CN208257666U - A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit - Google Patents
A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit Download PDFInfo
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- CN208257666U CN208257666U CN201820801615.8U CN201820801615U CN208257666U CN 208257666 U CN208257666 U CN 208257666U CN 201820801615 U CN201820801615 U CN 201820801615U CN 208257666 U CN208257666 U CN 208257666U
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Abstract
A kind of three switch push-pull provided by the utility model inputs High Frequency Link single-stage inverter circuit, including three switch push-pull circuits, cycle translation circuit, clamp circuit, the first transformer, the second transformer；The three switch push-pulls circuit includes power supply E, switching tube SP1, switching tube SP2, switching tube SP3；The switching tube SP1, switching tube SP3, the primary coil of the first transformer, the second transformer primary coil connect cyclization；The one end the power supply E and switching tube SP2Connection, the other end are connected to switching tube SP1With switching tube SP3Between.Full-bridge active clamp is applied to transformer secondary by the inverter circuit, realizes the energy and clamper cycle translation circuit switching tube both end voltage of the reliable change of current of cycle translation circuit, recycling filter inductance and leakage inductance.The circuit is converted with single stage power, wide scope Sofe Switch, and leakage inductance energy recycling, low compressive stress is low, the high-quality advantage of output voltage waveforms.
Description
Technical field
The utility model relates to a kind of three switch push-pulls to input High Frequency Link single-stage inverter circuit, belong to electricity field.
Background technique
At High Frequency Link single-stage inverter (High frequency link single stage inverter, HFL-SSI)
Primary side has the advantages that high step-up ratio when using push-pull circuit, has advantage in low-voltage power supply occasion.But push-pull circuit can only
Positive and negative two level are generated, when primary side uses full-bridge circuit in contrast, unipolarity phase shift modulation method can be applied to original
Side circuit, and then realize wide scope Sofe Switch.However, full-bridge circuit is needed using four switching tubes, make compared to push-pull circuit more
With two switching tubes.In addition, during HFL-SSI cycle translation circuit change of current dead zone, filter inductance electric current and leakage inductance electric current
Access is blocked by force, and cycle translation circuit switching tube both ends is caused to generate very high due to voltage spikes.
Utility model content
Technical problem: in order to solve the defects of prior art, it is high that the utility model provides a kind of three switch push-pulls input
Frequency chain single-stage inverter circuit.
Technical solution: a kind of three switch push-pulls input High Frequency Link single-stage inverter circuit provided by the utility model, including three
Switch push-pull circuit, cycle translation circuit, active clamp circuit, the first transformer, the second transformer；
The three switch push-pulls circuit includes power supply E, switching tube SP1, switching tube SP2, switching tube SP3；The switching tube
SP1, switching tube SP3, the primary coil of the first transformer, the second transformer primary coil connect cyclization；The one end the power supply E
With switching tube SP2Connection, the other end are connected to switching tube SP1With switching tube SP3Between；Switching tube SP2The other end is connected to the first change
Between the primary coil of depressor and the primary coil of the second transformer；
The active clamp circuit includes switching tube SC1, switching tube SC2, switching tube SC3, switching tube SC4, diode D1, two
Pole pipe D2, capacitor C1, capacitor C2；The switching tube SC1Source electrode and switching tube SC2Drain electrode connection；The switching tube SC3Source
Pole and switching tube SC4Drain electrode connection；Capacitor C1Capacitor C2Connection；The switching tube SC1Drain electrode, switching tube SC3Drain electrode,
Diode D1Cathode and capacitor C1Connection；The switching tube SC2Source electrode, switching tube SC4Source electrode, diode D2Anode and
Capacitor C2Connection；Diode D1Anode, diode D2Cathode connection；
The three switch push-pulls circuit, cycle translation circuit, active clamp circuit are connected by transformer；
The cycle translation circuit includes switching tube S1, switching tube S2, switching tube S3, switching tube S4；The switching tube S1's
Source electrode and switching tube S2Source electrode connect to form two-way switch pipe S1-S2；The switching tube S3Source electrode and switching tube S4Source electrode
Connection forms two-way switch pipe S3-S4；
The transformer includes two primary coils, two secondary coils；One primary coil one end is connected to switching tube
SP1Source electrode and switching tube SP2Drain electrode between, the other end is connected to capacitor CP1With capacitor CP2Between；The secondary of first transformer
Coil, two-way switch pipe S1-S2, two-way switch pipe S3-S4, the second transformer secondary coil be sequentially connected cyclization；Switching tube S2
Drain electrode and switching tube S4Drain electrode connection, and with filter inductance LfOne end connection；Filter inductance LfOther end and filtering
Capacitor CfParallel circuit is formed by with load resistance R to connect；Filter capacitor CfParallel circuit other one is formed by with load R
End is connect with reference；
The secondary coil and switching tube S of first transformer1Drain electrode between with switching tube SC1Source electrode and switching tube SC2's
It is connected between drain electrode, the secondary coil and switching tube S of the second transformer3Drain electrode between with switching tube SC3Source electrode and switching tube
SC4Drain electrode between connect, diode D1Anode and diode D2Cathode between with switching tube S2Drain electrode and switching tube S4
Drain electrode between connect.
The utility model has the advantages that inverter circuit provided by the utility model is by full-bridge active clamp (Full bridge active
Clamp, FBAC) it is applied to transformer secondary, the energy realized the reliable change of current of cycle translation circuit, recycle filter inductance and leakage inductance
Measure simultaneously clamper cycle translation circuit switching tube both end voltage.The circuit is converted with single stage power, wide scope Sofe Switch, leakage inductance energy
Amount recycling, low compressive stress is low, the high-quality advantage of output voltage waveforms.
Detailed description of the invention
Fig. 1 is that three switch push-pulls input High Frequency Link single-stage inverter circuit figure.
Fig. 2 is modulation timing figure.
Fig. 3 is transformer-secondary voltage VEFExperimental waveform and output voltage voExperimental waveform.
From the figure 3, it may be seen that transformer secondary voltage VEFFor three level waveforms of unipolarity, primary side uses three switch push-pull circuits,
Realize unipolarity modulation function.In addition, transformer secondary voltage VEFObtain good clamper, and output voltage voWaveform matter
Amount is fine.
Fig. 4 is cycle translation circuit switching tube S1Switching waveform.As shown in Figure 4, switching tube S1Zero-voltage soft is realized to open
It closes.
Fig. 5 is cycle translation circuit switching tube S2Switching waveform.As shown in Figure 5, switching tube S2Zero-voltage soft is realized to open
It closes.
Specific embodiment
Three switch push-pull of the utility model input High Frequency Link single-stage inverter circuit is further illustrated below.
Three switch push-pulls input High Frequency Link single-stage inverter circuit, see Fig. 1, including three switch push-pull circuits, all wave conversion electricity
Road, active clamp circuit, the first transformer, the second transformer；
The three switch push-pulls circuit includes power supply E, switching tube SP1, switching tube SP2, switching tube SP3；The switching tube
SP1, switching tube SP3, the primary coil of the first transformer, the second transformer primary coil connect cyclization；The one end the power supply E
With switching tube SP2Connection, the other end are connected to switching tube SP1With switching tube SP3Between；Switching tube SP2The other end is connected to the first change
Between the primary coil of depressor and the primary coil of the second transformer；
The active clamp circuit includes switching tube SC1, switching tube SC2, switching tube SC3, switching tube SC4, diode D1, two
Pole pipe D2, capacitor C1, capacitor C2；The switching tube SC1Source electrode and switching tube SC2Drain electrode connection；The switching tube SC3Source
Pole and switching tube SC4Drain electrode connection；Capacitor C1Capacitor C2Connection；The switching tube SC1Drain electrode, switching tube SC3Drain electrode,
Diode D1Cathode and capacitor C1Connection；The switching tube SC2Source electrode, switching tube SC4Source electrode, diode D2Anode and
Capacitor C2Connection；Diode D1Anode, diode D2Cathode connection；
The three switch push-pulls circuit, cycle translation circuit, active clamp circuit are connected by transformer；
The cycle translation circuit includes switching tube S1, switching tube S2, switching tube S3, switching tube S4；The switching tube S1's
Source electrode and switching tube S2Source electrode connect to form two-way switch pipe S1-S2；The switching tube S3Source electrode and switching tube S4Source electrode
Connection forms two-way switch pipe S3-S4；
The transformer includes two primary coils, two secondary coils；One primary coil one end is connected to switching tube
SP1Source electrode and switching tube SP2Drain electrode between, the other end is connected to capacitor CP1With capacitor CP2Between；The secondary of first transformer
Coil, two-way switch pipe S1-S2, two-way switch pipe S3-S4, the second transformer secondary coil be sequentially connected cyclization；Switching tube S2
Drain electrode and switching tube S4Drain electrode connection, and with filter inductance LfOne end connection；Filter inductance LfOther end and filtering
Capacitor CfParallel circuit is formed by with load resistance R to connect；Filter capacitor CfParallel circuit other one is formed by with load R
End is connect with reference；
The secondary coil and switching tube S of first transformer1Drain electrode between with switching tube SC1Source electrode and switching tube SC2's
It is connected between drain electrode, the secondary coil and switching tube S of the second transformer3Drain electrode between with switching tube SC3Source electrode and switching tube
SC4Drain electrode between connect, diode D1Anode and diode D2Cathode between with switching tube S2Drain electrode and switching tube S4
Drain electrode between connect.
The working principle of the circuit, is shown in Fig. 2:
Switching tube SP1、SP2With SP3Three switch push-pull circuits are constituted, cycle translation circuit is by two-way switch pipe S1-S2With S3-
S4It constitutes, clamp circuit is by switching tube SC1~SC4, clamp capacitor C1~C2With diode D1~D2It constitutes.High frequency transformer T primary side
It is double winding with secondary side, E is DC input voitage, voFor output voltage.LfWith CfLow-pass filter is constituted, R is load electricity
Resistance.Primary side switch pipe SP2During disconnection, transformer secondary voltage VGHIt is zero, two-way switch pipe S at this time1-S2With S3-S4It can hand over
Zero voltage switch is realized in folded conducting.
In cycle translation circuit dead time, diode D1With D2Respectively in filter inductance electric current iLBe negative with for timing
Freewheeling path is provided for it.And leakage inductance electric current iLk1And iLk2Then pass through switching tube S respectivelyC1~SC2With SC3~SC4In all wave conversions
Afterflow is realized in circuit dead time.FBAC circuit reality while filter inductance energy and leakage inductance energy are showed and have recycled, has improved and be
System efficiency.Clamping switch tube SC1~SC4With primary side switch pipe SP1~SP2Synchronous working realizes bi-directional energy flow, keeps clamper
Capacitance voltage is stablized.Clamp capacitor recycling energy clamping switch tube conducting during can be transmitted to rapidly DC power supply terminal or
Person's load end.In addition, FBAC eliminates the due to voltage spikes at cycle translation circuit both ends, two-way switch tube voltage stress is reduced, and
Reduce output voltage distortion.Cycle translation circuit both end voltage realizes clamper, this is also opened simultaneously for cycle translation circuit
It closes pipe and realizes that ZVS is created condition.
Claims (1)
1. a kind of three switch push-pulls input High Frequency Link single-stage inverter circuit, it is characterised in that: including three switch push-pull circuits, cycle
Translation circuit, active clamp circuit, the first transformer, the second transformer；
The three switch push-pulls circuit includes power supply E, switching tube SP1, switching tube SP2, switching tube SP3；The switching tube SP1, switch
Pipe SP3, the primary coil of the first transformer, the second transformer primary coil connect cyclization；The one end the power supply E and switching tube
SP2Connection, the other end are connected to switching tube SP1With switching tube SP3Between；Switching tube SP2The other end is connected to the first of the first transformer
Between grade coil and the primary coil of the second transformer；
The active clamp circuit includes switching tube SC1, switching tube SC2, switching tube SC3, switching tube SC4, diode D1, diode
D2, capacitor C1, capacitor C2；The switching tube SC1Source electrode and switching tube SC2Drain electrode connection；The switching tube SC3Source electrode and
Switching tube SC4Drain electrode connection；Capacitor C1With capacitor C2Connection；The switching tube SC1Drain electrode, switching tube SC3Drain electrode, two poles
Pipe D1Cathode and capacitor C1Connection；The switching tube SC2Source electrode, switching tube SC4Source electrode, diode D2Anode and capacitor
C2Connection；Diode D1Anode, diode D2Cathode connection；
The three switch push-pulls circuit, cycle translation circuit, active clamp circuit are connected by transformer；
The cycle translation circuit includes switching tube S1, switching tube S2, switching tube S3, switching tube S4；The switching tube S1Source electrode
With switching tube S2Source electrode connect to form two-way switch pipe S1-S2；The switching tube S3Source electrode and switching tube S4Source electrode connection
Form two-way switch pipe S3-S4；
The transformer includes two primary coils, two secondary coils；One primary coil one end is connected to switching tube SP1's
Source electrode and switching tube SP2Drain electrode between, the other end is connected to capacitor CP1With capacitor CP2Between；The secondary wire of first transformer
Circle, two-way switch pipe S1-S2, two-way switch pipe S3-S4, the second transformer secondary coil be sequentially connected cyclization；Switching tube S2's
Drain electrode and switching tube S4Drain electrode connection, and with filter inductance LfOne end connection；Filter inductance LfOther end and filtered electrical
Hold CfParallel circuit is formed by with load resistance R to connect；Filter capacitor CfParallel circuit other end is formed by with load R
With reference it connect；
The secondary coil and switching tube S of first transformer1Drain electrode between with switching tube SC1Source electrode and switching tube SC2Drain electrode
Between connect, the secondary coil and switching tube S of the second transformer3Drain electrode between with switching tube SC3Source electrode and switching tube SC4's
It is connected between drain electrode, diode D1Anode and diode D2Cathode between drain electrode with switching tube S2 and switching tube S4Leakage
It is connected between pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801615.8U CN208257666U (en) | 2018-05-28 | 2018-05-28 | A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820801615.8U CN208257666U (en) | 2018-05-28 | 2018-05-28 | A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208257666U true CN208257666U (en) | 2018-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820801615.8U Expired - Fee Related CN208257666U (en) | 2018-05-28 | 2018-05-28 | A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit |
Country Status (1)
| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712083A (en) * | 2018-05-28 | 2018-10-26 | 钟曙 | A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit |
| CN110277934A (en) * | 2019-07-16 | 2019-09-24 | 东北大学 | A kind of simply double auxiliary resonance polar form inverter circuits of structure and its modulator approach |
-
2018
- 2018-05-28 CN CN201820801615.8U patent/CN208257666U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712083A (en) * | 2018-05-28 | 2018-10-26 | 钟曙 | A kind of three switch push-pulls input High Frequency Link single-stage inverter circuit |
| CN110277934A (en) * | 2019-07-16 | 2019-09-24 | 东北大学 | A kind of simply double auxiliary resonance polar form inverter circuits of structure and its modulator approach |
| CN110277934B (en) * | 2019-07-16 | 2021-02-26 | 东北大学 | Double-auxiliary resonant-pole inverter circuit with simple structure and modulation method thereof |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20200528 |
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| CF01 | Termination of patent right due to non-payment of annual fee |