CN207053414U - A kind of high-frequency isolation ac-dc conversion circuit - Google Patents
A kind of high-frequency isolation ac-dc conversion circuit Download PDFInfo
- Publication number
- CN207053414U CN207053414U CN201720827416.XU CN201720827416U CN207053414U CN 207053414 U CN207053414 U CN 207053414U CN 201720827416 U CN201720827416 U CN 201720827416U CN 207053414 U CN207053414 U CN 207053414U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- source
- frequency
- bridge inverter
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model discloses high-frequency isolation ac-dc conversion circuit, form by a single phase ac source, a DC source, one first electric capacity, one second electric capacity, a high-voltage energy storage wave filter, a high frequency full bridge inverter, a high frequency half bridge inverter circuit, one first inductance, one second inductance, a high-frequency isolation transformer, a DC side synchro switch, the drive circuit for driving switch pipe and with the control circuit that the drive circuit is connected；The operation principle of the translation circuit：On the basis of the voltage of predetermined DC side, according to external voltage reference, mode of operation is opened using the difference of inverter bridge, translation circuit is switched on two kinds of mode of operations of rectification and inversion, while Sofe Switch is realized using the mode of resonance of high-frequency inversion bridge topology.
Description
Technical field
It the utility model is related to Switching Power Supply, and in particular to a kind of high-frequency isolation ac-dc conversion circuit.
Background technology
Needing carry out alternating current-direct current two-way changing (i.e. discharge and recharge) application scenario, as energy storage inverter, off-network inverter,
The links such as Battery Plant's aging chemical conversion, detection, mostly based on low frequency isolation scheme, the two-way change of mainly high-frequency isolation of tracing it to its cause
Change that technology is complex, while the HF switch loss caused by high frequency conversion causes efficiency low, loses more than gain.And low frequency becomes
Depressor isolation technology relative maturity is stable, but for relative high frequency isolation technology, its shortcoming is also apparent from：The method of low frequency isolation
Middle volume of transformer Pang is necessarily large and bulky, therefore is difficult to promote in many application scenarios, using limited.In consideration of it, it has been proposed that two
The more compromise scheme of kind：A kind of is to use the method for separating charge-discharge circuit, realizes the high frequency of transformer isolation, volume
There is certain diminution, efficiency can also be higher, but relative volume or larger；Another is to use to have two-way changing function
Circuit, sacrifice certain efficiency, realize the high frequency of isolation, so can largely reduce volume, and relative to list
To converter technique, power density and efficiency improve, but efficiency has still made certain sacrifice.
Therefore, it is necessary to a kind of new circuit is designed, can by rational translation circuit and suitable control method
To realize high power density, high efficiency and electrical isolation, while the relatively wide-voltage range of different battery types can be met again
Conversion.
Utility model content
Main purpose of the present utility model is to propose the changeable high-frequency isolation to work in rectification mode and inverter mode
Ac-dc conversion circuit, to solve existing alternating current-direct current two-way changing complex circuit designs, be difficult to high-frequency isolation and work
The low technical problem of efficiency.
One of embodiment of the present utility model provides a kind of high-frequency isolation ac-dc conversion circuit, by a blow-up
It is Liu Yuan, a DC source, one first electric capacity, one second electric capacity, a high-voltage energy storage wave filter, a high frequency full bridge inverter, one high
Frequency half-bridge inversion circuit, one first inductance, one second inductance, a high-frequency isolation transformer, a DC side synchro switch, for driving
The drive circuit of dynamic switching tube and the control circuit being connected with the drive circuit are formed；Wherein, the first electric capacity and blow-up
Stream source is in parallel, and the second electric capacity is in parallel with DC source；The high frequency full bridge inverter and the high frequency half bridge inverter circuit are
Inverter bridge based on switching tube；In the high frequency full bridge inverter：First, second exchange end is respectively connecting to the first inductance
The second end and the first electric capacity the second end, first, second DC terminal is respectively connecting to the positive pole of high-voltage energy storage wave filter and negative
Pole；The first end of first inductance is connected with the first end of the first electric capacity；In the high frequency half bridge inverter circuit：First, second
DC terminal is respectively connecting to the positive pole and negative pole of high-voltage energy storage wave filter, the first exchange end by the second inductance connection tremendously high frequency every
From wherein one end of transformer single phase ac source, the second exchange end is connected to the another of high-frequency isolation transformer single phase ac source
Outer one end；The DC side synchro switch is made up of first switch pipe and second switch pipe, the drain electrode point of first, second switching tube
It is not connected to the first, the 3rd end of high-frequency isolation transformer direct current source, the source electrode of first, second switching tube is connected to described
The negative pole of DC source；Second end of the high-frequency isolation transformer direct current source is connected to the positive pole of the DC source.
Another embodiment of the present utility model provides a kind of high-frequency isolation ac-dc conversion circuit, by a single phase ac
Source, a DC source, one first electric capacity, one second electric capacity, a high-voltage energy storage wave filter, a high frequency full bridge inverter, a high frequency
Half-bridge inversion circuit, one first inductance, one second inductance, a high-frequency isolation transformer, a DC side synchro switch, for driving
The drive circuit of switching tube and the control circuit being connected with the drive circuit are formed；Wherein, the first electric capacity and single phase ac
Source is in parallel, and the second electric capacity is in parallel with DC source；The high frequency full bridge inverter and the high frequency half bridge inverter circuit are bases
In the inverter bridge of switching tube；In the high frequency full bridge inverter：First, second exchange end is respectively connecting to the first inductance
Second end and the second end of the first electric capacity, first, second DC terminal are respectively connecting to the positive pole and negative pole of high-voltage energy storage wave filter；
The first end of first inductance is connected with the first end of the first electric capacity；In the high frequency half bridge inverter circuit：First, second direct current
End is respectively connecting to the positive pole and negative pole of high-voltage energy storage wave filter, and the first exchange end is isolated by the second inductance connection tremendously high frequency to be become
Wherein one end of depressor single phase ac source, the second exchange end are connected to other the one of high-frequency isolation transformer single phase ac source
End；The DC side synchro switch is made up of first, second switching tube and the five, the 6th electric capacity, the source electrode of first switch pipe
Drain electrode with second switch pipe is commonly connected to the first end of high-frequency isolation transformer direct current source, the drain electrode of first switch pipe with
The first end of 5th electric capacity is commonly connected to the first end of the positive pole of the DC source, the source electrode of second switch pipe and the 6th electric capacity
Be commonly connected to the negative pole of the DC source, the second end of the 5th electric capacity and the second end of the 6th electric capacity be commonly connected to high frequency every
From the second end of transformer dc source.
The utility model also separately provides a kind of high-frequency isolation ac-dc conversion circuit, and the translation circuit in the embodiment is
Single phase ac source in foregoing high-frequency isolation ac-dc conversion circuit is replaced with into three-phase alternating current source, correspondingly, high frequency full-bridge
Inverter circuit uses three-phase bridge.
Foregoing high-frequency isolation ac-dc conversion circuit provided by the utility model, using the DC source reference voltage set as base
Standard, according to the real-time voltage of DC source, automatically switch between rectification mode and inverter mode and work, and in the course of the work
According to the real-time voltage of DC source and release or absorb (inverter mode：Release；Rectification mode：Absorb) size of current, to change
The high-frequency inversion bridge of DC side and the frequency of DC side synchro switch and dutycycle size, utilize the humorous of high-frequency inversion bridge topology
The state of shaking realizes Sofe Switch, and reduce each switching tube in bridge inverter main circuit opens and turn off stress, reduces switching loss,
Contribute to the working frequency of inverter circuit to improve or efficiency improve so as to improve power density and reduce volume；So as to realize height
Power density, high efficiency and high frequency electrical isolation.
Brief description of the drawings
Fig. 1 is the schematic diagram for the high-frequency isolation ac-dc conversion circuit that the utility model embodiment 1 provides；
Fig. 2 is PWM driver' s timing figures when Fig. 1 translation circuit works in rectification mode；
Fig. 3 is PWM driver' s timing figures when Fig. 1 translation circuit works in inverter mode；
Fig. 4 is the schematic diagram for the high-frequency isolation ac-dc conversion circuit that the utility model embodiment 2 provides；
Fig. 5 is the schematic diagram for the high-frequency isolation ac-dc conversion circuit that the utility model embodiment 3 provides；
Fig. 6 is the schematic diagram for the high-frequency isolation ac-dc conversion circuit that the utility model embodiment 4 provides.
Embodiment
Below against accompanying drawing and with reference to preferred embodiment, the utility model is described in further detail.
Embodiment 1
The present embodiment provides a kind of high-frequency isolation ac-dc conversion circuit as shown in Figure 1 (aftermentioned abbreviation translation circuit),
The translation circuit is by single phase ac source V1, DC source V2, the first electric capacity C1, the second electric capacity C2, high-voltage energy storage wave filter C, high frequency
Full bridge inverter 100, high frequency half bridge inverter circuit 200, the first inductance L1, the second inductance L2, high-frequency isolation transformer T, one
DC side synchro switch 300, the drive circuit for driving switch pipe and the control circuit structure being connected with the drive circuit
Into；Wherein, the first electric capacity C1 is in parallel with single phase ac source V1, and the second electric capacity C2 is in parallel with DC source V2.The high frequency full-bridge is inverse
Become circuit 100 and the high frequency half bridge inverter circuit 200 is all based on the inverter bridge of switching tube.
Specifically, as shown in figure 1, the high frequency full bridge inverter 100 has four input/output terminals, respectively two
Individual exchange end (being used to inputting or exporting AC signal) and two DC terminals (being used to inputting or exporting direct current signal), wherein one
Individual exchange end is connected to the first inductance L1 the second end, another exchange end is connected to the first electric capacity C1 the second end, the first electricity
Sense L1 first end is connected with the first electric capacity C1 first end；Two DC terminals are being respectively connecting to high-voltage energy storage wave filter C just
Pole+BUS and negative pole-BUS.In a kind of specific example, the high frequency full bridge inverter 100 is by four switching tube Q5~Q8
Form, switching tube Q5~Q8 is preferably NMOS FETs, and the drain electrode of wherein switching tube Q5 source electrode and switching tube Q7 is connected
And draw and to form an exchange end to be connected to the first inductance L1 the second end, the drain electrode of switching tube Q6 source electrode and switching tube Q8
It is connected and draws to form another exchange end to be connected to the first electric capacity C1 the second end, switching tube Q5, Q6 drain electrode is connected simultaneously
Draw and form a DC terminal and be connected to high-voltage energy storage wave filter C positive pole+BUS, switching tube Q7, Q8 source electrode are connected and drawn
Go out another DC terminal and be connected to high-voltage energy storage wave filter C negative pole-BUS.When the translation circuit works in rectification mode
When, the high frequency full bridge inverter 100 works in PFC (power factor correction) rectification modes and is used as boosted switch, two
Exchange end is signal input part, and two DC terminals are signal output part, will pass through LC wave filters (by the electricity of the first electric capacity C1 and first
Sense L1 form) AC signal be transformed to direct current signal；And when the translation circuit works in inverter mode, the high frequency is complete
Bridge inverter circuit 100 switchs as high-frequency inversion, and two DC terminal is signal input part, and two exchange ends are signal output
End, AC signal is transformed to by the direct current signal of the output end from high frequency half bridge inverter circuit 200.Need to illustrate：The height
The working frequency of frequency full bridge inverter 100 is in more than 30KHz.
As shown in figure 1, the high frequency half bridge inverter circuit 200 has four input/output terminals, respectively two exchange ends
(being used to inputting or exporting AC signal) and two DC terminals (being used to inputting or exporting direct current signal), two DC terminal difference
Positive pole+the BUS and negative pole-BUS of the high-voltage energy storage wave filter C are connected to, one of exchange end is connected by the second inductance L2
Being connected to high-frequency isolation transformer T single phase acs source, (single phase ac source herein is referred to exchange side output signal or incited somebody to action
Signal from AC couples past side) wherein one end 4, it is mono- that another exchange end is connected to high-frequency isolation transformer T
The other end 5 of cross streams source.
In a more preferred embodiment, the high frequency half bridge inverter circuit 200 is by two switching tubes Q3, Q4 and two electricity
Hold C3, C4 to form, electric capacity C3 first end is connected with switching tube Q3 drain electrode and draws to form one of DC terminal (direct current
End is connected to high-voltage energy storage wave filter C positive pole+BUS), electric capacity C4 first end is connected and drawn with switching tube Q4 source electrode
Form another DC terminal (DC terminal is connected to high-voltage energy storage wave filter C negative pole-BUS).Switching tube Q3 source electrode is with opening
Close pipe Q4 drain electrode be connected and draw to be formed an exchange end (the exchange end by the second inductance L2 of series connection and be connected to high frequency every
The first end 4 of single phase ac source from transformer T), electric capacity C3 the second end is connected with electric capacity C4 the second end and draws shape
Into another exchange end (the exchange end is connected to the second end 5 of high-frequency isolation transformer T single phase ac source).
As shown in figure 1, DC side synchro switch 300 includes two switching tubes Q1, Q2, switching tube Q1, Q2 drain electrode difference
It is connected to high-frequency isolation transformer T and is connected to DC source V2 simultaneously in the first, the 3rd end 1,3 of direct current source, both source electrodes
Negative pole；In addition, the second end 2 of high-frequency isolation transformer T direct current source is connected to DC source V2 positive pole.
It is to be appreciated that the working frequency of high frequency half bridge inverter circuit 200 and DC side synchro switch 300 100KHz with
On.In preferable scheme, electric capacity C3 and C4 in high frequency half bridge inverter circuit 200 are high-frequency pole-free electric capacity, and high-voltage energy storage is filtered
Ripple device C is electrochemical capacitor, and the coil turn of the high-frequency isolation transformer T direct current sources is less than 4 circles, and with normal leakage
Sense.DC side synchro switch 300 is without additional afterflow filter inductance.The drive circuit is to be used to drive the translation circuit
In switching tube.
The present embodiment also provides the control method of above-mentioned translation circuit, is cut for the real-time voltage value according to DC source V2
The mode of operation (rectification mode or inverter mode) of circuit is changed, the control method includes：
When the translation circuit works in rectification mode：The high frequency full bridge inverter is controlled by control circuit
100 work in PFC rectification states and are boosted, and control the high frequency half bridge inverter circuit 200 to work in inverter mode；If
The DC source V2's receives electric current more than or equal to 0.1 times of rated current, then：Opened with pwm signal driving first and second
Close that pipe Q1, Q2 is open-minded, first, second switching tube opens sequential with the high frequency half bridge inverter circuit 200 when opening
Enter line displacement based on the center of sequence, and dutycycle size is opened to improve efficiency according to switching frequency adjustment；
When the translation circuit works in inverter mode：According to the voltage of the DC source V2：Control the high frequency half
Bridge inverter circuit 200 carries out on/off based on the center for opening sequential of the DC side synchro switch 300, and
Enter line displacement according to the voltage levels of the DC source V2 and adjustment opens dutycycle size to improve efficiency.
Further description is carried out to above-mentioned control method by taking the translation circuit shown in Fig. 1 as an example below：
Control circuit judges the conversion electricity according to preset voltage value and the magnitude relationship of DC source V2 real-time voltage value
Road should work in rectification mode or inverter mode.
It is assumed that when control circuit judges that the translation circuit need to work in rectification mode, i.e. electric energy passes from exchange source
It is sent to direct current source.Now：High frequency full bridge inverter 100 is operated in PFC rectification states, and AC-input voltage is transformed into one
Individual stationary value；High frequency half bridge inverter circuit 200 works in inverter mode, using pwm signal driving switch pipe Q3, Q4, during driving
Sequence figure as shown in Fig. 2 the DC voltage that DC terminal is inputted is reverse into high-frequency pulse voltage (AC signal), then by high frequency every
From transformer T coupling, be sent to DC side synchro switch 300, according to DC source V2 voltage swing and its absorb electric current (or
Claim receive electric current) size, judge whether that switching tube Q1 and Q2 need to be opened, if DC source V2 absorption electric current is less than rated current
0.1 times, then switching tube Q1 and Q2 be not open-minded, works in the state of parasitic diode natural commutation, if DC source V2 absorption
Electric current is at more than 0.1 times of rated current, then controlling switch pipe Q1 and Q2 is open-minded, opens sequential such as Fig. 2, switching tube Q1, Q2's
Open sequential by switching tube Q3, Q4 open sequential center based on offset 1/4 work period backward, Simultaneous Switching pipe Q3,
Certain dead time is left between Q4 prevents shoot through.For the control process of high frequency half bridge inverter circuit 200, due to
Electric capacity C3 and C4 resonance effect, it is possible to achieve resonant transformation process, in full operating range, according to load end (rectification mode
Lower DC source V2 is load end) voltage swing and absorb size of current to change working frequency or dutycycle, absorb electricity
Stream is bigger, and dutycycle is bigger, and switching frequency is higher, and off-centring is more, so as to ensure that switching tube Q3 and Q4 can obtain soft open
The function of pass, realize the high efficiency and high power density of the translation circuit.
It is assumed that when control circuit judges that the translation circuit need to work in inverter mode, i.e. electric energy passes from direct current source
It is sent to exchange source.Now：Switching tube Q1 and Q2 is open-minded, opens timing reference Fig. 3, works in DC side synchro switch 300
High-frequency inversion state, DC source V2 d. c. voltage signal is transformed to AC signal, by high-frequency isolation transformer T coupling
Close, AC signal is sent into high frequency half bridge inverter circuit 200 carries out rectification and boosting, and switching tube Q3's and Q4 opens sequential ginseng
Fig. 3 is examined, certain dead band is left between switching tube Q1 and Q2, in addition, switching tube Q1, Q2's opens sequential with switching tube Q3, Q4
1/4 work period of biased forwards based on opening sequential center.Now DC side synchro switch 300 is similar to traditional push away
Pull structure, but due in high-frequency isolation transformer T direct current source normal leakage inductance be present, therefore direct current signal passes through DC side
There is certain slowly rate of rise after synchro switch 300, be different from conventional recommend herein.
Embodiment 2
The present embodiment provides a kind of high-frequency isolation ac-dc conversion circuit similar to Example 1, as shown in figure 4, difference
It is, the direct current source of the high-frequency isolation transformer in the present embodiment only has two connectivity ports, meanwhile, the direct current of the present embodiment
The specific Inner Constitution of side synchro switch and its different with the connected mode of high-frequency isolation transformer.Something in common is no longer heavy
Multiple description, only explanation difference part, specifically, with reference to figure 4, the DC side synchro switch 400 in the present embodiment is by first, second
Switching tube Q1, Q2 and the five, the 6th electric capacity C5, C6 are formed, first switch pipe Q1 source electrode and second switch pipe Q2 drain electrode
The first end 11 of high-frequency isolation transformer T1 direct current sources is commonly connected to, first switch pipe Q1 drain electrode is with the 5th electric capacity C5's
First end is commonly connected to the positive pole of the DC source V2, and the first end of second switch pipe Q2 source electrode and the 6th electric capacity C6 is common
The negative pole of the DC source V2 is connected to, the second end of the 5th electric capacity and the second end of the 6th electric capacity are commonly connected to high-frequency isolation
Second end 12 of transformer T1 direct current sources.
The translation circuit that the present embodiment provides is identical with the control method principle of the translation circuit of embodiment 1, herein no longer
Repeat, meanwhile, it can also reach similar effect.
Embodiment 3
The high-frequency isolation ac-dc conversion circuit that the present embodiment provides is as shown in figure 5, the translation circuit provided with embodiment 1
Difference be：Single phase ac source V1 is substituted using three-phase alternating current source, correspondingly, high frequency full bridge inverter 100 is also changed to adopt
With three-phase bridge 100 ', while each phase in three-phase alternating current source all uses a LC wave filter.Remainder is same as Example 1,
Operation principle is identical, repeats no more.
Embodiment 4
The high-frequency isolation ac-dc conversion circuit that the present embodiment provides is as shown in fig. 6, the translation circuit provided with embodiment 2
Difference be：Single phase ac source V1 is substituted using three-phase alternating current source, correspondingly, high frequency full bridge inverter 100 is also changed to adopt
With three-phase bridge 100 ', while each phase in three-phase alternating current source all uses a LC wave filter.Remainder is same as Example 1,
Operation principle is identical, repeats no more.
It is to be appreciated that various embodiments above is not limited to best applications.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the utility model person of ordinary skill in the field
For, without departing from the concept of the premise utility, some equivalent substitutes or obvious modification, and performance can also be made
Or purposes is identical, the scope of protection of the utility model should be all considered as belonging to.
Claims (10)
- A kind of 1. high-frequency isolation ac-dc conversion circuit, it is characterised in that：By a single phase ac source (V1), a DC source (V2), One first electric capacity (C1), one second electric capacity (C2), a high-voltage energy storage wave filter (C), a high frequency full bridge inverter (100), one High frequency half bridge inverter circuit (200), one first inductance (L1), one second inductance (L2), a high-frequency isolation transformer (T), always Flow side synchro switch (300), the drive circuit for driving switch pipe and the control circuit structure being connected with the drive circuit Into；Wherein, the first electric capacity (C1) is in parallel with single phase ac source (V1), and the second electric capacity (C2) is in parallel with DC source (V2)；The height Frequency full bridge inverter (100) and the high frequency half bridge inverter circuit (200) are all based on the inverter bridge of switching tube；In the high frequency full bridge inverter (100)：First, second exchange end is respectively connecting to the second of the first inductance (L1) End and the first electric capacity (C1) the second end, first, second DC terminal be respectively connecting to high-voltage energy storage wave filter (C) positive pole (+ ) and negative pole (- BUS) BUS；The first end of first inductance (L1) is connected with the first end of the first electric capacity (C1)；In the high frequency half bridge inverter circuit (200)：First, second DC terminal is respectively connecting to high-voltage energy storage wave filter (C) Positive pole (+BUS) and negative pole (- BUS), it is single that the first exchange end by the second inductance (L2) is connected to high-frequency isolation transformer (T) Wherein one end (4) of cross streams source, the second exchange end are connected to other the one of high-frequency isolation transformer (T) single phase ac source Hold (5)；The DC side synchro switch (300) is made up of first switch pipe (Q1) and second switch pipe (Q2), first, second switch The drain electrode of pipe (Q1, Q2) is respectively connecting to the first, the 3rd end (1,3) of high-frequency isolation transformer (T) direct current source, and first, the The source electrode of two switching tubes (Q1, Q2) is connected to the DC source (V2) negative pole；The second end (2) of high-frequency isolation transformer (T) the direct current source is connected to the DC source (V2) positive pole.
- 2. high-frequency isolation ac-dc conversion circuit as claimed in claim 1, it is characterised in that：The high frequency half bridge inverter circuit (200) it is made up of the three, the 4th electric capacity (C3, C4) and the three, the 4th switching tubes (Q3, Q4)；The first of 3rd electric capacity (C3) The first DC terminal for being connected with the drain electrode of the 3rd switching tube (Q3) and drawing and to form the high frequency half bridge inverter circuit (200) is held, The first end of 4th electric capacity (C4) is connected and drawn to form the high frequency half bridge inverter circuit with the source electrode of the 4th switching tube (Q4) (200) the second DC terminal；The source electrode of 3rd switching tube (Q3) is connected and drawn to form institute with the drain electrode of the 4th switching tube (Q4) The first exchange end of high frequency half bridge inverter circuit (200) is stated, the second end of the three, the 4th electric capacity (C3, C4) is connected and draws shape Second into the high frequency half bridge inverter circuit (200) exchanges end.
- 3. high-frequency isolation ac-dc conversion circuit as claimed in claim 2, it is characterised in that：Third and fourth electric capacity is equal For high-frequency pole-free electric capacity.
- 4. high-frequency isolation ac-dc conversion circuit as claimed in claim 1, it is characterised in that：The high-frequency isolation transformer (T) coil turn of direct current source is less than 4 circles, and has leakage inductance.
- 5. high-frequency isolation ac-dc conversion circuit as claimed in claim 1, it is characterised in that：The high frequency full bridge inverter (100) it is made up of four switching tubes, four switching tubes are NMOS FETs.
- A kind of 6. high-frequency isolation ac-dc conversion circuit, it is characterised in that：By a single phase ac source (V1), a DC source (V2), One first electric capacity (C1), one second electric capacity (C2), a high-voltage energy storage wave filter (C), a high frequency full bridge inverter (100), one High frequency half bridge inverter circuit (200), one first inductance (L1), one second inductance (L2), a high-frequency isolation transformer (T1), always Flow side synchro switch (400), the drive circuit for driving switch pipe and the control circuit structure being connected with the drive circuit Into；Wherein, the first electric capacity (C1) is in parallel with single phase ac source (V1), and the second electric capacity (C2) is in parallel with DC source (V2)；The height Frequency full bridge inverter (100) and the high frequency half bridge inverter circuit (200) are all based on the inverter bridge of switching tube；In the high frequency full bridge inverter (100)：First, second exchange end is respectively connecting to the second of the first inductance (L1) End and the first electric capacity (C1) the second end, first, second DC terminal be respectively connecting to high-voltage energy storage wave filter (C) positive pole (+ ) and negative pole (- BUS) BUS；The first end of first inductance (L1) is connected with the first end of the first electric capacity (C1)；In the high frequency half bridge inverter circuit (200)：First, second DC terminal is respectively connecting to high-voltage energy storage wave filter (C) Positive pole (+BUS) and negative pole (- BUS), it is single that the first exchange end by the second inductance (L2) is connected to high-frequency isolation transformer (T1) Wherein one end (14) of cross streams source, the second exchange end are connected to high-frequency isolation transformer (T1) single phase ac source in addition One end (15)；The DC side synchro switch (400) is by first, second switching tube (Q1, Q2) and the five, the 6th electric capacity (C5, C6) structures Into the source electrode of first switch pipe (Q1) is commonly connected to high-frequency isolation transformer (T1) direct current with the drain electrode of second switch pipe (Q2) The first end (11) of source, the drain electrode of first switch pipe (Q1) and the first end of the 5th electric capacity (C5) are commonly connected to the direct current The first end of the positive pole in source (V2), the source electrode of second switch pipe (Q2) and the 6th electric capacity (C6) is commonly connected to the DC source (V2) negative pole, the second end of the 5th electric capacity and the second end of the 6th electric capacity are commonly connected to high-frequency isolation transformer (T1) direct current The second end (12) of source.
- 7. high-frequency isolation ac-dc conversion circuit as claimed in claim 6, it is characterised in that：The high frequency half bridge inverter circuit (200) it is made up of the three, the 4th electric capacity (C3, C4) and the three, the 4th switching tubes (Q3, Q4), the first of the 3rd electric capacity (C3) The first DC terminal for being connected with the drain electrode of the 3rd switching tube (Q3) and drawing and to form the high frequency half bridge inverter circuit (200) is held, The first end of 4th electric capacity (C4) is connected and drawn to form the high frequency half bridge inverter circuit with the source electrode of the 4th switching tube (Q4) (200) the second DC terminal；The source electrode of 3rd switching tube (Q3) is connected and drawn to form institute with the drain electrode of the 4th switching tube (Q4) The first exchange end of high frequency half bridge inverter circuit (200) is stated, the second end of the three, the 4th electric capacity (C3, C4) is connected and draws shape Second into the high frequency half bridge inverter circuit (200) exchanges end.
- 8. high-frequency isolation ac-dc conversion circuit as claimed in claim 7, it is characterised in that：Third and fourth electric capacity is equal For high-frequency pole-free electric capacity.
- 9. high-frequency isolation ac-dc conversion circuit as claimed in claim 6, it is characterised in that：The high frequency full bridge inverter (100) it is made up of four switching tubes, four switching tubes are NMOS FETs.
- 10. the high-frequency isolation ac-dc conversion circuit as described in claim 1 or 6, it is characterised in that：Substituted with three-phase alternating current source Single phase ac source (V1), correspondingly, high frequency full bridge inverter use three-phase bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720827416.XU CN207053414U (en) | 2017-07-10 | 2017-07-10 | A kind of high-frequency isolation ac-dc conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720827416.XU CN207053414U (en) | 2017-07-10 | 2017-07-10 | A kind of high-frequency isolation ac-dc conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207053414U true CN207053414U (en) | 2018-02-27 |
Family
ID=61495882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720827416.XU Expired - Fee Related CN207053414U (en) | 2017-07-10 | 2017-07-10 | A kind of high-frequency isolation ac-dc conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207053414U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108780012A (en) * | 2018-04-17 | 2018-11-09 | 深圳和而泰数据资源与云技术有限公司 | AC Electrical Machine Winding temperature sensing circuit, temperature monitor and alternating current generator |
| CN110336483A (en) * | 2019-07-23 | 2019-10-15 | 深圳市三瑞电源有限公司 | A kind of two-way inverter |
-
2017
- 2017-07-10 CN CN201720827416.XU patent/CN207053414U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108780012A (en) * | 2018-04-17 | 2018-11-09 | 深圳和而泰数据资源与云技术有限公司 | AC Electrical Machine Winding temperature sensing circuit, temperature monitor and alternating current generator |
| WO2019200534A1 (en) * | 2018-04-17 | 2019-10-24 | 深圳和而泰数据资源与云技术有限公司 | Ac motor winding temperature detection circuit, temperature detector and ac motor |
| CN110336483A (en) * | 2019-07-23 | 2019-10-15 | 深圳市三瑞电源有限公司 | A kind of two-way inverter |
| CN110336483B (en) * | 2019-07-23 | 2024-04-19 | 深圳市三瑞电源有限公司 | Bidirectional inverter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104753369B (en) | A kind of high-frequency isolation ac-dc conversion circuit and its control method | |
| CN204465374U (en) | A kind of high-frequency isolation ac-dc conversion circuit | |
| CN106059306B (en) | A kind of multiple-unit diode capacitance network high-gain full-bridge isolated DC converter | |
| CN105846696B (en) | A kind of two-stage type AC-DC converter and its control method | |
| CN100541993C (en) | Superconducting energy storage bidirectional three-level soft switch DC/DC | |
| CN101478252B (en) | X-high frequency chain inverter without DC filtering stage | |
| CN108736733A (en) | Two-way DC/DC converters and its control method is isolated in a kind of variable turns ratio | |
| CN107733236A (en) | A kind of two-way Sofe Switch DC transfer circuit of wide scope and its control method | |
| CN106100344A (en) | A kind of LLC resonant converter with liter high voltage gain | |
| CN102723873A (en) | Dual-input full-isolation integrated current transformer | |
| CN104852590B (en) | A kind of new three-level LLC resonance inverter | |
| CN207053414U (en) | A kind of high-frequency isolation ac-dc conversion circuit | |
| CN206490584U (en) | The two-way DC/DC converter topologies of three level with coupling inductance | |
| CN100571006C (en) | Superconducting energy storage bidirectional three-level soft switch DC/DC converter and control method thereof | |
| CN107204707A (en) | A kind of two-way isolation DC/DC converter and its control method for being used to suppress peak voltage | |
| CN107565814A (en) | A kind of quasi- Z source switch boosting inverters of high-gain suitable for fuel cell power generation | |
| CN207368884U (en) | A kind of two-way Sofe Switch DC transfer circuit of wide scope | |
| CN111181411B (en) | Variable/fixed bus voltage ultra-wide gain range bidirectional dc/dc converter | |
| CN108539988A (en) | A kind of converter and its control method | |
| CN205754023U (en) | A kind of high efficiency high-power phase-shifting full-bridge Zero-voltage soft switch circuit | |
| CN107171564A (en) | A kind of Active Clamped Forward Converters | |
| CN204858982U (en) | Three level LLC resonant transformation wares | |
| CN208257666U (en) | A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit | |
| CN101127482A (en) | Original edge clamp circuit of DC converter | |
| CN207368900U (en) | A kind of high-frequency isolation ac-dc conversion circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 Termination date: 20200710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |