CN206023611U - High frequency isolation type five-electrical level inverter - Google Patents
High frequency isolation type five-electrical level inverter Download PDFInfo
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- CN206023611U CN206023611U CN201620567319.7U CN201620567319U CN206023611U CN 206023611 U CN206023611 U CN 206023611U CN 201620567319 U CN201620567319 U CN 201620567319U CN 206023611 U CN206023611 U CN 206023611U
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Abstract
The utility model discloses a kind of high frequency isolation type five-electrical level inverter, is made up of the five level translation unit of input DC power, derided capacitors, high frequency isolation type, output frequency converter, output filter and the output AC load that are sequentially connected；The converter is on the basis of full-bridge inverter, by in two capacitance partial pressures of input dc power potential source two ends parallel connection, enable transformer front end produce Udc, Udc/2,0, five level of Udc/2, Udc, five level can also be induced simultaneously in transformation secondary, reduce switch tube voltage stress, while improving output voltage waveforms quality.The utility model has the advantages that two stage power conversion (direct current DC high-frequency ac HFAC low-frequency ac LFAC), there is bidirectional power flow, low switching device voltage stress, good output filter front voltage spectral characteristic, output filter small volume, can realize AC load and dc source high frequency electrical isolation.The inverter switching device tube voltage stress is low, can be applicable to higher voltage, powerful application scenario.
Description
Technical field
The utility model belongs to Technics of Power Electronic Conversion technical field, particularly a kind of high frequency isolation type five-electrical level inverter.
Background technology
Directly-hand over (DC-AC) converter technique to refer to application power semiconductor, direct current energy is converted into constant voltage constant frequency
A kind of Semiconductor Converting Technology of AC energy, abbreviation inversion transformation technique, its are widely used in national defence, industrial and mining enterprises, scientific research institutions, university
In laboratory and daily life.With the development and application of new energy technology, application of the inversion transformation technique in new forms of energy is also more next
More.
So far, domestic and international power electronics researcher is concentrated mainly on non-electrical for the research of straight-AC-AC converter
Two level such as gas is isolated, low frequency and high frequency electrical isolation formula are straight-AC-AC converter；For the research of multi-level converter, mainly
Concentrate on many level straight-straight, hand over-hand over and friendship-DC converter, and for many level straight-research of AC-AC converter is then considerably less,
And be limited only to non-isolated, low frequency or the isolated many level of intermediate frequency straight-AC-AC converter, to many level two of high frequency isolation type
The inverter research of level power conversion is fewer.
In traditional inverter, wide variety of earliest is two-level inverter, and the maximum shortcoming of this inverter is
Limited by switch tube power and voltage endurance capability, be not suitable for high-power occasion.With power system DC power transmission reactive power
The need of the System Development such as compensation, Active Power Filter-APF and high-power frequency conversion and speed regulation of AC motor and generation of electricity by new energy
Will, multi-electrical level inverter starts to occur.Research of the development of device for high-power power electronic also for multi-level inverse conversion device is provided
Technical support.German scholars Holtz in 1977 propose the tri-level inversion for aiding in neutral point clamp using switching tube first
Device main circuit, A Nabae of Japan in 1980 et al. are developed to which, it is proposed that diode clamp formula multi-level inverse conversion electricity
Road.Through the development of decades, multi-level inverse conversion technology mainly has three class topological structures at present：(1) diode-clamped inversion
The cascaded inverter of device, (2) striding capacitance Clamp inverter, (3) with independent DC power supply direct current.Diode clamp
Type, capacitor-clamped type multi-electrical level inverter are applied to high input voltage high-power inverter occasion；There is independent DC power supply
Cascade multilevel inverter is then applied to low input, high output voltage high power contravariant occasion.But diode-clamped, electricity
Hold the flat inversion transformation technique of many level multiple spots of Clamp exist topological form single, without defects such as electrical isolations；There is independent direct current electricity
The cascading multiple electrical level inversion transformation technique in source has that circuit topology complexity input side power factor is low, conversion efficiency is low, power is close
Spend low defect.
Conventional inversion transformation technique adds one-level Industrial Frequency Transformer to adjust voltage ratio generally between inverter and output end
With as electrical isolation, but Industrial Frequency Transformer has that volume is big, can produce audio-frequency noise, dynamic response characteristic difference and output
Wave filter volume is big to wait shortcomings.Mr.ESPELAGE proposes the new ideas of High Frequency Link inversion transformation technique within 1977, using high frequency
Transformer replaces the Industrial Frequency Transformer in traditional low-frequency link inversion transformation technique, overcomes the shortcoming of low frequency inversion transformation technique, significantly carries
The high characteristic of inverter, will replace low frequency link inverter, and be used widely.With science and technology of aviation and aviation electronics
Fast development, aircraft secondary power supply must develop to high power density, high efficiency and modularization direction；Exploitation in new forms of energy
In utilization, it is adaptable to the solar array inverter in parallel with electrical network and fuel cell inverter and uninterrupted power source UPS's
Key technology inversion link etc. needs the occasion of inversion transformation technique, annulus inverter in high frequency to be all with a wide range of applications.
With the proposition of High Frequency Link inversion transformation technique new ideas, Chinese scholars have done substantial amounts of research work to which, and take
Obtained many valuable achievements in research." the unidirectional Buck types high frequency that nineteen ninety S.R.Narayana Prakask et al. is proposed
Annulus inverter ", by high frequency electrical isolation DC/DC converters and buck types inverter bridge cascade form, with unidirectional power stream,
Three-level power conversion (DC-HFAC-DC-LFAC), conversion efficiency be high, using power device switching loss during tradition PWM technology greatly,
The features such as high cost.I.Yamato et al. was proposed in 1988 " two-way Buck types annulus inverter in high frequency ", the inverter by
High frequency electrical isolation inverter is formed with the cascade of Buck types frequency converter, the frequency converter being made up of four-quadrant power switch
There is two or four power device to simultaneously turn in any turn-on cycle, conduction loss is larger, with bidirectional power flow, directly
The two-layer configuration of stream high frequency pulse AC low-frequency ac, the features such as efficiency is higher, conduction loss is big.But it is this " two-way
Buck type annulus inverter in high frequency " is two level of ± Ui in the voltage that filter inductance front end produces or is ± U, 0 three level, it is considered to
To the range of choice for expanding power device under high input voltage occasion, the voltage stress of power switch pipe is low, so this is solid
The defective application for constraining this " two-way Buck types annulus inverter in high frequency " in high input voltage high-power inverter occasion.
And many level topological structure great majority of the high-frequency isolation pattern studied at present concentrate on middle with DC link
Annulus inverter in high frequency.Simply multilevel converter is added in the DC/DC converters of high frequency electrical isolation.Simply reduce
The voltage stress of the DC/DC converter breaker in middle pipes of high frequency electrical isolation, and inreal real in output inductor front end
Now many level, do not reduce the voltage stress of converter bridge switching parts pipe, and output inductor capacitance is not all reduced.
Utility model content
The purpose of this utility model is that there is two stage power to convert (direct current DC- high-frequency ac HFAC- low frequencies to provide one kind
AC LF AC), bidirectional power flow, good output filter front voltage spectral characteristic, high power density, reduce switching device electricity
Compression, output filter small volume, the high frequency isolation type five that AC load and dc source high frequency electrical isolation can be realized
Electrical level inverter.
The technical solution for realizing the utility model purpose is：
A kind of high frequency isolation type five-electrical level inverter, by the input dc power source unit, derided capacitors, high frequency that are sequentially connected
Isolated five level translations unit, high-frequency isolation transformer, output frequency converter, output filter and output AC load
Composition.The positive pole of input DC power is connected with the positive pole of derided capacitors, and the negative pole of input DC power is negative with derided capacitors
Pole connects, and the positive pole of derided capacitors is connected with five level translation unit positive pole of high frequency isolation type, the negative pole and high frequency of input capacitance
The negative pole connection of isolated five level translations unit, the output end of five level translation unit of high frequency isolation type are become with high frequency isolation type
The armature winding connection of depressor, the secondary windings of high frequency isolation type transformer is connected with the input of output frequency converter, defeated
Go out the output end of frequency converter to be connected with the input of output filter, the output end of output filter with output AC load
It is connected.
Derided capacitors have the first input capacitance and the second input capacitance.The positive pole of the first input capacitance, the first power are opened
Close the drain electrode of pipe and the negative electrode of the first diode, the drain electrode of the 9th power switch pipe, the negative electrode of the 9th diode, the 3rd power are opened
Close the drain electrode of pipe, the negative electrode of the 3rd diode to be connected, the negative pole of the first input capacitance, the positive pole of the second input capacitance, the 5th work(
The drain electrode of rate switching tube is connected with the negative electrode of the 5th diode, the source electrode of the first power switch pipe, the anode of the first diode,
The source electrode of two power switch pipes, the anode of the second diode are connected, the source electrode of the 9th power switch pipe, the sun of the 9th diode
The anode of pole, the source electrode of the tenth power switch pipe and the tenth diode is connected, the source electrode of the 3rd power switch pipe, the 3rd diode
The anode of anode, the source electrode of the 4th power switch pipe and the 4th diode be connected, the source electrode of the 5th power switch pipe, the five or two
The anode of the anode of pole pipe, the source electrode of the 6th power switch pipe and the 6th diode is connected, the 6th power switch pipe drain electrode, the 6th
The negative electrode of diode, the drain electrode of the tenth power switch pipe, the negative electrode of the tenth diode, the drain electrode of the 8th power switch pipe, the 8th
The negative electrode of diode is connected, the negative pole of the second input capacitance, the drain electrode of the 7th power switch pipe, the negative electrode phase of the 7th diode
Even, the 7th power switch pipe source electrode, the anode of the 7th diode, the source electrode of the 8th power switch pipe, the anode of the 8th diode
It is connected, the negative pole of the positive pole of the first input capacitance and the second input capacitance is respectively the two ends of input DC power, the second power
The drain electrode of switching tube is respectively the two ends that the first output is exchanged, the leakage of the tenth power switch pipe with the drain electrode of the tenth power switch pipe
Pole is respectively the two ends that the second output is exchanged with the drain electrode of the first power switch pipe.
The utility model compared with prior art, its remarkable advantage：
(1) the construction thinking of many for Clamp level topology is applied in conventional push-pull inverter circuit.And in input direct-current
High-frequency isolation transformer is inserted in power supply and AC load, it is achieved that the electrical isolation of input side and load-side, while realizing becoming
The miniaturization of parallel operation, lightweight, improve the efficiency of converter.
(2) compared with traditional two-level inverter, the converter can output filter front end obtain Udc, Udc/2,0 ,-
Five level of Udc/2 ,-Udc, reduce switch tube voltage stress and output filter volume, while improving output voltage ripple
Shape, is more suitable for high-tension high-power occasion.
(3) the utility model has power conversion series few (direct current DC- high-frequency ac HFAC- low-frequency ac LFAC), double
To power flow, high-frequency isolation transformer magnetic core is by two-way magnetization, the utilization rate of magnetic core of transformer in the output ac cycle
Height, the advantages of output filter front voltage spectral characteristic is good, thus improves conversion efficiency and power density, reduces volume and weight
Amount.
Description of the drawings
Fig. 1 is a kind of circuit topological structure figure of high frequency isolation type five-electrical level inverter of the utility model.
Fig. 2 is a kind of circuit topological structure figure of high-frequency isolation full wave type five-electrical level inverter of the utility model.
Fig. 3 is a kind of circuit topological structure figure of high-frequency isolation full-bridge type five-electrical level inverter of the utility model.
Specific embodiment
In conjunction with Fig. 1～Fig. 3：A kind of high frequency isolation type five-electrical level inverter of the utility model is straight by the input being sequentially connected
Stream power subsystem 1, derided capacitors 2, five level translation unit 3 of high frequency isolation type, high-frequency isolation transformer 4, all wave conversions of output
Device 5, output filter 6 and output AC load 7 are constituted.
Input dc power source unit 1 includes input DC power Udc, input dc power source unit 1 and derided capacitors one end
Connection, the derided capacitors other end are connected with five level translation unit one end of high frequency isolation type, five level translation list of high frequency isolation type
First other end is connected with 4 one end of high-frequency isolation transformer, and 4 other end of high-frequency isolation transformer is connected with output frequency converter one end
Connect, the output frequency converter other end is connected with output filter one end, the output filter other end is connected with output AC load
Connect.
The derided capacitors 2 include the first derided capacitors C1, the second derided capacitors C2；The positive pole of the first derided capacitors C1 with
The positive pole connection of input dc power source unit 1, the negative pole of the first derided capacitors C1 are connected with the positive pole of the second derided capacitors C2, the
The negative pole of two derided capacitors C2 is connected with the reference negative pole of input DC power Udc.
The positive pole of the first input capacitance C1, the negative electrode of the drain electrode of the first power switch tube S 1 and the first diode D1, the 9th
The drain electrode of power switch tube S 9, the negative electrode of the 9th diode D9, the drain electrode of the 3rd power switch tube S 3, the moon of the 3rd diode D3
Extremely it is connected, the negative pole of the first input capacitance C1, the positive pole of the second input capacitance C2, the drain electrode and the 5th of the 5th power switch tube S 5
The negative electrode of diode D5 is connected, the source electrode of the first power switch tube S 1, the anode of the first diode D1, the second power switch tube S 2
Source electrode, the second diode D2 anode be connected, the source electrode of the 9th power switch tube S 9, the anode of the 9th diode D9, the tenth
The anode of the source electrode of power switch tube S 10 and the tenth diode D10 is connected, the source electrode of the 3rd power switch tube S 3, the three or two pole
The anode of the anode of pipe D3, the source electrode of the 4th power switch tube S 4 and the 4th diode D4 is connected, the 5th power switch tube S 5
Source electrode, the anode of the anode, the source electrode of the 6th power switch tube S 6 and the 6th diode D6 of the 5th diode D5 are connected, the 6th work(
The drain electrode of rate switching tube S6, the negative electrode of the 6th diode D6, the drain electrode of the tenth power switch tube S 10, the moon of the tenth diode D10
Pole, the drain electrode of the 8th power switch tube S 8, the negative electrode of the 8th diode D8 are connected, the negative pole of the second input capacitance C2, the 7th work(
The drain electrode of rate switching tube S7, the negative electrode of the 7th diode D7 are connected, the source electrode of the 7th power switch tube S 7, the 7th diode D7
Anode, the source electrode of the 8th power switch tube S 8, the anode of the 8th diode D8 are connected, the positive pole of the first input capacitance C1 and second
The negative pole of input capacitance C2 is respectively the two ends of input DC power, the drain electrode of the second power switch tube S 2 and the tenth power switch
The drain electrode of pipe S10 is respectively the two ends of the first output exchange N1, the drain electrode of the tenth power switch tube S 10 and the first power switch pipe
The drain electrode of S1 is respectively the two ends of the second output exchange N2.
Described output frequency converter is full-bridge type frequency converter 5, the first secondary of high frequency isolation type transformer 4 around
The Same Name of Ends of group N3 and drain electrode, the 11st diode of the 11st power switch tube S 11 of the full-bridge type frequency converter 5
The negative electrode of D11, the drain electrode of the 13rd power switch tube S 13, the negative electrode of the 13rd diode D13 connect together, the full-bridge type
The source electrode of the 11st power switch tube S 11 of frequency converter 5, the anode of the 11st diode D11, the 12nd power switch pipe
The source electrode of S12, the anode of the 12nd diode D12 connect together, the 12nd power switch of the full-bridge type frequency converter 5
The drain electrode of pipe S12, the 12nd diode D12 negative electrodes, the drain electrode of the 15th power S15 switching tubes, the moon of the 15th diode D15
Pole connects together, the source electrode of the 15th power switch tube S 15 of the full-bridge type frequency converter 5, the 15th diode D15
Anode, the source electrode of the 16th power switch tube S 16, the anode of the 16th diode D16 connect together, high frequency isolation type transformer
The non-same polarity of 4 the first vice-side winding N2 and the leakage of the 16th power switch tube S 16 of the full-bridge type frequency converter 5
Pole, the negative electrode of the 16th diode D16, the drain electrode of the 18th power switch tube S 18, the negative electrode of the 18th diode D18 are connected in
Together, the source electrode of the 18th power switch tube S 18 of the full-bridge type frequency converter 5, the anode of the 18th diode D18,
The source electrode of the 17th power switch tube S 17, the anode of the 17th diode D17 connect together, the full-bridge type frequency converter 5
The drain electrode of the 17th power switch tube S 17, the negative electrode of the 17th diode D17, the drain electrode of the 14th power switch tube S 14,
The negative electrode of the 14th diode D14 connects together, the source electrode of the 14th power switch tube S 14 of full-bridge type frequency converter,
The anode of the 14th diode D14, the source electrode of the 13rd power switch tube S 13, the anode of the 13rd diode D13 are connected in one
Rise, the 11st power switch tube S 11, the 12nd power switch tube S 12 and the 11st diode D11, the tenth tetrode D14 are constituted
First four-quadrant power switch tube S A, the 13rd power switch tube S 13, the 14th power switch tube S 14 and the 13rd diode
D13, the 14th diode D14 constitute the second four-quadrant power switch tube S B, the 15th power switch tube S 15, the 16th power
Switching tube S16 and the 15th diode D15, the 16th diode D16 constitute the 3rd four-quadrant power switch tube S C, the 17th work(
Rate switching tube S17, the 18th power switch tube S 18 and the 17th diode D17, the 18th diode D18 constitute the 4th four-quadrant
Limit power switch tube S D, four four-quadrant power switch pipes constitute the full-bridge type frequency converter 4.
Described output frequency converter is full wave type frequency converter 8, the second secondary of high frequency isolation type transformer 4 around
The Same Name of Ends of group N3 ' and drain electrode and the 19th pole of the 19th power switch tube S 11 ' of the full wave type frequency converter 8
The negative electrode of pipe D11 ' connects together, the source electrode of the 19th power switch tube S 11 ' of the full wave type frequency converter 8, the 19th
The anode of diode D11 ', the source electrode of the 20th power switch tube S 12 ', the anode of the 20th diode D12 ' connect together, high
Frequently the 3rd vice-side winding N4 of the non-same polarity of the second vice-side winding N3 ' of isolated transformer 4 and high frequency isolation type transformer 4
Same Name of Ends connection, the non-same polarity of the 3rd vice-side winding N4 of high frequency isolation type transformer 4 and the full wave type week wave conversion
The drain electrode of the 21st power switch tube S 13 ' of device 8, the negative electrode connection of the 21st diode D13 ', the full wave type cycle
The source electrode of the 21st power switch tube S 13 ' of converter 8, the anode of the 21st diode D13 ', the 22nd power switch
The source electrode of pipe S14 ', the anode of the 22nd diode D14 ' connect together, the 22nd work(of full wave type frequency converter 8
The drain electrode of rate switching tube S14 ', the negative electrode of the 22nd diode D14 ', the drain electrode of the 20th power switch tube S 12 ', the 20th
The negative electrode of diode D12 ' connects together, the 19th power switch tube S 11 ', the 20th power switch tube S 12 ' and the 19th
Pole pipe D11 ', the 20th diode D12 ' constitute the 5th four-quadrant power switch pipe, the 21st power switch tube S 13 ', second
12 power switch tube Ss 14 ' and the 21st diode D13 ', the 22nd diode D14 ' constitute the 6th four-quadrant power and open
Guan Guan, the 5th four-quadrant power switch pipe and the 6th four-quadrant power switch pipe constitute the full wave type frequency converter 8.
Embodiment 1：In conjunction with Fig. 2, a kind of high frequency isolation type five-electrical level inverter be applied to high frequency electrical isolation high voltage,
The positive pole company of the circuit topology of high power contravariant occasion, i.e. input DC power Udc is connected with the positive pole of the first input capacitance C1,
The positive pole of the first input capacitance C1, the negative electrode of the drain electrode of the first power switch tube S 1 and the first diode D1, the 9th power switch
The drain electrode of pipe S9, the negative electrode of the 9th diode D9, the drain electrode of the 3rd power switch tube S 3, the negative electrode of the 3rd diode D3 are connected,
The negative pole of the first input capacitance C1, the positive pole of the second input capacitance C2, the drain electrode of the 5th power switch tube S 5 and the 5th diode
The negative electrode of D5 is connected, the source electrode of the first power switch tube S 1, the anode of the first diode D1, the source of the second power switch tube S 2
Pole, the anode of the second diode D2 are connected, the drain electrode of the second power switch tube S 2, the negative electrode of the second diode D2 and high-frequency isolation
The Same Name of Ends of the first primary side winding N1 of transformer 4 is connected, the drain electrode of the 9th power switch tube S 9, the moon of the 9th diode D9
Pole, the drain electrode of the tenth power switch tube S 10 are connected with the negative electrode of the tenth diode D10, the drain electrode of the 5th power switch tube S 5,
The negative electrode of five diode D5, the drain electrode of the 6th power switch tube S 6 are connected with the negative electrode of the 6th diode D6, the 6th power switch
The drain electrode of pipe S6, the negative electrode of the 6th diode D6, the drain electrode of the tenth power switch tube S 10, the negative electrode of the tenth diode D10,
First primary side winding N1 of the drain electrode, the negative electrode of the 8th diode D8 and high-frequency isolation transformer 4 of eight power switch tube Ss 8 non-
Same Name of Ends is connected with the Same Name of Ends of the second primary side winding N2 of high-frequency isolation transformer 4, the negative pole of the second input capacitance C2,
The drain electrode of the 7th power switch tube S 7, the negative electrode of the 7th diode D7 are connected, the source electrode of the 7th power switch tube S 7, the seven or two
The anode of pole pipe D7, the source electrode of the 8th power switch tube S 8, the anode of the 8th diode D8 are connected, the 3rd power switch tube S 3
Source electrode, the anode of the anode, the source electrode of the 4th power switch tube S 4 and the 4th diode D4 of the 3rd diode D3 are connected, the 4th work(
The drain electrode of rate switching tube S4, the negative electrode of the 4th diode D4 are non-same with the second primary side winding N2 of high-frequency isolation transformer 4
Name end is connected.The Same Name of Ends of the first vice-side winding N3 of high frequency isolation type transformer 4 and the full-bridge type frequency converter 5
The drain electrode of the 11st power switch tube S 11, the negative electrode of the 11st diode D11, the drain electrode of the 13rd power switch tube S 13,
The negative electrode of 13 diode D13 connects together, the source electrode of the 11st power switch tube S 11 of the full-bridge type frequency converter 5,
The anode of 11 diode D11, the source electrode of the 12nd power switch tube S 12, the anode of the 12nd diode D12 connect together,
The drain electrode of the 12nd power switch tube S 12 of the full-bridge type frequency converter 5, the 12nd diode D12 negative electrodes, the 15th work(
The drain electrode of rate S15 switching tube, the negative electrode of the 15th diode D15 connect together, and the 15th of the full-bridge type frequency converter 5 the
The source electrode of power switch tube S 15, the anode of the 15th diode D15, the source electrode of the 16th power switch tube S 16, the 16th
The anode of pole pipe D16 connects together, the non-same polarity and the full-bridge type of the first vice-side winding N2 of high frequency isolation type transformer 4
The drain electrode of the 16th power switch tube S 16 of frequency converter 5, the negative electrode of the 16th diode D16, the 18th power switch pipe
The drain electrode of S18, the negative electrode of the 18th diode D18 connect together, the 18th power switch of the full-bridge type frequency converter 5
The source electrode of pipe S18, the anode of the 18th diode D18, the source electrode of the 17th power switch tube S 17, the 17th diode D17
Anode connects together, the drain electrode of the 17th power switch tube S 17 of the full-bridge type frequency converter 5, the 17th diode D17
Negative electrode, the drain electrode of the 14th power switch tube S 14, the negative electrode of the 14th diode D14 connect together, the full-bridge type cycle
The source electrode of the 14th power switch tube S 14 of converter, the anode of the 14th diode D14, the source of the 13rd power switch tube S 13
Pole, the anode of the 13rd diode D13 connect together, and the drain electrode of the 12nd power switch S12 is connected in output inductor Lf's
Front end, the rear end of filter inductance Lf are connected in the positive pole of filter capacitor, the drain electrode of the 17th power switch tube S 17 and filter capacitor Cf
Negative pole be connected be followed by " ", filter capacitor Cf two termination AC loads ZL.
Embodiment 2：In conjunction with Fig. 3, a kind of high frequency isolation type five-electrical level inverter be applied to high frequency electrical isolation high voltage,
The positive pole of the circuit topology of high power contravariant occasion, i.e. input DC power Udc positive pole phase even with the first input capacitance C1
Even, the positive pole of the first input capacitance C1, the negative electrode of the drain electrode of the first power switch tube S 1 and the first diode D1, the 9th power are opened
The drain electrode of pass pipe S9, the negative electrode of the 9th diode D9, the drain electrode of the 3rd power switch tube S 3, the negative electrode phase of the 3rd diode D3
Even, the negative pole of the first input capacitance C1, the positive pole of the second input capacitance C2, the drain electrode of the 5th power switch tube S 5 and the five or two pole
The negative electrode of pipe D5 is connected, the source electrode of the first power switch tube S 1, the anode of the first diode D1, the source of the second power switch tube S 2
Pole, the anode of the second diode D2 are connected, the drain electrode of the second power switch tube S 2, the negative electrode of the second diode D2 and high-frequency isolation
The Same Name of Ends of the first primary side winding N1 of transformer 4 is connected, the drain electrode of the 9th power switch tube S 9, the 9th diode D9
Negative electrode, the drain electrode of the tenth power switch tube S 10 are connected with the negative electrode of the tenth diode D10, the drain electrode of the 5th power switch tube S 5,
The negative electrode of the 5th diode D5, the drain electrode of the 6th power switch tube S 6 are connected with the negative electrode of the 6th diode D6, and the 6th power is opened
Close the drain electrode of pipe S6, the negative electrode of the 6th diode D6, the drain electrode of the tenth power switch tube S 10, the negative electrode of the tenth diode D10,
First primary side winding N1 of the drain electrode, the negative electrode of the 8th diode D8 and high-frequency isolation transformer 4 of the 8th power switch tube S 8
Non-same polarity is connected with the Same Name of Ends of the second primary side winding N2 of high-frequency isolation transformer 4, the second input capacitance C2 negative
Pole, the drain electrode of the 7th power switch tube S 7, the negative electrode of the 7th diode D7 are connected, the source electrode of the 7th power switch tube S 7, the 7th
The anode of diode D7, the source electrode of the 8th power switch tube S 8, the anode of the 8th diode D8 are connected, the 3rd power switch tube S 3
Source electrode, the anode, the source electrode of the 4th power switch tube S 4 and the 4th diode D4 of the 3rd diode D3 anode be connected, the 4th
The drain electrode of power switch tube S 4, the negative electrode of the 4th diode D4 are non-with the second primary side winding N2 with high-frequency isolation transformer 4
Same Name of Ends is connected.The Same Name of Ends of the second vice-side winding N3 ' of high frequency isolation type transformer 4 and the full wave type frequency converter
8 drain electrode of the 19th power switch tube S 11 ' and the negative electrode of the 19th diode D11 ' connect together, the full wave type cycle
The source electrode of the 19th power switch tube S 11 ' of converter 8, the anode of the 19th diode D11 ', the 20th power switch pipe
The source electrode of S12 ', the anode of the 20th diode D12 ' connect together, the second vice-side winding N3 ' of high frequency isolation type transformer 4
Non-same polarity be connected with the Same Name of Ends of the 3rd vice-side winding N4 of high frequency isolation type transformer 4, high frequency isolation type transformer 4
The leakage of the non-same polarity of the 3rd vice-side winding N4 and the 21st power switch tube S 13 ' of the full wave type frequency converter 8
Pole, the negative electrode connection of the 21st diode D13 ', the 21st power switch tube S 13 ' of full wave type frequency converter 8
Source electrode, the anode of the 21st diode D13 ', the source electrode of the 22nd power switch tube S 14 ', the 22nd diode D14 '
Anode connect together, the drain electrode of the 22nd power switch tube S 14 ' of full wave type frequency converter 8, the 22nd pole
The negative electrode of pipe D14 ', the drain electrode of the 20th power switch tube S 12 ', the negative electrode of the 20th diode D12 ' are connected in output filtered electrical
The front end of sense Lf, the rear end of filter inductance Lf is connected in the positive pole of filter capacitor, the second vice-side winding of high frequency isolation type transformer 4
The non-same polarity of N3 ', the Same Name of Ends of the 3rd vice-side winding N4 of high frequency isolation type transformer 4 are connected with the negative pole of filter capacitor Cf
Be followed by " ", two termination AC loads ZL of filter capacitor Cf.
A kind of basic functional principle of high frequency isolation type five-electrical level inverter of the utility model is as follows：Input voltage is through direct current
Udc/2 level is obtained after two derided capacitors partial pressure of side, and input supply voltage is modulated through five level translation unit of high-frequency isolation
Into ambipolar high-frequency pulse voltage, after the isolation transmission of high frequency transformer, frequency converter is demodulated into low frequency arteries and veins
Voltage is rushed, then is stablized or adjustable sinusoidal voltage u through exporting after filtering carries out output filteringout.Inverter can be adopted
Control mode with active-clamp impulse modulation (SPWM) copped wave based on instantaneous voltage feedback control.Inverter is exported
Voltage uoutSampled voltage and sinusoid fiducial voltage urefRelatively, the error voltage is missed after proportional and integral controller
Difference amplifies signal ue, the error signal handed over to cut with saw-toothed carrier again and just can obtain SPWM signal waves, by gained SPWM signals and
Sinusoidal baseband signal ripple obtains the drive signal of each switching tube by a series of logical conversion.
As inverter has four-quadrant operation ability, therefore can be with resistive, capacitive, perception and rectified load.?
In one output voltage cycle, inverter has four kinds of mode of operations, respectively corresponding four-quadrant work, under different loading conditions
The job order of inverter is also different.
It is applied to the full-bridge type topology of the high-voltage inverted occasion of high frequency electrical isolation with high frequency isolation type five-electrical level inverter
As a example by, the course of work of the high frequency isolation type five-electrical level inverter in an output voltage cycle is as follows：
1) generation of the first level+Udc, power switch tube S 1 is closed, S8 closures, power switch tube S 2 disconnects, S3 disconnects,
S4 disconnects, S5 disconnects, S6 disconnects, S7 disconnects, S9 disconnects, S10 disconnects.S11 conductings in first four-quadrant power switch tube S A,
S17 conductings in SD.Now there are 1 diode D2 high-frequency isolations of loop the first input capacitance C1 positive pole power switch tube S
8 diode D7 the second input capacitance C2 negative poles of the first primary side winding N1 of formula transformer power switch tube S.High frequency transformer
The energy of 4 secondary sensing is by the S11 bis- in vice-side winding N3 the first four-quadrant power switch tube Ss A of high frequency transformer 4
S17 diode D18 in the 4th four-quadrant power switch tube S D of 6 AC load ZL of pole pipe D12 wave filter are formed back
Road；Another kind of switch mode of the first level, power switch tube S 3 is closed, S8 closures, and S1 disconnects, S2 disconnects, S4 disconnects, S5 breaks
Open, S6 disconnects, S7 disconnects, S9 disconnects, S10 disconnects.Now there is loop the first input capacitance C1 positive pole power switch tube S 3
8 diode D7 second of diode D4 high frequency isolation types the second primary side winding N2 of transformer power switch tube S is input into electricity
Hold C2 negative poles.Vice-side winding N3 fourth four-quadrant power of the energy of 4 secondary of high frequency transformer sensing by high frequency transformer 4
In 6 AC load ZL the first four-quadrant power switch tube S A of S18 diode D17 wave filters in switching tube SD
S12 diodes D11 forms loop.
2) generation of second electrical level+Udc/2, power switch tube S 1 is closed, S6 closures, and power switch tube S 2 disconnects, S3 breaks
Open, S4 disconnects, S5 disconnects, S7 disconnects, S8 disconnects, S9 disconnects, S10 disconnects.S11 in first four-quadrant power switch tube S A leads
Logical, in SD S17 conductings.Now have 1 diode D2 high frequencies of loop the first input capacitance C1 positive pole power switch tube S every
From 6 diode D5 the first input capacitance C1 negative poles of the first primary side winding N1 of formula transformer power switch tube S.High frequency transformation
The energy of 4 secondary of device sensing is by the S11 in vice-side winding N3 the first four-quadrant power switch tube Ss A of high frequency transformer 4
S17 diode D18 in the 4th four-quadrant power switch tube S D of 6 AC load ZL of diode D12 wave filters are formed
Loop；Another kind of switch mode of second electrical level, power switch tube S 3 is closed, S6 closures, and S1 disconnects, S2 disconnects, S4 disconnects, S5
Disconnect, S7 disconnects, S8 disconnects, S9 disconnects, S10 disconnects.Now there is loop the first input capacitance C1 positive pole power switch pipe
S3 diode D4 high frequency isolation types the second primary side winding N2 of transformer 8 diode D7 first of power switch tube S are defeated
Enter electric capacity C1 negative poles.Vice-side winding N3 threeth four-quadrant of the energy of 4 secondary of high frequency transformer sensing by high frequency transformer 4
In 6 AC load ZL the second four-quadrant power switch tube S A of S16 diode D15 wave filters in power switch tube S D
S14 diodes D13 formed loop.
3) generation of the 3rd level 0, power switch tube S 1 are closed, and S10 is closed, and power switch tube S 2 disconnects, S3 disconnects, S4
Disconnect, S5 disconnects, S6 disconnects, S7 disconnects, S8 disconnects, S9 disconnects.S11 conductings in first four-quadrant power switch tube S A, the
Four four-quadrant power switch tube Ss 17 are turned on.Now there is loop high frequency isolating transformer the first primary side winding N1 power switch pipe
1 diode D2 of S10 diode D9 power switch tube Ss.The energy of 4 secondary of high frequency transformer sensing passes through high frequency transformer
6 AC load of S11 diode D12 wave filters in 4 vice-side winding N3 the first four-quadrant power switch tube Ss A
S17 diodes D18 in the 4th four-quadrant power switch tube Ss D of ZL forms loop；Another kind of switching molding of the 3rd level
State, power switch tube S 3 are closed, and S10 is closed.Power switch tube S 1 disconnects, S2 disconnects, S4 disconnects, S5 disconnects, S6 disconnects, S74
Disconnect, S8 disconnects, S9 disconnects.Now there is the second primary side winding N2 of loop high frequency isolating transformer power switch tube S 10 2
3 diode D4 of pole pipe D9 power switch tube S.Secondary of the energy of 4 secondary of high frequency transformer sensing by high frequency transformer 4
6 AC load ZL the one or four of S18 diode D17 wave filters in the 4th four-quadrant power switch tube Ss D of winding N3
S12 diodes D11 in quadrant power switch tube S A forms loop.
4) generation of the 4th level-Udc/2, power switch tube S 1 is closed, S6 closures, and power switch tube S 2 disconnects, S3 breaks
Open, S4 disconnects, S5 disconnects, S7 disconnects, S8 disconnects, S9 disconnects, S10 disconnects.S13 in second four-quadrant power switch tube S B leads
Logical, in the 3rd four-quadrant power switch tube S C S15 conductings.Now there is loop the first input capacitance C1 positive pole power switch pipe
S1 diode D2 high frequency isolation types the first primary side winding N1 of transformer 6 diode D5 first of power switch tube S are defeated
Enter electric capacity C1 negative poles.Vice-side winding N3 second four-quadrant of the energy of 4 secondary of high frequency transformer sensing by high frequency transformer 4
In the 3rd four-quadrant power switch tube S C of 6 AC load ZL of S13 diode D14 wave filters in power switch tube S B
S16 diodes D15 formed loop；Another kind of switch mode of the 4th level, power switch tube S 3 is closed, S6 closures, S1
Disconnect, S2 disconnects, S4 disconnects, S5 disconnects, S7 disconnects, S8 disconnects, S9 disconnects, S10 disconnects.Now there is the first input capacitance of loop
3 diode D4 high frequency isolation types transformer the second primary side winding N2 power switch pipe of C1 positive poles power switch tube S
S8 diodes D7 the first input capacitance C1 negative poles.Pair of the energy of 4 secondary of high frequency transformer sensing by high frequency transformer 4
6 AC load ZL first of S18 diode D17 wave filters in the 4th four-quadrant power switch tube Ss D of side winding N3
S12 diodes D11 in four-quadrant power switch tube S A forms loop.
5) generation of the 5th level-Udc, power switch tube S 1 is closed, S8 closures, power switch tube S 2 disconnects, S3 disconnects,
S4 disconnects, S5 disconnects, S6 disconnects, S7 disconnects, S9 disconnects, S10 disconnects.S11 conductings in first four-quadrant power switch tube S A,
S17 conductings in SD.Now there are 1 diode D2 high-frequency isolations of loop the first input capacitance C1 positive pole power switch tube S
8 diode D7 the second input capacitance C2 negative poles of the first primary side winding N1 of formula transformer power switch tube S.High frequency transformer
The energy of 4 secondary sensing is by the S18 bis- in the 4th four-quadrant power switch tube Ss D of vice-side winding N3 of high frequency transformer 4
S12 diode D11 in 6 AC load ZL the first four-quadrant power switch tube S A of pole pipe D17 wave filter are formed back
Road；Another kind of switch mode of the first level, power switch tube S 3 is closed, S8 closures, and S1 disconnects, S2 disconnects, S4 disconnects, S5 breaks
Open, S6 disconnects, S7 disconnects, S9 disconnects, S10 disconnects.Now there is loop the first input capacitance C1 positive pole power switch tube S 3
8 diode D7 second of diode D4 high frequency isolation types the second primary side winding N2 of transformer power switch tube S is input into electricity
Hold C2 negative poles.Vice-side winding N3 first four-quadrant power of the energy of 4 secondary of high frequency transformer sensing by high frequency transformer 4
In the 4th four-quadrant power switch tube S D of 6 AC load ZL of S11 diode D12 wave filters in switching tube SA
S17 diodes D18 forms loop.
Output AC voltage positive half period, obtains first, second, and third kind of level in output filter front end, in output
Alternating voltage negative half-cycle, obtains the three, the 4th and the 5th kind of level in output filter front end.Friendship containing this five kinds of level
The reasonable ac output voltage of spectral characteristic can be obtained after the electric device after filtering of stream.
Claims (3)
1. a kind of high frequency isolation type five-electrical level inverter, it is characterised in that：By the input dc power source unit (1) being sequentially connected,
Derided capacitors (2), five level translation unit (3) of high frequency isolation type, high-frequency isolation transformer (4), output frequency converter (5),
Output filter (6) and output AC load (7) composition；Input dc power source unit (1) includes input DC power (Udc),
Input dc power source unit (1) is connected with derided capacitors one end, the derided capacitors other end and five level translation list of high frequency isolation type
First one end connection, the five level translation unit other end of high frequency isolation type are connected with high-frequency isolation transformer (4) one end, high-frequency isolation
Transformer (4) other end is connected with output frequency converter one end, exports the frequency converter other end and output filter one end
Connection, the output filter other end are connected with output AC load, wherein：
Described derided capacitors (2) include the first derided capacitors (C1), the second derided capacitors (C2)；First derided capacitors (C1) are just
Pole is connected with the positive pole of input dc power source unit (1), the negative pole of the first derided capacitors (C1) and the second derided capacitors (C2)
Positive pole connects, and the negative pole of the second derided capacitors (C2) is connected with the reference negative pole of input DC power (Udc)；
Five level translation unit (3) of the high frequency isolation type include the first power switch pipe (S1), the first diode (D1), second
Power switch pipe (S2), the second diode (D2), the 3rd power switch pipe (S3), the 3rd diode (D3), the 4th power switch
Pipe (S4), the 4th diode (D4), the 5th power switch pipe (S5), the 5th diode (D5), the 6th power switch pipe (S6), the
Six diodes (D6), the 7th power switch pipe (S7), the 7th diode (D7), the 8th power switch pipe (S8), the 8th diode
(D8)；9th power switch pipe (S9), the 9th diode (D9), the tenth power switch pipe (S10), the tenth diode (D10)；The
The drain electrode of one power switch pipe (S1) is connected with the positive pole of the first derided capacitors (C1), and the first diode (D1) inverse parallel is in
One power switch pipe (S1) two ends, the i.e. negative electrode of the first diode (D1) are connected with the drain electrode of the first power switch pipe (S1), the
The anode of one diode (D1) is connected with the source electrode of the first power switch pipe (S1), the source electrode of the first power switch pipe (S1) and
The source electrode connection of two power switch pipes (S2), the second diode (D2) inverse parallel in the second power switch pipe (S2) two ends, i.e., the
The negative electrode of two diodes (D2) is connected with the drain electrode of the second power switch pipe (S2), the anode and the second work(of the second diode (D2)
The source electrode connection of rate switching tube (S2), the drain electrode of the 3rd power switch pipe are connected with the first derided capacitors (C1) positive pole, and the three or two
Pole pipe (D1) inverse parallel is in the negative electrode and the 3rd power switch pipe of the first power switch pipe (S1) two ends, i.e. the 3rd diode (D3)
(S3) drain electrode connection, the anode of the 3rd diode (D3) are connected with the source electrode of the 3rd power switch pipe (S3), and the 3rd power is opened
The source electrode for closing pipe (S3) is connected with the source electrode of the 4th power switch pipe (S4), and the 4th diode (D4) inverse parallel is opened in the 4th power
Pipe (S4) two ends are closed, the drain electrode of the 5th power switch pipe (S5) is connected with the positive pole of the second derided capacitors (C2), the 5th diode
(D5) inverse parallel is in the negative electrode and the 5th power switch pipe of the 5th power switch pipe (S5) two ends, i.e. the 5th diode (D5)
(S5) drain electrode connection, the anode of the 5th diode (D5) are connected with the source electrode of the 5th power switch pipe (S5), and the 5th power is opened
The source electrode for closing pipe (S5) is connected with the source electrode of the 6th power switch pipe (S6), and the 6th diode (D6) inverse parallel is opened in the 6th power
Pipe (S6) two ends are closed, i.e. the negative electrode of the 6th diode (D6) is connected with the drain electrode of the 6th power switch pipe (S6), the 6th diode
(D6) anode is connected with the source electrode of the 6th power switch pipe (S6), and the drain electrode of the 7th power switch pipe (S7) is electric with the second partial pressure
The negative pole for holding (C2) is connected, and the 7th diode (D7) inverse parallel is in the 7th power switch pipe (S7) both sides, the 7th power switch pipe
(S7) source electrode, the anode of the 7th diode (D7), the source electrode of the 8th power switch pipe (S8), the anode of the 8th diode (D8)
It is connected, the drain electrode of the 9th power switch pipe (S9) is connected with the first derided capacitors (C1) positive pole, the 9th diode (D9) is anti-simultaneously
Be associated in the 9th power switch pipe (S9) both sides, the source electrode of the 9th power switch pipe (S9), the anode of the 9th diode (D9), the tenth
The source electrode of power switch pipe (S10), the anode of the tenth diode (D12) are connected, the drain electrode of the 6th power switch pipe (S6),
The negative electrode of six diodes (D6), the drain electrode of the 8th power switch pipe (S8), the negative electrode of the 8th diode (D8), the tenth power switch
The drain electrode of pipe (S10), the negative electrode of the tenth diode (D10) are connected together；
Output AC load (7) includes AC load (ZL), one end of AC load (ZL) and output filter capacitor (Cf)
One end, the other end of output inductor (Lf) be connected, the other end of AC load (ZL) and output filter capacitor (C3)
The other end connection.
2. high frequency isolation type five-electrical level inverter according to claims 1, it is characterised in that high frequency transformer (4)
It is high-frequency isolation transformer (4) and full-bridge type frequency converter with output frequency converter (5), output filter (6) is inductance
(Lf) electric capacity (Cf) wave filter；
Described high-frequency isolation transformer (4) include the first primary side winding (N1), the first vice-side winding of the second primary side winding (N2)
(N3)；The drain electrode of (4) first primary side winding (N1) Same Name of Ends of high-frequency isolation transformer and the second power switch pipe (S2), the two or two
The negative electrode of pole pipe (D2) is connected, the non-same polarity of the first primary side winding (N1) Same Name of Ends and the second primary side winding (N2), the 6th
The drain electrode of power switch pipe (S6), the negative electrode of the 6th diode (D6), the drain electrode of the 8th power switch pipe (S8), the 8th diode
(D8) negative electrode, the drain electrode of the tenth power switch pipe (S10), the negative electrode of the tenth diode (D10) are connected, the second primary side winding
(N2) Same Name of Ends is connected with the drain electrode of the 4th power switch pipe (S4), the negative electrode of the 4th diode (D4)；
Described full-bridge type frequency converter (5) include the first two-way switch pipe (SA), the second two-way power switch pipe (SB), the 3rd
Two-way switch pipe (SC) and the 4th two-way power switch pipe (SD), described the first two-way switch pipe (SA), the second bidirectional power
Switching tube (SB), the 3rd two-way switch pipe (SC) and the 4th two-way power switch pipe (SD) are all that the power single by two is opened
Close pipe differential concatenation and constitute the switch for bearing forward direction, reverse voltage stress and current stress, with two-way blocking-up function；The
One two-way power switch pipe (SA) include the 11st power switch pipe (S11), the 12nd power switch pipe (S12), the 11st
Pole pipe (D11), the 12nd diode (D12), the second two-way power switch pipe (SB) include the 13rd power switch pipe (S13),
14th power switch pipe (S14), the 13rd diode (D13), the 14th diode (D14), the 3rd two-way power switch pipe
(SC) include the 15th power switch pipe (S15), the 16th power switch pipe (S16), the 15th diode (D15), the 16th
Diode (D16), the 4th two-way power switch pipe (SD) include the 17th power switch pipe (S17), the 18th power switch pipe
(S18), the 17th diode (D17), the 18th diode (D18)；One end of first two-way power switch pipe (SA) and high frequency
The Same Name of Ends of the secondary primary side winding (N3) of isolating transformer (4) is connected, the other end of the first two-way power switch pipe (SA) and the
One end connection of three two-way power switch pipes (SC), the other end of the 3rd two-way power switch pipe (SC) and high-frequency isolation transformer
The non-same polarity of (4) first vice-side windings (N3) is connected, one end of the second two-way power switch pipe (SB) and high-frequency isolation transformation
The Same Name of Ends of (4) first vice-side winding (N3) of device, one end connection of the first two-way power switch pipe (SA), the second bidirectional power are opened
The other end for closing pipe (SB) is connected with one end of the 4th two-way power switch pipe (SD), the 4th two-way power switch pipe (SD)
The non-same polarity of the other end and (4) first vice-side winding (N3) of high-frequency isolation transformer, the 3rd two-way power switch pipe (SC)
The other end is connected；
The drain electrode of the 11st power switch pipe (S11) is connected as the first bidirectional power with the negative electrode of the 11st diode (D11)
One end of switching tube (SA), the drain electrode of the 12nd power switch pipe (S12) are connected with the negative electrode of the 12nd diode (D12) conduct
The other end of the first two-way power switch pipe (SA), the source electrode of the 11st power switch pipe (S11), the 12nd power switch pipe
(S12) source electrode, the anode of the 11st diode (D11), the anode of the 12nd diode (D12) link together, and the 13rd
The drain electrode of power switch pipe (S13) is connected as the second two-way power switch pipe (SB) with the negative electrode of the 13rd diode (D13)
One end, the drain electrode of the 14th power switch pipe (S14) is connected as the second two-way work(with the negative electrode of the 14th diode (D14)
The other end of rate switching tube (SB), the source electrode of the 13rd power switch pipe (S13), the source electrode of the 14th power switch pipe (S14),
The anode of the 13rd diode (D13), the anode of the 14th diode (D14) link together；15th power switch pipe
(S15) drain electrode is connected with the negative electrode of the 15th diode (D15) one end as the 3rd two-way power switch pipe (SC), and the tenth
The drain electrode of six power switch pipes (S16) is connected as the 3rd two-way power switch pipe with the negative electrode of the 16th diode (D16)
(SC) the other end, the source electrode of the 15th power switch pipe (S15), the source electrode of the 16th power switch pipe (S16), the 15th
The anode of pole pipe (D15), the anode of the 16th diode (D16) link together, the drain electrode of the 17th power switch pipe (S17)
Be connected the one end as the 4th two-way power switch pipe (SD) with the negative electrode of the 17th diode (D17), the 18th power switch
The drain electrode of pipe (S18) is connected with the negative electrode of the 18th diode (D18) other end as the 4th two-way power switch pipe (SD),
The source electrode of the 17th power switch pipe (S17), the source electrode of the 18th power switch pipe (S18), the sun of the 17th diode (D17)
Pole, the anode of the 18th diode (D18) link together；
Described output filter (6) include output inductor (Lf) and output filter capacitor (Cf)；Output inductor (Lf)
One end be connected with the other end of the first two-way power switch pipe (SA), one end of the 3rd two-way power switch pipe (SC), i.e.,
Drain electrode, the negative electrode of the 12nd diode (D12), the 15th power switch pipe (S15) with the 12nd power switch pipe (S12)
Drain electrode, the negative electrode of the 15th diode (D15) are connected, the other end of output inductor (Lf) and output filter capacitor (Cf)
One end connection, the other end of the other end the second two-way power switch pipe (SB) of output filter capacitor (Cf), the 4th two-way work(
One end of rate switching tube (SD) is connected, i.e., the drain electrode, the 12nd diode (D12) with the 14th power switch pipe (S14)
Negative electrode, the drain electrode of the 17th power switch pipe (S17), the negative electrode of the 17th diode (D17) be connected.
3. high frequency isolation type five-electrical level inverter according to claims 1, it is characterised in that high frequency transformer (4) and defeated
Go out frequency converter (5) for high-frequency isolation transformer (4) and full wave type frequency converter, output filter (6) is inductance (Lf)
Electric capacity (Cf) wave filter；
Described high-frequency isolation transformer (4) include the first primary side winding (N1), the second vice-side winding of the second primary side winding (N2)
(N3 '), the 3rd vice-side winding (N4)；The Same Name of Ends of (4) first primary side winding (N1) of high-frequency isolation transformer is opened with the second power
Close the negative electrode connection of the pipe drain electrode of (S2), the second diode (D2), (4) second primary side winding (N2) of high-frequency isolation transformer same
The non-same polarity of name end and the first primary side winding (N1), the 6th power switch pipe (S6) drain electrode, the 8th power switch pipe (D8)
Drain electrode, the drain electrode of the tenth power switch pipe (S11), the negative electrode of the 6th diode (D6), the negative electrode of the 8th diode (D8), the tenth
The negative electrode of diode (D10) is connected, the non-same polarity and the 4th power of (4) second primary side winding (N2) of high-frequency isolation transformer
The drain electrode of switching tube (S4), the negative electrode of the 4th diode (D4) are connected, the 3rd vice-side winding of high-frequency isolation transformer (4)
The non-same polarity of (N3 ') is connected with the Same Name of Ends of the 4th vice-side winding (N4) of high-frequency isolation transformer (4)；
Described full wave type frequency converter (8) include the 5th two-way switch pipe (SA ') and the 6th two-way power switch pipe (SB '),
The 5th described two-way power switch pipe (SA ') and the 6th two-way power switch pipe (SB ') are all that the power single by two is opened
Close pipe differential concatenation and constitute the switch for bearing forward direction, reverse voltage stress and current stress, with two-way blocking-up function；The
Five two-way power switch pipes (SA ') include the 19th power switch pipe (S11 '), the 20th power switch pipe (S12 '), the 19th
Diode (D11 '), the 20th diode (D12 '), the 6th two-way power switch pipe (SB ') include the 21st power switch pipe
(S13 '), the 22nd power switch pipe (S14 '), the 21st diode (D13 '), the 22nd diode (D14 ')；The
One end of five two-way power switch pipes (SA ') is connected with the Same Name of Ends of (4) second vice-side winding (N2 ') of high-frequency isolation transformer,
The other end of the 5th two-way power switch pipe (SA ') is connected with the other end of the 6th two-way power switch pipe (SB '), and the 6th is two-way
One end of power switch pipe (SB ') is connected with the non-same polarity of the 3rd vice-side winding (N3) of high-frequency isolation transformer (4), the 6th pair
It is connected to the other end of power switch pipe (SB ') with the other end of the 5th two-way power switch pipe (SA ')；19th power switch
The drain electrode of pipe (S11 ') is connected as the 5th two-way power switch pipe (SA ') one with the negative electrode of the 19th diode (D11 ')
End, the drain electrode of the 20th power switch pipe (S12 ') are connected as the 5th bidirectional power with the negative electrode of the 20th diode (D12 ')
The other end of switching tube (SA '), the source electrode of the 19th power switch pipe (S11 '), the source of the 20th power switch pipe (S12 ')
Pole, the anode of the 19th diode (D11 '), the anode of the 20th diode (D12 ') link together, and the 21st power is opened
The drain electrode for closing pipe (S13 ') is connected as the 6th two-way power switch pipe (SB ') with the negative electrode of the 21st diode (D13 ')
One end, the drain electrode of the 22nd power switch pipe (S14 ') are connected as the 6th pair with the negative electrode of the 22nd diode (D14 ')
To the other end of power switch pipe (SB '), the source electrode of the 21st power switch pipe (S13 '), the 22nd power switch pipe
The source electrode of (S14 '), the anode of the 21st diode (D13 '), the anode of the 22nd diode (D14 ') link together；
Described output filter (6) include output inductor (Lf) and output filter capacitor (Cf), output inductor (Lf)
One end be connected with the other end of the 5th two-way power switch pipe (SA '), the other end of the 6th two-way power switch pipe (SB ')
Connect, i.e., drain electrode, the negative electrode of the 20th diode (D12 ') with the 20th power switch pipe (S12 '), the 22nd power switch
The pipe drain electrode of (S14 '), the negative electrode of the 22nd diode (D14 ') are connected, the other end of output inductor (Lf) with defeated
Go out one end connection of filter capacitor (Cf), the 3rd secondary of the other end of output filter capacitor (C3) and high-frequency isolation transformer (4)
The non-same polarity of winding (N3 '), the Same Name of Ends connection of the 4th vice-side winding (N4) of high-frequency isolation transformer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620567319.7U CN206023611U (en) | 2016-06-13 | 2016-06-13 | High frequency isolation type five-electrical level inverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620567319.7U CN206023611U (en) | 2016-06-13 | 2016-06-13 | High frequency isolation type five-electrical level inverter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846705A (en) * | 2016-06-13 | 2016-08-10 | 南京理工大学 | High-frequency isolation five-level inverter |
| CN108258697A (en) * | 2018-02-02 | 2018-07-06 | 山东电力设备有限公司 | The energy router of power quality harnessed synthetically and power optimization |
| CN111610387A (en) * | 2020-03-26 | 2020-09-01 | 深圳市鑫翊新能源科技有限公司 | Electronic load device and electronic load circuit |
-
2016
- 2016-06-13 CN CN201620567319.7U patent/CN206023611U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846705A (en) * | 2016-06-13 | 2016-08-10 | 南京理工大学 | High-frequency isolation five-level inverter |
| CN108258697A (en) * | 2018-02-02 | 2018-07-06 | 山东电力设备有限公司 | The energy router of power quality harnessed synthetically and power optimization |
| CN108258697B (en) * | 2018-02-02 | 2023-10-27 | 山东电力设备有限公司 | Energy router for comprehensive management of electric energy quality and power optimization |
| CN111610387A (en) * | 2020-03-26 | 2020-09-01 | 深圳市鑫翊新能源科技有限公司 | Electronic load device and electronic load circuit |
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