of six switching tube circuit topologies of non-isolation type full-bridge inverter, as shown in figure 1, bag
Include first switch pipe S1, second switch pipe S2, the 3rd switching tube S3, the 4th switching tube S4, the 5th switching tube S5, the 6th switching tube
S6, the first diode D1, the second diode D2, the first inductance L1, the second inductance L2；The first switch pipe S1Drain electrode and the 4th
Switching tube S4Drain electrode and dc bus anode connect, the first switch pipe S1Source electrode and second switch pipe S2Drain electrode
Connection, the second switch pipe S2Source electrode and the 3rd switching tube S3Drain electrode connection, the 3rd switching tube S3Source electrode and
Six switching tube S6Source electrode and dc bus negative electrode connect, the 4th switching tube S4Source electrode and the 5th switching tube S5Leakage
Pole is connected, the 5th switching tube S5Source electrode and the 6th switching tube S6Drain electrode connection, the first diode D1Negative electrode and first
The S of switching tube1Source electrode connection, the first diode D1Anode and the 5th switching tube S5Source electrode connection, the described 2nd 2
Pole pipe D2Negative electrode and the 4th switching tube S4Source electrode connection, the second diode D2Anode and second switch pipe S2's
Source electrode is connected, the first inductance L1One end connect the L lines of power network, the other end and first switch pipe S1Source electrode connection, it is described
Second inductance L2One end connect the N lines of power network, the other end and the 4th switching tube S4Source electrode connection；The first inductance L1Even
It is connected to the first electric capacity C1One end, and the first electric capacity C1One end L lines, the second electric capacity C respectively with power network2One end
Connection, the first electric capacity C1The other end and the second electric capacity C2One end connection and connection first resistor R1One end；Described
Two electric capacity C2The other end and the second inductance L2Other end connection, and be connected with the N lines of power network；The first resistor R1's
The other end connects the negative electrode or anode of dc bus.
The embodiment of the present invention also provides a kind of monitoring method of six switching tube circuit topologies of non-isolation type full-bridge inverter,
This method is：According to first resistor R in six switching tube circuit topologies1The voltage at two ends determines the 3rd switching tube, the 6th switching tube
Whether fail.
This method is specially：In the positive half cycle of power network, the 5th switching tube S5Normal open, first switch pipe S1With the 6th switching tube
S6High-frequency work, simultaneously turns on shut-off, second switch pipe S2, the 3rd switching tube S3, the 4th switching tube S4Chang Guan, in first switch
Pipe S1With the 6th switching tube S6When opening, the voltage V of a pointsa0=Vbus, the voltage V of b pointsb0=0, resistance R1The voltage V at two endsR1=
0；First switch pipe S1With the 6th switching tube S6During shut-off, first switch pipe S1The voltage at two ends is changed into 0.5V from 0bus, second opens
Close pipe S2The voltage at two ends is by VbusIt is changed into 0.5Vbus, the 6th switching tube S6The voltage at two ends is changed into 0.5V from 0bus, VR1=0；Institute
State first resistor R1The sampled voltage at two ends is 0V, and controller judges the 6th switching tube S6To be effective.
If the 6th switching tube S6Failure, switch tube failure can typically be summarized as two kinds of situations：
(1) switching tubes S6Driving it is (open-minded) failure or can not be completely open-minded, show and open the pipe that opened the light in the period
Pressure drop increases.In S1, S6When opening, Va0=Vbus, Vb0=0.5Vbus, VR1=0.25Vbus, the sampled voltage at first resistor two ends
As 0.25Vbus, controller can judge the 6th switching tube S6It has been failed that, and then turn off inverter.
(2) switching tubes S6Driving (shut-off) failure or it is breakdown damage, show shut-off the period in can not turn off.
In first switch pipe S1, the 6th switching tube S6During shut-off, Va0=0.5Vbus, Vb0=0, VR1=-0.25Vbus, first resistor R1Two
The sampled voltage at end is -0.25Vbus, controller can judge the 6th switching tube S6It has been failed that, and then turn off inverter.
(1) this method is specially：In first switch pipe S1, the 6th switching tube S6When opening, Va0=Vbus, Vb0=
0.5Vbus, VR1=0.25Vbus, first resistor R1The sampled voltage at two ends is 0.25Vbus, controller can judge that the 6th opens
Close pipe S6Failure, and then turn off inverter.
(2) this method is specially：In first switch pipe S1, the 6th switching tube S6During shut-off, Va0=0.5Vbus, Vb0=0,
VR1=-0.25Vbus, first resistor R1The sampled voltage at two ends is -0.25Vbus, controller can judge the 6th switching tube
S6Failure, and then turn off inverter.
This method is specially：In power network negative half period, second switch pipe S2Normal open, the 3rd switching tube S3With the 4th switching tube
S4High-frequency work, simultaneously turns on shut-off, first switch pipe S1, the 5th switching tube S5, the 6th switching tube S6Chang Guan, in the 3rd switch
Pipe S3With the 4th switching tube S4When opening, the voltage V of a pointsa0The voltage V of=0, b pointb0=Vbus, resistance R1The voltage V at two endsR1=
0；3rd switching tube S3With the 4th switching tube S4During shut-off, the 3rd switching tube S3The voltage at two ends is changed into 0.5V from 0bus, the 5th opens
Close pipe S5The voltage at two ends is by VbusIt is changed into 0.5Vbus, the 4th switching tube S4The voltage at two ends is changed into 0.5V from 0bus, VR1=0；Institute
State first resistor R1The sampled voltage at two ends is 0V, and controller judges the 3rd switching tube S3To be effective.
If the 3rd switching tube S3Failure, switch tube failure can typically be summarized as two kinds of situations：
(1) switching tubes S3Driving it is (open-minded) failure or can not be completely open-minded, show and open the pipe that opened the light in the period
Pressure drop increases, in the 3rd switching tube S3, the 4th switching tube S4When opening, Va0=0.5Vbus, Vb0=Vbus, VR1=0.25Vbus, the
One resistance R1The sampled voltage at two ends is 0.25Vbus, controller can judge switching tube S3It has been failed that, and then turned off inverse
Become device.
(2) switching tubes S3Driving (shut-off) failure or it is breakdown damage, show shut-off the period in can not turn off,
In the 3rd switching tube S3, S4During shut-off, Va0=0, Vb0=0.5Vbus, VR1=-0.25Vbus, first resistor R1The sampling electricity at two ends
Pressure is -0.25Vbus, controller can judge switching tube S3It has been failed that, and then turn off inverter.
(1) this method is specially：In the 3rd switching tube S3, the 4th switching tube S4When opening, Va0=0.5Vbus, Vb0=
Vbus, VR1=0.25Vbus, first resistor R1The sampled voltage at two ends is 0.25Vbus, controller can judge the 3rd switch
Pipe S3Failure, and then turn off inverter.
(2) this method is specially：In the 3rd switching tube S3, the 4th switching tube S4During shut-off, Va0=0, Vb0=0.5Vbus,
VR1=-0.25Vbus, first resistor R1The sampled voltage at two ends is -0.25Vbus, controller can judge the 3rd switching tube
S3Failure, and then turn off inverter.
The first resistor R1The sampled voltage at two ends is obtained by following voltage circuit equation：
-Va0+VL1+Vg+VL2+Vb0=0 (1)
VC1+VC2=Vg (2)
VC1=Va0-VL1-VR1 (3)
VC2=-Vb0-VL2+VR1 (4)
Formula (3) is subtracted each other with formula (4), is obtained：
First inductance L1With the second inductance L2Inductance value it is identical, produced induced voltage is also identical, therefore in formula (5)
VL2-VL1=0, obtain：
And then, drawn by formula (1)：
Bring formula (7) into formula (3), (4), draw：
Electric capacity C1With C2Value it is identical, the current potential of its tie point passes through first resistor R by the negative electrode of dc bus1Clamper, electricity
Road enters after stable state, electric capacity C1With C2The voltage at two ends, power network clamp down on effect under change in the same direction, flow through electric capacity C1Electric current
With flowing through electric capacity C2Electric current it is equal, and flow through resistance R1Electric current be almost 0, the pressure drop at resistance two ends is approximately equal to 0.Therefore formula
(8), formula (9) is equivalent to formula (10), formula (11):
Convolution (10), formula (11), rewritable formula (6) is formula (12)：
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (8)
1. a kind of six switching tube circuit topologies of non-isolation type full-bridge inverter, it is characterised in that：Including first switch pipe S1,
Two switching tube S2, the 3rd switching tube S3, the 4th switching tube S4, the 5th switching tube S5, the 6th switching tube S6, the first diode D1,
Two diode D2, the first inductance L1, the second inductance L2；The first switch pipe S1Drain electrode and the 4th switching tube S4Drain electrode with it is straight
Flow the anode connection of bus, the first switch pipe S1Source electrode and second switch pipe S2Drain electrode connection, the second switch pipe
S2Source electrode and the 3rd switching tube S3Drain electrode connection, the 3rd switching tube S3Source electrode and the 6th switching tube S6Source electrode with
The negative electrode connection of dc bus, the 4th switching tube S4Source electrode and the 5th switching tube S5Drain electrode connection, the 5th switching tube S5
Source electrode and the 6th switching tube S6Drain electrode connection, the first diode D1Negative electrode and first switch pipe S1Source electrode connect
Connect, the first diode D1Anode and the 5th switching tube S5Source electrode connection, the second diode D2Negative electrode and the 4th
The S of switching tube4Source electrode connection, the second diode D2Anode and second switch pipe S2Source electrode connection, it is described first electricity
Feel L1One end connect the L lines of power network, the other end and first switch pipe S1Source electrode connection, the second inductance L2One end connect
The N lines got access to grid, the other end and the 4th switching tube S4Source electrode connection；The first inductance L1It is connected with the first electric capacity C1One
End, and the first electric capacity C1One end L lines, the second electric capacity C respectively with power network2One end connection, the first electric capacity C1
The other end and the second electric capacity C2One end connection and connection first resistor R1One end；The second electric capacity C2The other end with
Second inductance L2Other end connection, and be connected with the N lines of power network；The first resistor R1The other end connection dc bus
Negative electrode or anode.
2. a kind of monitoring method of six switching tube circuit topologies of non-isolation type full-bridge inverter as claimed in claim 1, its
It is characterised by, this method is：According to first resistor R in six switching tube circuit topologies1The voltage at two ends determines the 5th switching tube,
Whether six switching tubes fail.
3. the monitoring method of six switching tube circuit topologies of non-isolation type full-bridge inverter according to claim 2, it is special
Levy and be, this method is specially：In the positive half cycle of power network, the 5th switching tube S5Normal open, first switch pipe S1With the 6th switching tube S6
High-frequency work, simultaneously turns on shut-off, second switch pipe S2, the 3rd switching tube S3, the 4th switching tube S4Chang Guan, in first switch pipe
S1With the 6th switching tube S6When opening, the voltage V of a pointsa0=Vbus, VbusRepresent DC bus-bar voltage, the voltage V of b pointsb0=0, electricity
Hinder the voltage V at R1 two endsR1=0；First switch pipe S1With the 6th switching tube S6During shut-off, first switch pipe S1The voltage at two ends is by 0
It is changed into 0.5Vbus, second switch pipe S2The voltage at two ends is by VbusIt is changed into 0.5Vbus, the voltage at the 6th switching tube S6 two ends is by 0 change
For 0.5Vbus, VR1=0；The sampled voltage at the first resistor two ends is 0V, and controller judges the 6th switching tube S6To be effective.
4. the monitoring method of six switching tube circuit topologies of the non-isolation type full-bridge inverter according to Claims 2 or 3, its
It is characterised by, this method is specially：In first switch pipe S1, the 6th switching tube S6When opening, the voltage V of a pointsa0=Vbus, Vbus
Represent DC bus-bar voltage, the voltage V of b pointsb0=0.5Vbus, the voltage V at resistance R1 two endsR1=0.25Vbus, first resistor R1Two
The sampled voltage at end is 0.25Vbus, controller can judge the 6th switching tube S6Failure, and then turn off inverter.
5. the monitoring method of six switching tube circuit topologies of the non-isolation type full-bridge inverter according to Claims 2 or 3, its
It is characterised by, this method is specially：In first switch pipe S1, the 6th switching tube S6During shut-off, the voltage V of a pointsa0=0.5Vbus,
VbusRepresent DC bus-bar voltage, the voltage V of b pointsb0The voltage V at=0, resistance R1 two endsR1=-0.25Vbus, first resistor R1Two
The sampled voltage at end is -0.25Vbus, controller can judge the 6th switching tube S6Failure, and then turn off inverter.
6. the monitoring method of six switching tube circuit topologies of non-isolation type full-bridge inverter according to claim 2, it is special
Levy and be, this method is specially：In power network negative half period, second switch pipe S2Normal open, the 3rd switching tube S3With the 4th switching tube S4
High-frequency work, simultaneously turns on shut-off, first switch pipe S1, the 5th switching tube S5, the 6th switching tube S6Chang Guan, in the 3rd switching tube
S3With the 4th switching tube S4When opening, the voltage V of a pointsa0=0, VbusRepresent DC bus-bar voltage, the voltage V of b pointsb0=Vbus, electricity
Hinder R1The voltage V at two endsR1=0；3rd switching tube S3With the 4th switching tube S4During shut-off, the 3rd switching tube S3The voltage at two ends is by 0
It is changed into 0.5Vbus, the 5th switching tube S5The voltage at two ends is by VbusIt is changed into 0.5Vbus, the 4th switching tube S4The voltage at two ends is changed into from 0
0.5Vbus, VR1=0；The first resistor R1The sampled voltage at two ends is 0V, and controller judges the 3rd switching tube S3To be effective.
7. the monitoring method of six switching tube circuit topologies of the non-isolation type full-bridge inverter according to claim 2 or 6, its
It is characterised by, this method is specially：In the 3rd switching tube S3, the 4th switching tube S4When opening, the voltage V of a pointsa0=0.5Vbus,
VbusRepresent DC bus-bar voltage, the voltage V of b pointsb0=Vbus, resistance R1The voltage V at two endsR1=0.25Vbus, first resistor R1Two
The sampled voltage at end is 0.25Vbus, controller can judge the 3rd switching tube S3Failure, and then turn off inverter.
8. the monitoring method of six switching tube circuit topologies of the non-isolation type full-bridge inverter according to claim 2 or 6, its
It is characterised by, this method is specially：In the 3rd switching tube S3, the 4th switching tube S4During shut-off, the voltage V of a pointsa0=0, VbusGeneration
Table DC bus-bar voltage, the voltage V of b pointsb0=0.5Vbus, resistance R1The voltage V at two endsR1=-0.25Vbus, first resistor R1Two
The sampled voltage at end is -0.25Vbus, controller can judge the 3rd switching tube S3Failure, and then turn off inverter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851294.9A CN104485829B (en) | 2014-12-31 | 2014-12-31 | The six switching tube circuit topologies and its monitoring method of non-isolation type full-bridge inverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851294.9A CN104485829B (en) | 2014-12-31 | 2014-12-31 | The six switching tube circuit topologies and its monitoring method of non-isolation type full-bridge inverter |
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| Publication Number | Publication Date |
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| CN104485829A CN104485829A (en) | 2015-04-01 |
| CN104485829B true CN104485829B (en) | 2017-08-01 |
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| CN201410851294.9A Active CN104485829B (en) | 2014-12-31 | 2014-12-31 | The six switching tube circuit topologies and its monitoring method of non-isolation type full-bridge inverter |
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| CN108964503A (en) * | 2018-09-30 | 2018-12-07 | 华南理工大学 | A kind of novel single-phase non-isolated active clamp MOSFET inverter |
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| JP2007174792A (en) * | 2005-12-21 | 2007-07-05 | Kawamura Electric Inc | System interconnection inverter device |
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| CN1746690A (en) * | 2005-10-08 | 2006-03-15 | 华北电力大学（北京） | Zero-line and breakage detector of three-phase and four-line system |
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