CN108521234A - A kind of diode clamp with cascade hybrid five-electrical level inverter - Google Patents
A kind of diode clamp with cascade hybrid five-electrical level inverter Download PDFInfo
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- CN108521234A CN108521234A CN201810384955.XA CN201810384955A CN108521234A CN 108521234 A CN108521234 A CN 108521234A CN 201810384955 A CN201810384955 A CN 201810384955A CN 108521234 A CN108521234 A CN 108521234A
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- power switch
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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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of diode clamps and the hybrid five-electrical level inverter of cascade.The inverter includes input independent direct current diode clamp bit location, six winding high frequency transformers, afterflow backfeed loop and ac filter output connected in sequence；Wherein input independent direct current diode clamp bit location generates independent level state；High frequency transformer transmits electric energy；Afterflow backfeed loop provides secondary side energy continuous current circuit and provides energy back circuit to perception and capacitive load；Smooth AC wave shape output is realized in ac filter output.In the present invention independent direct current unit be uniformly controlled, the symmetrical steady operation of diode clamp bit location, can realize the power input of bigger and output under equivalent device, have the advantages that cycle translation circuit is simple and reliable, concatenation unit autgmentability is abundant.
Description
Technical field
The invention belongs to Technics of Power Electronic Conversion technical field, especially a kind of diode clamp and hybrid five level of cascade
Inverter.
Background technology
Multi-electrical level inverter in industrial production and life there is important value, classical topological structure to be proved to big
Application in the high power of range in terms of pressure is a feasible method, but is constrained to working frequency and will produce prodigious make an uproar
Sound, and volume is heavy；Itd is proposed that three level neutral point clampers (NPC) were inverse with 1980 from Japanese scholars south wave Jiang Zhang (A.Nabae)
Since becoming device, multi-level inverter circuit big topological structure is broadly divided into following three classes by years development：Diode clamp bit-type is more
Electrical level inverter, striding capacitance type multi-electrical level inverter and cascaded multilevel inverter.
Striding capacitance type multi-electrical level inverter has received comparable pass due to its well-known striding capacitance structure
Note, although it has many advantages, it has the shortcomings that volume is big, control method is complicated, because its volume is big, huge number
Capacitor and the highly difficult balance of voltage require so that its development be restricted.
There is cascaded multilevel inverter the cascade multilevel inverter of independent DC power supply to be different from diode and electricity
Hold the semibridge system structure of clamper, it is exactly without considering electricity using the maximum benefit of independent direct current sourc using full-bridge as concatenation unit
The uneven influence brought of pressure, is also easy to realize modularization, facilitates Assembling and debugging, but the electricity of cascaded multilevel inverter
Flat number and the number of phases and independent direct current sourc number are proportional, are not suitable for the excessive application of level number, so being often suitable for low
The occasion of control source.
There are inherent shortcoming, existing application is most common for striding capacitance type multi-electrical level inverter and cascaded multilevel inverter
It is the three-level inverter in diode clamp bit-type multi-level circuit, three-level inverter can realize twice two-level inverter
Output.With the development of high direct voltage technology and universal, in order to improve the ability to bear of high direct voltage, setting for inverter is improved
Standby capacity, it is therefore desirable to study the inverter of five level and higher level number.Diode clamp bit-type inverter mainly applies three electricity
It is flat, it is extended to five level and higher requirement is proposed to system control, DC capacitor is pressed and is difficult to realize；How electric striding capacitance type is
Flat inverter is since capacitance number demand is excessive, even the also less use of three level；Cascaded multilevel inverter has abundant
Scalability, can be applied to any level number, but the increase of each of which level number is required for additional configuration one solely
Vertical DC power supply, it is expensive.
Invention content
Present invention aims at a kind of more level concatenation units of two-diode clamp of offer symmetrically to work, capacitance voltage is kept
Stablize, be four times in ordinary inverter input voltage, magnetic core of transformer bidirectional excitation, the diode clamp of Two-way energy transfer and grade
Join hybrid five-electrical level inverter.
Realize that the technical solution of the object of the invention is：A kind of diode clamp with cascade hybrid five level inverse conversion
Device, including input independent direct current diode clamp bit location connected in sequence, high frequency transformer, afterflow backfeed loop, ac filter
Output, wherein：
Input independent direct current diode clamp bit location is for generating independent level state；
High frequency transformer is transmitted for electric energy, works in normal shock state；
Afterflow backfeed loop is for providing secondary side energy continuous current circuit and providing energy back to perception and capacitive load
Circuit；
Ac filter output exports for realizing smooth AC wave shape.
Further, the input independent direct current diode clamp bit location include the first DC power supply, the second DC power supply,
First primary side winding, the second primary side winding, the first power switch tube, the second power switch tube, third power switch tube, the 4th work(
Rate switching tube, the 5th power switch tube, the 6th power switch tube, the 7th power switch tube, the 8th power switch tube, the one or two pole
Pipe, the second diode, third diode, the 4th diode, the 5th diode, the 6th diode, the 7th diode, the eight or two pole
Pipe, the 9th diode, the tenth diode, the 11st diode, the 12nd diode, the 13rd diode, the 14th diode,
15th diode, the 16th diode, the first capacitance, the second capacitance, third capacitance, the 4th capacitance；
The anode of first DC power supply is connect with the different name end of the first primary side winding, the Same Name of Ends of the first primary side winding
It is connect with the anode of the first diode, the cathode of the first diode is connect with the cathode of the first DC power supply, and the first capacitance is just
Pole, the drain electrode of the first power switch tube, the drain electrode of the second power switch tube are connected with the anode of the first DC power supply, and the two or two
Pole pipe inverse parallel in the first power switch tube both ends, i.e., the cathode of the second diode connect with the drain electrode of the first power switch tube,
The anode of second diode is connect with the source electrode of the first power switch tube, and the inverse parallel of third diode is in the second power switch tube two
End, the i.e. cathode of third diode are opened with the drain electrode connection of the second power switch tube, anode and the second power of third diode
The source electrode connection of pipe is closed, the cathode of the first capacitance is connect with the anode of the second capacitance, cathode, the third power switch of the second capacitance
The source electrode of pipe, the 4th power switch tube source electrode be connected with the cathode of the first DC power supply, the 6th diode inverse parallel is in
Three power switch tube both ends, the i.e. cathode of the 6th diode and the drain electrode connection of third power switch tube, the sun of the 6th diode
Pole is connect with the source electrode of third power switch tube, and the 7th diode inverse parallel is in the 4th power switch tube both ends, i.e. the seven or two pole
The drain electrode connection of the cathode of pipe and the 4th power switch tube, the source electrode company of the anode of the 7th diode and the 4th power switch tube
It connects, the anode of the second DC power supply is connect with the different name end of the second primary side winding, the Same Name of Ends of the second primary side winding and the eight or two
The anode of pole pipe connects, and the cathode of the 8th diode is connect with the cathode of the second DC power supply, the anode of third capacitance, the 5th work(
The drain electrode of rate switching tube, the drain electrode of the 6th power switch tube are connected with the anode of the second DC power supply, and the 9th diode is instead simultaneously
It is coupled to the 5th power switch tube both ends, i.e. the cathode of the 9th diode connect with the drain electrode of the 5th power switch tube, the 9th 2 pole
The anode of pipe is connect with the source electrode of the 5th power switch tube, and the tenth diode inverse parallel is in the 6th power switch tube both ends, i.e.,
The drain electrode connection of the cathode of ten diodes and the 6th power switch tube, the anode and the 6th power switch tube of the tenth diode source
Pole connects, and the cathode of third capacitance is connect with the anode of the 4th capacitance, the cathode of the 4th capacitance, the source of the 7th power switch tube
Pole, the 8th power switch tube source electrode be connected with the cathode of the second DC power supply, the 14th diode inverse parallel is in the 7th work(
The drain electrode connection at rate switching tube both ends, the i.e. cathode of the 14th diode and the 7th power switch tube, the sun of the 14th diode
Pole is connect with the source electrode of the 7th power switch tube, and the 15th diode inverse parallel is in the 8th power switch tube both ends, i.e., the 15th
The drain electrode connection of the cathode of diode and the 8th power switch tube, the anode and the 8th power switch tube of the 15th diode source
Pole connects, and the anode of the 4th diode is connect with the cathode of the first capacitance, the cathode of the 4th diode, the moon of the 12nd diode
Pole, the 4th primary side winding Same Name of Ends connect with the source electrode of the first power switch tube, the cathode and the first capacitance of the 5th diode
Cathode connection, anode, the anode of the 16th diode, the Same Name of Ends of third primary side winding and the 4th power of the 5th diode
The drain electrode of switching tube connects, and the anode of the 11st pole pipe is connect with the cathode of third capacitance, the cathode of the 11st diode, the tenth
The anode of two diodes is connect with the source electrode of the 5th power switch tube, and the cathode of the tenth triode connects with the cathode of third capacitance
It connects, the anode of the 13rd diode is connect with the drain electrode of the 8th power switch tube, the cathode of the tenth hexode, third primary side winding
Same Name of Ends connect with the source electrode of the second power switch tube.
Further, the high frequency transformer includes third primary side winding, the 4th primary side winding, the first vice-side winding,
Two vice-side windings；
The Same Name of Ends of the third primary side winding, the cathode of the tenth hexode are connect with the source electrode of the second power switch tube,
The non-same polarity of third primary side winding, the 13rd diode anode connect with the drain electrode of the 8th power switch tube, the first secondary side
The Same Name of Ends of the non-same polarity of winding and the second vice-side winding connects.
Further, the afterflow backfeed loop is opened including the 9th power switch tube, the 17th diode, the tenth power
Guan Guan, the 18th diode, the 11st power switch tube, the 19th diode, the 12nd power switch tube, the 22nd pole
Pipe；
The drain electrode of 9th power switch tube is connect with the Same Name of Ends of the first vice-side winding, the source of the 9th power switch tube
Pole is connect with the anode of the 17th diode, the cathode of the 17th diode, the drain electrode of the tenth power switch tube and the 12nd work(
The drain electrode of rate switching tube connects, and the source electrode of the 12nd power switch tube is connect with the anode of the 20th diode, the 22nd pole
The cathode of pipe is connect with the non-same polarity of the second vice-side winding, the source electrode of the tenth power switch tube and the 11st power switch tube
Drain electrode connection, the 18th diode inverse parallel is in the tenth power switch tube both ends, the i.e. cathode and the tenth work(of the 18th diode
The drain electrode connection of rate switching tube, the anode of the 18th diode are connect with the source electrode of the tenth power switch tube, and the 11st power is opened
The source electrode for closing pipe is connect with the non-same polarity of the first vice-side winding, and the 19th diode inverse parallel is in the 11st power switch tube two
End, i.e. the drain electrode of the cathode of the 19th diode and the 11st power switch tube connects, the anode and the tenth of the 19th diode
The source electrode of one power switch tube connects.
Further, the ac filter output module includes output inductor, output filter capacitor and AC load；
One end of the output inductor simultaneously with the drain electrode of the tenth power switch tube, the 17th diode cathode,
The cathode of 18th diode is connect with the common end of the drain electrode of the 12nd power switch tube, the other end of output inductor with
One end of output filter capacitor connects, and the other end of output filter capacitor is connect with the non-same polarity of the first vice-side winding, exchanges
One end of load and one end of output filter capacitor, output inductor common end connect, the other end of AC load with it is defeated
Go out the other end connection of filter capacitor.
Compared with prior art, the present invention its remarkable advantage is：(1) diode clamp proposed and hybrid five electricity of cascade
The advantages of flat inverter combines three level diode clamps and concatenation unit, is ensureing single diode steady operation
While, improve scalability；(2) compared with diode clamp five-electrical level inverter, the hybrid circuit is due to only needing solely
It is vertical to control single cascade junior unit, thus overall control strategy is simpler, and each junior unit is to need maintenance two straight
The balance of voltage that galvanic electricity is held, therefore need to only ensure symmetrical work by hardware circuit, do not need additional capacitance voltage inspection
Slowdown monitoring circuit；(3) the more traditional Industrial Frequency Transformer of the high-frequency inversion technology of use, can make the volume of transformer greatly reduce,
And the noise generated and loss greatly reduce, transformer bidirectional excitation ensure that making full use of for magnetic core；(4) five electricity used
Ordinary telegram road to improve four times to the overall ability to bear grade of input voltage, resistance to high direct voltage, and more level to export
Voltage waveform distortion reduces.
Description of the drawings
Fig. 1 is the electrical block diagram of diode clamp of the present invention and the hybrid five-electrical level inverter of cascade.
Fig. 2 is the circuit topological structure of full-wave rectification diode clamp of the present invention and the hybrid five-electrical level inverter of cascade
Figure.
Specific implementation mode
In conjunction with Fig. 1, Fig. 2, diode clamp of the present invention and the hybrid five-electrical level inverter of cascade, by input connected in sequence
Independent direct current diode clamp bit location 1, six winding high frequency transformers 2, afterflow backfeed loop 3, ac filter output 4 are constituted,
In：
Independent direct current diode clamp bit location 1 is inputted for dividing equally input direct-current source voltage, plurality of level voltage is generated and carries
Supply subsequent conditioning circuit；
Six winding high frequency transformers 2 are used for the transmission of electric energy, work in normal shock state；
Afterflow backfeed loop 3 is for providing secondary side energy continuous current circuit and providing energy back to perception and capacitive load
Circuit；Afterflow backfeed loop 3 is used to control the flow direction of electric current；
For being filtered to exporting, the distortion for reducing the output of sinusoidal voltage electric current is realized smoothly for ac filter output 4
AC wave shape is defeated.
Further, the input independent direct current diode clamp bit location 1 includes the first DC power supply Ui1, the second direct current
Power supply Ui2, the first primary side winding N1, the second primary side winding N2, the first power switch tube S 1, the second power switch tube S 2, third
Power switch tube S 3, the 4th power switch tube S 4, the 5th power switch tube S 5, the 6th power switch tube S 6, the 7th power switch
Pipe S7, the 8th power switch tube S 8, the first diode D1, the second diode D2, third diode D3, the 4th diode D4,
Five diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8, the 9th diode D9, the tenth diode D10,
11st diode D11, the 12nd diode D12, the 13rd diode D13, the 14th diode D14, the 15th diode
D15, the 16th diode D16, the first capacitance C1, the second capacitance C2, third capacitance C3, the 4th capacitance C4；
The anode of the first DC power supply Ui1 is connect with the different name end of the first primary side winding N1, the first primary side winding N1
Same Name of Ends connect with the anode of the first diode D1, the cathode of the cathode of the first diode D1 and the first DC power supply Ui1 connects
It connects, the anode of the first capacitance C1, the drain electrode of the first power switch tube S 1, the drain electrode of the second power switch tube S 2 and the first direct current
The anode of source Ui1 is connected, and the second diode D2 inverse parallels are in 1 both ends of the first power switch tube S, i.e. the moon of the second diode D2
Pole and the drain electrode connection of the first power switch tube S 1, the source electrode company of the anode of the second diode D2 and the first power switch tube S 1
It connects, third diode D3 inverse parallels are opened in 2 both ends of the second power switch tube S, the i.e. cathode of third diode D3 with the second power
The anode of the drain electrode connection, third diode D3 of closing pipe S2 is connect with the source electrode of the second power switch tube S 2, the first capacitance C1's
Cathode is connect with the anode of the second capacitance C2, and the cathode of the second capacitance C2, the source electrode of third power switch tube S 3, the 4th power are opened
The source electrode for closing pipe S4 is connected with the cathode of the first DC power supply Ui1, and the 6th diode D6 inverse parallels are in third power switch tube
The drain electrode connection of the both ends S3, the i.e. cathode of the 6th diode D6 and third power switch tube S 3, the anode of the 6th diode D6 with
The source electrode of third power switch tube S 3 connects, and the 7th diode D7 inverse parallels are in 4 both ends of the 4th power switch tube S, i.e., the seven or two
Drain electrode connection, the anode of the 7th diode D7 and the 4th power switch tube S 4 of the cathode of pole pipe D7 and the 4th power switch tube S 4
Source electrode connection, the second DC power supply Ui2 anode connect with the different name end of the second primary side winding N2, the second primary side winding N2's
Same Name of Ends is connect with the anode of the 8th diode D8, and the cathode of the 8th diode D8 is connect with the cathode of the second DC power supply Ui2,
The anode of third capacitance C3, the drain electrode of the 5th power switch tube S 5, the drain electrode of the 6th power switch tube S 6 and the second DC power supply
The anode of Ui2 is connected, and the 9th diode D9 inverse parallels are in 5 both ends of the 5th power switch tube S, the i.e. cathode of the 9th diode D9
The anode of drain electrode connection, the 9th diode D9 with the 5th power switch tube S 5 is connect with the source electrode of the 5th power switch tube S 5,
Tenth diode D10 inverse parallels are in 6 both ends of the 6th power switch tube S, the i.e. cathode and the 6th power switch of the tenth diode D10
The drain electrode connection of pipe S6, the anode of the tenth diode D10 are connect with the source electrode of the 6th power switch tube S 6, and third capacitance C3's is negative
Pole is connect with the anode of the 4th capacitance C4, the cathode of the 4th capacitance C4, source electrode, the 8th power switch of the 7th power switch tube S 7
The source electrode of pipe S8 is connected with the cathode of the second DC power supply Ui2, and the 14th diode D14 inverse parallels are in the 7th power switch tube
The drain electrode connection at the both ends S7, the i.e. cathode of the 14th diode D14 and the 7th power switch tube S 7, the 14th diode D14
Anode is connect with the source electrode of the 7th power switch tube S 7, the 15th diode D15 inverse parallels in 8 both ends of the 8th power switch tube S,
I.e. the drain electrode connection of the cathode of the 15th diode D15 and the 8th power switch tube S 8, the 15th diode D15 anode and the
The source electrode of eight power switch tube Ss 8 connects, and the anode of the 4th diode D4 is connect with the cathode of the first capacitance C1, the 4th diode
The cathode of D4, the cathode of the 12nd diode D12, the 4th primary side winding N4 Same Name of Ends and the first power switch tube S 1 source electrode
Connection, the cathode of the 5th diode D5 are connect with the cathode of the first capacitance C1, anode, the 16th diode of the 5th diode D5
The anode of D16, the Same Name of Ends of third primary side winding N3 are connect with the drain electrode of the 4th power switch tube S 4, the 11st pole pipe D11's
Anode is connect with the cathode of third capacitance C3, the cathode of the 11st diode D11, the anode and the 5th of the 12nd diode D12
The source electrode of power switch tube S 5 connects, and the cathode of the tenth triode D13 is connect with the cathode of third capacitance C3, the 13rd diode
The anode of D13 is connect with the drain electrode of the 8th power switch tube S 8, the cathode of the tenth hexode D16, third primary side winding N3 it is same
Name end is connect with the source electrode of the second power switch tube S 2.
Further, the high frequency transformer 2 include third primary side winding N3, the 4th primary side winding N4, the first secondary side around
Group N5, the second vice-side winding N6；
The source of the Same Name of Ends of the third primary side winding N3, the cathode and the second power switch tube S 2 of the tenth hexode D16
Pole connects, the drain electrode of the non-same polarity of third primary side winding N3, the anode and the 8th power switch tube S 8 of the 13rd diode D13
The Same Name of Ends connection of connection, the non-same polarity of the first vice-side winding N5 and the second vice-side winding N6.
6, further, the afterflow backfeed loop 3 includes the 9th power switch tube S 9, the 17th diode D17, the
Ten power switch tube Ss 10, the 18th diode D18, the 11st power switch tube S 11, the 19th diode D19, the 12nd work(
Rate switching tube S12, the 20th diode D20；
The drain electrode of 9th power switch tube S 9 is connect with the Same Name of Ends of the first vice-side winding N5, the 9th power switch tube
The source electrode of S9 is connect with the anode of the 17th diode D17, the cathode of the 17th diode D17, the tenth power switch tube S 10
Drain electrode is connect with the drain electrode of the 12nd power switch tube S 12, the source electrode and the 20th diode of the 12nd power switch tube S 12
The anode of D20 connects, and the cathode of the 20th diode D20 is connect with the non-same polarity of the second vice-side winding N6, and the tenth power is opened
The source electrode for closing pipe S10 is connect with the drain electrode of the 11st power switch tube S 11, and the 18th diode D18 inverse parallels are in the tenth power
The both ends switching tube S10, i.e. the cathode of the 18th diode D18 connect with the drain electrode of the tenth power switch tube S 10, the 18th pole
The anode of pipe D18 is connect with the source electrode of the tenth power switch tube S 10, the source electrode of the 11st power switch tube S 11 and the first secondary side
The non-same polarity of winding N5 connects, and the 19th diode D19 inverse parallels are in 11 both ends of the 11st power switch tube S, i.e., the 19th
The drain electrode connection of the cathode of diode D19 and the 11st power switch tube S 11, the anode and the 11st of the 19th diode D19
The source electrode of power switch tube S 11 connects.
Further, the ac filter output module 4 include output inductor Lf, output filter capacitor Cf with exchange
Load ZL；
One end of the output inductor Lf while the drain electrode with the tenth power switch tube S 10, the 17th diode D17
Cathode, the 18th diode D18 cathode connect with the common end of the drain electrode of the 12nd power switch tube S 12, output filtering
The other end of inductance Lf is connect with one end of output filter capacitor Cf, the other end of output filter capacitor Cf and the first vice-side winding
The non-same polarity of N5 connects, AC load ZLOne end of one end and output filter capacitor Cf, output inductor Lf it is public
End connection, AC load ZLThe other end connect with the other end of output filter capacitor Cf.
Diode clamp of the present invention and the basic functional principle for cascading hybrid five-electrical level inverter are as follows：This inverter pair
Output voltage electric current is sampled, by error amplification signal compared with standard sine voltage, using SPWM control modes.Each grade
Receipts or other documents in duplicate member gets a half voltage of independent DC power supply, i.e.+Ui1/2 ,+Ui2/2=+Ui/4, by cascade mode, using spy
Fixed diode controls current direction, to obtain four kinds of level of+Ui ,+3Ui/4 ,+2Ui/4 ,+Ui/4, then passes through six windings
Transformer, change polarity of voltage so that four kinds of voltages be adjusted to five level voltage+Ui of positive-negative polarity ,+3Ui/4 ,+2Ui/4 ,+
Rear class filtering inductance capacitor filtering is passed through in Ui/4,0,-Ui/4, -2Ui/4, -3Ui/4,-Ui, the five-level high-frequency pulse, you can
Obtain power frequency sinusoidal voltage in load end, transformer secondary by switch the working condition of switch and transformer secondary winding to
Change energy flow direction.
Claims (5)
1. a kind of diode clamp and the hybrid five-electrical level inverter of cascade, which is characterized in that only including input connected in sequence
Vertical DC diode clamping unit (1), high frequency transformer (2), afterflow backfeed loop (3), ac filter output (4), wherein：
Input independent direct current diode clamp bit location (1) is for generating independent level state；
High frequency transformer (2) is transmitted for electric energy, works in normal shock state；
Afterflow backfeed loop (3) is returned for providing secondary side energy continuous current circuit and providing energy back to perception and capacitive load
Road；
Ac filter exports (4) and is exported for realizing smooth AC wave shape.
2. diode clamp according to claim 1 and the hybrid five-electrical level inverter of cascade, which is characterized in that described defeated
Enter independent direct current diode clamp bit location (1) include the first DC power supply (Ui1), the second DC power supply (Ui2), the first primary side around
Group (N1), the second primary side winding (N2), the first power switch tube (S1), the second power switch tube (S2), third power switch tube
(S3), the 4th power switch tube (S4), the 5th power switch tube (S5), the 6th power switch tube (S6), the 7th power switch tube
(S7), the 8th power switch tube (S8), the first diode (D1), the second diode (D2), third diode (D3), the four or two pole
Manage (D4), the 5th diode (D5), the 6th diode (D6), the 7th diode (D7), the 8th diode (D8), the 9th diode
(D9), the tenth diode (D10), the 11st diode (D11), the 12nd diode (D12), the 13rd diode (D13),
14 diodes (D14), the 15th diode (D15), the 16th diode (D16), the first capacitance (C1), the second capacitance
(C2), third capacitance (C3), the 4th capacitance (C4)；
The anode of first DC power supply (Ui1) is connect with the different name end of the first primary side winding (N1), the first primary side winding
(N1) Same Name of Ends is connect with the anode of the first diode (D1), the cathode and the first DC power supply of the first diode (D1)
(Ui1) cathode connection, the anode of the first capacitance (C1), the drain electrode of the first power switch tube (S1), the second power switch tube
(S2) drain electrode is connected with the anode of the first DC power supply (Ui1), and (D2) inverse parallel of the second diode is in the first power switch
Manage the both ends (S1), i.e. the cathode of the second diode (D2) connect with the drain electrode of the first power switch tube (S1), the second diode
(D2) anode is connect with the source electrode of the first power switch tube (S1), and (D3) inverse parallel of third diode is in the second power switch tube
(S2) both ends, the i.e. cathode of third diode (D3) connect with the drain electrode of the second power switch tube (S2), third diode (D3)
Anode connect with the source electrode of the second power switch tube (S2), the anode of the cathode of the first capacitance (C1) and the second capacitance (C2) is even
Connect, the cathode of the second capacitance (C2), the source electrode of third power switch tube (S3), the 4th power switch tube (S4) source electrode and first
The cathode of DC power supply (Ui1) is connected, and the 6th diode (D6) inverse parallel is in the both ends third power switch tube (S3), i.e., and the 6th
The cathode of diode (D6) connect with the drain electrode of third power switch tube (S3), the anode and third power of the 6th diode (D6)
The source electrode of switching tube (S3) connects, and the 7th diode (D7) inverse parallel is in the 4th both ends power switch tube (S4), i.e. the seven or two pole
Pipe (D7) cathode connect with the drain electrode of the 4th power switch tube (S4), the anode and the 4th power switch of the 7th diode (D7)
The source electrode connection of (S4) is managed, the anode of the second DC power supply (Ui2) is connect with the different name end of the second primary side winding (N2), and second is former
The Same Name of Ends of side winding (N2) is connect with the anode of the 8th diode (D8), the cathode and the second direct current of the 8th diode (D8)
The cathode in source (Ui2) connects, the anode of third capacitance (C3), the drain electrode of the 5th power switch tube (S5), the 6th power switch tube
(S6) drain electrode is connected with the anode of the second DC power supply (Ui2), and the 9th diode (D9) inverse parallel is in the 5th power switch
Manage the both ends (S5), i.e. the cathode of the 9th diode (D9) connect with the drain electrode of the 5th power switch tube (S5), the 9th diode
(D9) anode is connect with the source electrode of the 5th power switch tube (S5), and the tenth diode (D10) inverse parallel is in the 6th power switch
Manage the both ends (S6), i.e. the cathode of the tenth diode (D10) connect with the drain electrode of the 6th power switch tube (S6), the tenth diode
(D10) anode is connect with the source electrode of the 6th power switch tube (S6), the cathode of third capacitance (C3) and the 4th capacitance (C4)
Anode connection, the cathode of the 4th capacitance (C4), the source electrode of the 7th power switch tube (S7), the 8th power switch tube (S8) source electrode
It is connected with the cathode of the second DC power supply (Ui2), the 14th diode (D14) inverse parallel is in the 7th power switch tube (S7) two
End, i.e. the cathode of the 14th diode (D14) connect with the drain electrode of the 7th power switch tube (S7), the 14th diode (D14)
Anode connect with the source electrode of the 7th power switch tube (S7), the 15th diode (D15) inverse parallel is in the 8th power switch tube
(S8) both ends, i.e. the cathode of the 15th diode (D15) connect with the drain electrode of the 8th power switch tube (S8), the 15th diode
(D15) anode is connect with the source electrode of the 8th power switch tube (S8), the anode and the first capacitance (C1) of the 4th diode (D4)
Cathode connection, the cathode of the 4th diode (D4), the cathode of the 12nd diode (D12), the 4th primary side winding (N4) it is same
Name end is connect with the source electrode of the first power switch tube (S1), and the cathode of the 5th diode (D5) and the cathode of the first capacitance (C1) connect
It connects, the anode of the 5th diode (D5), the anode of the 16th diode (D16), the Same Name of Ends of third primary side winding (N3) and
The drain electrode of four power switch tubes (S4) connects, and the anode of the 11st pole pipe (D11) is connect with the cathode of third capacitance (C3), and the tenth
The cathode of one diode (D11), the 12nd diode (D12) anode connect with the source electrode of the 5th power switch tube (S5),
The cathode of ten triodes (D13) is connect with the cathode of third capacitance (C3), the anode and the 8th power of the 13rd diode (D13)
The drain electrode of switching tube (S8) connects, the cathode of the tenth hexode (D16), the Same Name of Ends and the second power of third primary side winding (N3)
The source electrode of switching tube (S2) connects.
3. diode clamp according to claim 2 and the hybrid five-electrical level inverter of cascade, which is characterized in that the height
Frequency power transformer (2) include third primary side winding (N3), the 4th primary side winding (N4), the first vice-side winding (N5), the second secondary side around
Group (N6)；
The Same Name of Ends of the third primary side winding (N3), the cathode of the tenth hexode (D16) and the second power switch tube (S2)
Source electrode connect, the non-same polarity of third primary side winding (N3), the 13rd diode (D13) anode and the 8th power switch tube
(S8) drain electrode connection, the Same Name of Ends connection of the non-same polarity and the second vice-side winding (N6) of the first vice-side winding (N5).
4. diode clamp according to claim 3 and the hybrid five-electrical level inverter of cascade, which is characterized in that described continuous
Flow backfeed loop (3) include the 9th power switch tube (S9), the 17th diode (D17), the tenth power switch tube (S10),
18th diode (D18), the 11st power switch tube (S11), the 19th diode (D19), the 12nd power switch tube
(S12), the 20th diode (D20)；
The drain electrode of 9th power switch tube (S9) is connect with the Same Name of Ends of the first vice-side winding (N5), the 9th power switch tube
(S9) source electrode is connect with the anode of the 17th diode (D17), cathode, the tenth power switch of the 17th diode (D17)
Pipe (S10) drain electrode connect with the drain electrode of the 12nd power switch tube (S12), the source electrode of the 12nd power switch tube (S12) and
The anode of 20th diode (D20) connects, and the cathode of the 20th diode (D20) is non-of the same name with the second vice-side winding (N6)
End connection, the source electrode of the tenth power switch tube (S10) are connect with the drain electrode of the 11st power switch tube (S11), the 18th pole
(D18) inverse parallel is managed in the tenth both ends power switch tube (S10), i.e. the cathode of the 18th diode (D18) is opened with the tenth power
The anode of the drain electrode connection, the 18th diode (D18) of closing pipe (S10) is connect with the source electrode of the tenth power switch tube (S10), the
The source electrode of 11 power switch tubes (S11) is connect with the non-same polarity of the first vice-side winding (N5), and the 19th diode (D19) is anti-
It is parallel to the 11st both ends power switch tube (S11), the i.e. cathode and the 11st power switch tube of the 19th diode (D19)
(S11) anode of drain electrode connection, the 19th diode (D19) is connect with the source electrode of the 11st power switch tube (S11).
5. diode clamp according to claim 4 and the hybrid five-electrical level inverter of cascade, which is characterized in that the friendship
Stream filtering output module (4) includes output inductor (Lf), output filter capacitor (Cf) and AC load (ZL)；
One end of the output inductor (Lf) while the drain electrode with the tenth power switch tube (S10), the 17th diode
(D17) cathode of cathode, the 18th diode (D18) is connect with the common end of the drain electrode of the 12nd power switch tube (S12),
The other end of output inductor (Lf) is connect with one end of output filter capacitor (Cf), the other end of output filter capacitor (Cf)
It is connect with the non-same polarity of the first vice-side winding (N5), AC load (ZL) one end and output filter capacitor (Cf) one end,
The common end of output inductor (Lf) connects, AC load (ZL) the other end of the other end and output filter capacitor (Cf) connect
It connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810384955.XA CN108521234A (en) | 2018-04-26 | 2018-04-26 | A kind of diode clamp with cascade hybrid five-electrical level inverter |
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| CN201810384955.XA CN108521234A (en) | 2018-04-26 | 2018-04-26 | A kind of diode clamp with cascade hybrid five-electrical level inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110691445A (en) * | 2019-09-05 | 2020-01-14 | 西安电子科技大学 | Multi-path high-power LED drive circuit |
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