CN207743866U - A kind of power converter - Google Patents
A kind of power converter Download PDFInfo
- Publication number
- CN207743866U CN207743866U CN201721613959.8U CN201721613959U CN207743866U CN 207743866 U CN207743866 U CN 207743866U CN 201721613959 U CN201721613959 U CN 201721613959U CN 207743866 U CN207743866 U CN 207743866U
- Authority
- CN
- China
- Prior art keywords
- resonant
- output
- switch
- capacitance
- inductance
- 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.)
- Active
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 is related to a kind of power converters, including an input inductance, a switch, a resonant capacitance, a resonant inductance, a resonant dipole, an output diode and an output capacitance；Input the anode of the first end connection input power of inductance, it inputs the second end of inductance and the first end of switch and the first end of resonant capacitance connects, the anode of the second end of resonant capacitance and the cathode of resonant dipole and output diode connects, the anode of resonant dipole is connect with the first end of resonant inductance, the cathode of output diode and the anode of output capacitance and the first end of output loading connect, and the cathode of input power and the second end of switch, the second end of resonant inductance, the cathode of output capacitance and the second end of output loading connect jointly.
Description
Technical field
The utility model is related to power electronics topological circuit more particularly to a kind of electric power changes with inductance capacitance resonator
Converter circuit.
Background technology
In recent years since environmental problem becomes increasingly conspicuous, the importance of energy-saving and emission-reduction has caused the attention of industry-by-industry.
Various power converters in field of power electronics spread all in daily life electricity consumption facility and industrial equipment, such as laptop
Power supply adaptor, electric car charger and industrial robot.It is apparent that promoting the work energy efficiency of power converter
The dissipation of the energy can be saved in very large range, and then reduces the disposal of pollutants caused by power generation process to help natural environment
Improvement.
The power converter of existing relatively high power is all made of two-layer configuration, i.e. circuit of power factor correction cascades isolation
DC/DC (DC/DC) translation circuit, such as one kind disclosed in utility model patent application No. is 201510271253.7 are filled
Circuit is exactly to use traditional two-stage circuit converter.Traditional two-stage circuit converter needs to open using more semiconductor
The control circuit of pipe (such as MOSFET), diode and complexity is closed, and each electrical device can cause larger energy loss, lead
Cause the efficiency of circuit system universal relatively low and expensive.
Utility model content
The purpose of this utility model is to provide a kind of simple single-stage power converters, reduce main electric power transformation member
The quantity of device simplifies the control difficulty of circuit, reduces system cost and improves the efficiency of power converter.
The technical solution of the utility model is：A kind of power converter, including an input inductance, a switch, one
Resonant capacitance, a resonant inductance, a resonant dipole, an output diode and an output capacitance；Input inductance
First end connects the anode of input power, inputs the second end of inductance and the first end of switch and the first end of resonant capacitance connects
It connects, the second end of resonant capacitance and the anode of the cathode of resonant dipole and output diode connect, the anode of resonant dipole
It is connect with the first end of resonant inductance, the cathode of output diode connects with the anode of output capacitance and the first end of output loading
Connect, the cathode of input power and the second end of switch, the second end of resonant inductance, the cathode of output capacitance and output loading
Two ends connect jointly.
Further, the switch is transistor, and the first end of switch is the collector of transistor, and the second end of switch is
The emitter of transistor；
The switch is IGBT, and the first end of switch is the drain electrode of IGBT, and the second end of switch is the source electrode of IGBT；
Or the switch is MOSFET, the first end of switch is the drain electrode of MOSFET, and the second end of switch is MOSFET
Source electrode.
Further, the operating frequency range of the switch is 10kHz-100MHz.
Further, the resonant dipole and output diode replace with transistor, two poles of resonant dipole and output
The cathode of the just extremely collector of transistor of pipe, resonant dipole and output diode is the emitter of transistor.
Further, in order to reduce resonant inductance inductance value and volume and reduce circuit work caused by harmonic wave, institute
Switch is stated to turn off when resonance current is zero.
Further, the relative position of the resonant inductance and resonant dipole can be interchanged.
The utility model also provides a kind of isolated form power converter circuit, including in the power converter circuit
Input power, input inductance, switch, resonant inductance, resonant dipole, output diode, output capacitance and output loading, are also wrapped
Include primary separation resonant capacitance, secondary separation resonant capacitance and transformer；
The transformer keeps apart the input power and the output loading so that the electricity of transformer primary side and secondary side
Contain different ground wires in road；
The primary circuit is constituted in the following manner：The first end of the first end of the input power and the input inductance
Connection, it is common that the second segment for inputting inductance detaches the first end of resonant capacitance, the first end of the switch with the primary
The second end of connection, the primary separation resonant capacitance is connect with the first end of the transformer primary side winding, the transformer
The second end of primary side winding is connect jointly with the cathode of the second end of the switch, the input power；
The secondary circuit is constituted in the following manner：The first end of the transformer secondary winding detaches humorous with the secondary
It shakes the first end connection of capacitance, cathode with the resonant dipole of the second end of the secondary separation resonant capacitance, output two
The common connection of anode of pole pipe, the anode of the resonant dipole are connect with the first end of the resonant inductance, the output two
The cathode of pole pipe is connect jointly with the output capacitance, the first end of the output loading, the second end of the output capacitance with
The second end of the output loading, the second end of the resonant inductance, the second end of the transformer secondary winding connect jointly.
The utility model also provides a kind of power factor correcting, including alternating current input power supplying, full-bridge rectifier and institute
Input inductance, switch, resonant inductance, resonant capacitance, resonant dipole, output diode in the power converter circuit stated,
Output capacitance and output loading；
The both ends of the alternating current input power supplying are connected respectively to the input terminal of full-bridge rectification diode, the full-bridge rectification two
The output head anode of pole pipe is connected to the first end of the input inductance, the negative pole of output end connection of the full-bridge rectification diode
To the second end of the switch, connection type and any power converter electricity of claim 1-5 of other circuit devcies
Circuit connecting mode in road is identical.
Further, the full-bridge rectifier is made of four diodes；Or the full-bridge rectifier is substituted for by four
The synchronous rectifier that a switching tube is constituted.
The utility model also provides an isolated form power factor correcting, including alternating current input power supplying, full-bridge rectifier,
Transformer, primary separation resonant capacitance, secondary separation resonant capacitance and input inductance in the power converter circuit are opened
Pass, resonant inductance, resonant dipole, output diode, output capacitance and output loading；
The both ends of the alternating current input power supplying are connected respectively to the input terminal of full-bridge rectification diode, the full-bridge rectification two
The output head anode of pole pipe is connected to the first end of the input inductance, the negative pole of output end connection of the full-bridge rectification diode
To the second end of the switch；
It is total that the second end of the input inductance detaches the first end of resonant capacitance, the first end of the switch with the primary
With connection, the second end of the primary separation resonant capacitance is connect with the first end of transformer primary side winding, the transformer primary
The second end of side winding is connect with the second end of the switch；
The first end of transformer secondary winding detaches the first end connection of resonant capacitance, the secondary separation with the secondary
The second end of resonant capacitance is connect jointly with the anode of the cathode of the resonant dipole, output diode, two pole of the resonance
The anode of pipe is connect with the first end of the resonant inductance, the cathode of the output diode and the output capacitance, described defeated
The first end for going out load connects jointly, and the second end of the output capacitance and the second end of the output loading, the resonance are electric
The second end of sense, the second end of the transformer secondary winding connect jointly.
The utility model has the beneficial effects that：The utility model is using inductance capacitance within the time in half of LC resonance period
Realize transformation storage of the energy in resonant capacitance, then these are stored in the energy in resonant capacitance in switch OFF state
Output end is passed in time.The utility model is characterized in that continuous input current, and half of harmonic period interior resonance
Inductance not energy storage.Briefly, in the conduction mode, input inductive current is linearly increasing, and energy is stored in input electricity from input terminal
In sense；Resonant capacitance is discharged by the network that switch, resonant inductance, resonant dipole are constituted simultaneously, completes half of resonance week
After phase, resonant inductance electric current is zeroed again, and the energy in resonant capacitance returns resonant capacitance through resonant inductance, needs to particularly point out
Be resonant inductance electric current zero mean resonant inductance not energy storage.In the shutdown mode, it inputs inductance and resonant capacitance is total
With discharging into output end through output diode to realize transmission of the energy from input terminal to output end.Under steady operation, input
The relationship (i.e. voltage gain) of terminal voltage V1 and output end voltage V2 can be indicated by following formula：
Wherein, D is the duty ratio of switch.Since this circuit framework has larger voltage gain range, on the one hand can answer
For AC/DC circuit of power factor correction, DC/DC booster circuits are can also be used as.
Based on the identical operation principle with the basic circuit framework, the resonant capacitance is split into two resonant capacitances simultaneously
The single-stage power converter circuit of isolated form is constituted with transformer isolation.Under steady operation, the voltage gain of input and output
It can be expressed as：
Wherein, D is the duty ratio of switch, and n is the ratio of the transformer primary side umber of turn N1 and vice-side winding the number of turns N2
Value.It is apparent that the isolated form single-stage power converter circuit can be used as isolation DC/DC lifting/voltage reducing circuits, it is particularly possible to as
The power converter with power factor emendation function of isolation.
The basic circuit framework can have different working conditions in operating mode, in particular input inductive current and
Resonant inductance electric current.Such as input inductive current can start from scratch rising, can also be begun to ramp up from a certain current value；Resonance
Inductive current can be reduced to zero before switch disconnects, and can be reduced to zero at the switch disconnection moment, can also be disconnected in switch
When maintain a certain current value.Above based on the considerations of electric current can with the discontinuous conduction mode (DCM) of conventional electric power converter, face
Boundary's conduction mode (BCM) and continuous conduction mode (CCM) understand to illustrate.The utility model is a kind of single-stage power electronics topology
Circuit, power processing section include an input inductance, a switch, a resonant capacitance, a resonant inductance, a resonance
Diode, an output diode and an output capacitance；The power converter circuit can be derived with it with identical work
Make the isolated form circuit of principle；The isolated form circuit structure is simple, uses small number of Power Processing device, it is only necessary to which one logical
The pulse width modulating signal in road controls, and has large range of voltage gain, can be adapted for the power factor of isolated form
Power converter is corrected, the reliability and efficiency and the cost for reducing system of power converter can be improved.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used does one and simply introduces, it is thus evident that the accompanying drawings in the following description is some embodiments of the utility model, right
For those of ordinary skill in the art, under the premise of not making the creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the basic circuit framework of the utility model embodiment one；
Fig. 2 is circuit diagram of the basic circuit framework of the utility model embodiment one under switch conduction pattern；
Fig. 3 is circuit diagram of the basic circuit framework of the utility model embodiment one under switch OFF pattern；
Fig. 4 is the basic circuit framework steady operation lower switch of the utility model embodiment one and the state signal of diode
Figure；
Fig. 5 is the basic circuit framework steady operation lower switch state of the utility model embodiment one and each loop current wave
Shape figure；
Fig. 6 be the utility model embodiment one basic circuit framework steady operation under different working modes two pole of resonance
Tube current oscillogram；
Fig. 7 is isolated form power converter circuit derived from the basic circuit framework of the utility model embodiment one；
Fig. 8 is the circuit of power factor correction of the utility model embodiment two；
Fig. 9 is the power converter circuit of the power factor emendation function of the isolated form of the utility model embodiment two；
Figure 10 is the Computer Simulation circuit waveform figure of the utility model embodiment two；
Figure 11 is oscillogram of the Computer Simulation circuit of the utility model embodiment two within the scope of tiny time.
Specific implementation mode
In order to clearly describe the thought of the utility model, technical solution and advantage, specific implementation mode passes through reality
Example and attached drawing are applied to show.It is apparent that described embodiment is a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art institute under the premise of not making the creative labor
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is the basic circuit framework of the utility model embodiment one, and the circuit framework includes input power 100, defeated
Enter inductance 101, switch 102, resonant capacitance 103, resonant inductance 104, resonant dipole 105, output diode 106, output electricity
Hold 107, output loading 108.The output loading 108 indicates that both end voltage V2 is output voltage, corresponding with a resistance R1
Ground, 100 both end voltage V1 of the input power are input voltage.The basic circuit framework includes mainly an input electricity
Sense, a switch, a resonant capacitance, a resonant inductance, a resonant dipole, an output diode and an output
Capacitance inputs the anode of the first end connection input power of inductance, inputs the second end of inductance and the first end (drain electrode) of switch
It is connected with the first end of resonant capacitance, the second end of resonant capacitance and the anode of the cathode of resonant dipole and output diode are even
Connect, the anode of resonant dipole is connect with the first end of resonant inductance, the cathode of output diode and output capacitance positive and
The first end of output loading connects, the cathode of input power and the second end (source electrode) of switch, the second end of resonant inductance, output
The cathode of capacitance and the second end of output loading connect jointly.
The switch 102 can be realized by a variety of devices, such as transistor, IGBT, MOSFET etc..The switch 102
Operating frequency range can be 10kHz-100MHz.
The resonant inductance 104 and the relative position of resonant dipole 105 can be interchanged.
The resonant dipole 105 and the output diode 106 can be replaced by switch (such as transistor) and be constituted same
Rectification is walked, has realized turn-on and turn-off function identical with diode.
The resonant capacitance 103 and resonant inductance 104 constitute LC resonance network, and resonant frequency can be true by lower formula
It is fixed,
When the switch 102, which is closed, to be connected, the resonant network starts resonance with given resonant frequency.Resonant network
Including the resonant dipole 105, the resonant dipole 105 only allows unidirectional resonance current.
The basic function of the basic circuit framework is that input voltage V1 is converted to output voltage V2 to reach energy
Transmission.
The operation principle of the basic circuit framework can be divided into accordingly according to the conducting off state of the switch 102
Two kinds of operating modes：The circuit diagram of conduction mode and shutdown mode, described two operating modes corresponds respectively to Fig. 2 and Fig. 3.Institute
State the conducting off state such as Fig. 4 institutes of switch 102, resonant dipole 105 and output diode 106 within a work period
Show, wherein T1 is the turn-on time of the switch 102, and T2 is the turn-off time of the switch 102, and Ts is the basic circuit frame
The time of work period when structure steady operation.The input inductance 101, switch 102, resonant dipole 105 and output
Current waveform of the diode 106 in continuous current steady operation is as shown in Figure 5.
Fig. 2 indicates the circuit diagram when work of one conduction mode of the utility model embodiment.In the switch of the conduction mode
102 are in closed state always, and the voltage at 101 both ends of the input inductance is the input voltage V1, as shown in figure 5, defeated
It is linearly increasing to enter inductive current, the current changing rate can be determined by following formula,
The resonant capacitance 103 is in 105 structure of the resonant capacitance 103, the resonant inductance 104 and the resonant dipole
At resonant network in discharge, the resonance current in the resonant network is theoretically according to sine curve in half of harmonic period
Transformation, after completing half of harmonic period, the resonance current is zeroed, and the charge in the resonant capacitance returns to it certainly
Body, the voltage at the resonant capacitance both ends is by just becoming negative, and theoretically its amplitude is constant, in practice due to resonant capacitance harmony
Parasitic its amplitude of internal resistance equal loss of inductance of shaking can be reduced.In this operating mode, energy is stored into described by input terminal
It inputs in inductance 101, resonant energy is humorous through resonant inductance 104 and 105 half period of resonant dipole from the resonant capacitance 103
It is returned in resonant capacitance 103 after shaking.
Fig. 3 indicates the circuit diagram when work of one shutdown mode of the utility model embodiment.Under shutdown mode work,
The switch 102 is off always, therefore no current flows through in the switch 102.The input power 100, input electricity
Sense 101, resonant capacitance 103, output diode 106 and output capacitance 107 constitute circuit, it is pointed out that the output capacitance
107 is in parallel with the output loading 108, therefore the output loading can also regard the part in the circuit as, but divides to simplify
Analysis, similar with conduction mode, the output load current does not identify in the accompanying drawings.Electric current in the circuit is the input
The electric current of inductance 101 and the output diode 106.Under the shutdown mode, the input inductance 101 and resonance electricity
Hold 103 to discharge through the output diode 106 jointly, as shown in figure 5, energy is harmonious by input power 100, input inductance 101
The capacitance 103 that shakes is transferred to output capacitance 107 and output loading 108.Under steady operation, input terminal voltage V1 and output end voltage
The relationship (i.e. voltage gain) of V2 can be indicated by following formula：
Wherein, D is the duty ratio of switch 102.
Fig. 6 is illustrated in the basic circuit framework of the utility model embodiment one in the conduction mode by the resonance two
Three kinds of different forms of the resonance current of pole pipe 104, i.e., the described resonance current are reduced to zero before the shutdown of the switch 102,
It is reduced to zero at the shutdown moment of the switch 102, and there is certain value when the switch 102 turns off.In order to reduce resonance electricity
Harmonic wave caused by the inductance value and volume of sense 104 and reduction circuit work, the switch 102 preferably should be in resonance current
It is turned off when zero.
Fig. 7 is based on isolated form power converter circuit derived from one basic circuit framework of the utility model embodiment；
The isolated form power converter circuit includes not only input power 100 in basic circuit framework, input inductance 101, switch
102, resonant inductance 104, resonant dipole 105, output diode 106, output capacitance 107 and output loading 108 further include just
Grade separation resonant capacitance 109, secondary separation resonant capacitance 110 and transformer 111.The transformer 111 is by the input power
100 and the output loading 108 keep apart so that transformer primary side and the circuit on secondary side contain different ground wires.The just fraction
From resonant capacitance 109 can by the secondary of 111 equivalent transformation of the transformer to the transformer 111, and with the secondary
It detaches resonant capacitance 110 and constitutes equivalent tank capacitance, the resonant inductance 104 and equivalent tank capacitor resonance.
The primary circuit is constituted in the following manner：The first end of the input power 100 and the input inductance 101
First end connects, and the second end of the input inductance 101 detaches the first end of resonant capacitance 109, the switch with the primary
102 first end (drain electrode) connects jointly, the second end and 111 primary side of the transformer of the primary separation resonant capacitance 109
The first end of winding connects, the second end of 111 primary side winding of the transformer and the second end (source electrode) of the switch 102, institute
The cathode for stating input power 100 connects jointly.The secondary circuit is constituted in the following manner：111 vice-side winding of the transformer
First end the first end connection of resonant capacitance 110, the second end of the secondary separation resonant capacitance 110 are detached with the secondary
It is connect jointly with the anode of the cathode of the resonant dipole 105, output diode 106, the anode of the resonant dipole 105
It is connect with the first end of the resonant inductance 104, it is the cathode of the output diode 106 and the output capacitance 107, described defeated
The first end for going out load 108 connects jointly, the second end of the second end of the output capacitance 107 and the output loading 108, institute
The second end of the second end, 111 vice-side winding of the transformer of stating resonant inductance 105 connects jointly.
The transformer 111 includes primary side winding and vice-side winding.The transformer 111 is in the primary circuit and described
Electrical isolation is provided between secondary circuit.
The operation principle of the isolated form power converter is identical as the operation principle of basic circuit framework.In stable state
Under work, inputting can be expressed as with the voltage gain of output：
Wherein, D is the duty ratio of switch 202, and n is 111 primary side winding the number of turns N1 of the transformer and vice-side winding the number of turns
The ratio of N2.
Embodiment two
Fig. 8 is the circuit of power factor correction that the utility model embodiment two provides；The circuit of power factor correction packet
Include alternating current input power supplying 200, full-bridge rectifier 201 and basic circuit framework 202.The input unit of the circuit of power factor correction
The both ends for being divided into alternating current 200 are connected respectively to the input terminal of full-bridge rectification diode 201, the full-bridge rectification diode 201
Output head anode be connected to the first end of the input inductance, the negative pole of output end of the full-bridge rectification diode is connected to institute
The second end (source electrode) of switch is stated, the connection type of other circuit devcies is identical as circuit connecting mode described in claim 1.
The alternating current input power supplying 200 can be 220V/50Hz household AC alternating currents, can also be other amplitudes and frequency
Alternating current.
The full-bridge rectifier 201 includes four diodes and constitutes full-bridge rectification according to certain way.The full-bridge is whole
Stream device 201 can also be the synchronous rectifier for being replaced four diodes by four switching tubes and being constituted.The full-bridge is whole
Stream device 201, which is converted to the 50Hz alternating voltages accessed from the alternating current input power supplying, contains only unipolar 100Hz alternating currents.
The basic circuit framework 202 is identical as the basic circuit framework described in embodiment one, as shown in Figure 1, wrapping
Include input inductance 101, switch 102, resonant capacitance 103, resonant inductance 104, resonant dipole 105, output diode 106, defeated
Go out capacitance 107 and output loading 108.Since the basic circuit framework has large range of voltage gain, in different inputs
When voltage the voltage gain of system is adjusted by adjusting the duty ratio D of switch 202 to ensure that output voltage is constant certain at certain
It is worth DC voltage, the output definite value DC voltage is more than the maximum value of the input voltage V1, and ensures input current i.e.
Input voltage V1 transformation described in the current following of the input inductance 101, to realize the function of PFC.The work(
Rate factor circuit according to AC-input voltage by control the conduction period T1 and turn-off time interval T2 of the switch come
AC-input voltage and AC input current are modulated, to realize that the AC input current is proportional to the AC-input voltage
And same phase.
Fig. 9 is the isolated form PFC power converter that the utility model embodiment two provides；The electric power becomes
Isolated form power converter circuit 203 described in converter circuit alternating current input power supplying 200, full-bridge rectifier 201 and embodiment one.
The isolated form capability correction power converter from another angle, be by Fig. 8 combinations transformer 111 in embodiment two,
The compound circuit that primary separation resonant capacitance 109 and secondary separation resonant capacitance 110 are constituted.
The basic functional principle of the isolated form PFC power converter and Fig. 7 and institute in the embodiment one
It is identical to state Fig. 8 in embodiment two.And electricity shown in Fig. 7 in the isolated form PFC power converter and embodiment one
Road voltage gain having the same, therefore the isolated form circuit of power factor correction output voltage can be simultaneously by switch 102
Duty ratio and transformer turn ratio determine, this greatly enhances the range of its voltage gain, to which this has also been enlarged
The application range of circuit shown in embodiment Fig. 9.It is apparent that being simply to control the advantages of circuit shown in Fig. 9, i.e., only need one
Pulse width modulation (PWM) signal control in channel and small number of Power Processing device, therefore power converter can be improved
The reliability and efficiency of device and the cost for reducing system.
When the 111 turn ratio n of transformer of circuit shown in Fig. 9, primary separation resonant capacitance 109 and secondary fraction in embodiment two
When being adjusted to corresponding desired value from resonant capacitance 110, the waveform of circuit shown in Fig. 8 and circuit shown in Fig. 9 in the embodiment two
Scheme completely the same.Figure 10 is the Computer Simulation circuit waveform figure of the utility model embodiment two.As shown in Figure 10, the exchange
The current waveform I (V1) of input power 200 is shown follows feature with AC-input voltage, realizes PFC
Function.In order to more clearly observe the circuit work wave, Figure 11 gives the computer in the utility model embodiment two
Oscillogram of the artificial circuit within the scope of tiny time.As shown in figure 11, it is showed by the electric current I (D1) of the resonant dipole
The sinusoidal waveform for going out half period, the work that the power converter circuit is demonstrated together with other signal waveforms in Figure 11 are former
Reason.
Those of ordinary skills in the art should understand that：The foregoing is merely specific embodiment of the utility model
, it is not intended to limit the utility model, it is within the spirit and principle of the utility model, any modification for being made, equivalent
Replace, improve etc., it should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of power converter circuit, it is characterised in that：Including an input inductance, a switch, a resonant capacitance, one
A resonant inductance, a resonant dipole, an output diode and an output capacitance；The first end connection for inputting inductance is defeated
The anode for entering power supply inputs the second end of inductance and the first end of switch and the connection of the first end of resonant capacitance, resonant capacitance
The anode connection of the cathode and output diode of second end and resonant dipole, the anode of resonant dipole and the of resonant inductance
One end connects, and the cathode of output diode and the anode of output capacitance and the first end of output loading connect, and input power is born
The second end of pole and switch, the second end of resonant inductance, the cathode of output capacitance and the second end of output loading connect jointly.
2. a kind of power converter according to claim 1, it is characterised in that：The switch is transistor, the of switch
One end is the collector of transistor, and the second end of switch is the emitter of transistor；
The switch is IGBT, and the first end of switch is the drain electrode of IGBT, and the second end of switch is the source electrode of IGBT；
Or the switch is MOSFET, the first end of switch is the drain electrode of MOSFET, and the second end of switch is the source of MOSFET
Pole.
3. a kind of power converter according to claim 1 or 2, it is characterised in that：The operating frequency range of the switch
For 10kHz-100MHz.
4. a kind of power converter according to claim 1, it is characterised in that：The resonant dipole and output diode
Replace with transistor, the just extremely collector of transistor of resonant dipole and output diode, resonant dipole and output two
The cathode of pole pipe is the emitter of transistor.
5. a kind of power converter according to claim 1, it is characterised in that：The switch is closed when resonance current is zero
It is disconnected.
6. a kind of power converter according to claim 1, it is characterised in that：The resonant inductance and resonant dipole
Relative position can be interchanged.
7. a kind of isolated form power converter, it is characterised in that：Including in any power converters of claim 1-5
Input power, input inductance, switch, resonant inductance, resonant dipole, output diode, output capacitance and output loading, are also wrapped
Include primary separation resonant capacitance, secondary separation resonant capacitance and transformer；
The transformer keeps apart the input power and the output loading so that transformer primary side and the circuit on secondary side contain
There are different ground wires；
The primary circuit is constituted in the following manner：The first end of the input power and the first end of the input inductance connect
It connects, the second end of the input inductance detaches the first end of resonant capacitance with the primary, the first end of the switch connects jointly
It connects, the second end of the primary separation resonant capacitance is connect with the first end of the transformer primary side winding, the transformer primary
The second end of side winding is connect jointly with the cathode of the second end of the switch, the input power；
The secondary circuit is constituted in the following manner：The first end of the transformer secondary winding detaches resonance electricity with the secondary
The first end of appearance connects, cathode, the output diode of the second end and the resonant dipole of the secondary separation resonant capacitance
The common connection of anode, the anode of the resonant dipole connect with the first end of the resonant inductance, the output diode
Cathode connect jointly with the output capacitance, the first end of the output loading, the second end of the output capacitance with it is described
The second end of output loading, the second end of the resonant inductance, the second end of the transformer secondary winding connect jointly.
8. a kind of power factor correcting, it is characterised in that：Including alternating current input power supplying, full-bridge rectifier and claim 1-
Input inductance, switch in 5 any power converter circuits, resonant inductance, resonant capacitance, resonant dipole, output
Diode, output capacitance and output loading；
The both ends of the alternating current input power supplying are connected respectively to the input terminal of full-bridge rectification diode, the full-bridge rectification diode
Output head anode be connected to the first end of the input inductance, the negative pole of output end of the full-bridge rectification diode is connected to institute
State the second end of switch, connection type and the electricity in any power converters of claim 1-5 of other circuit devcies
Road connection type is identical.
9. a kind of power factor correcting according to claim 8, it is characterised in that：The full-bridge rectifier is by four
Diode is constituted；Or the full-bridge rectifier is substituted for the synchronous rectifier being made of four switching tubes.
10. an isolated form power factor correcting, it is characterised in that：Including alternating current input power supplying, full-bridge rectifier, transformation
Input in device, primary separation resonant capacitance, secondary separation resonant capacitance and any power converters of claim 1-5
Inductance, switch, resonant inductance, resonant dipole, output diode, output capacitance and output loading；
The both ends of the alternating current input power supplying are connected respectively to the input terminal of full-bridge rectification diode, the full-bridge rectification diode
Output head anode be connected to the first end of the input inductance, the negative pole of output end of the full-bridge rectification diode is connected to institute
State the second end of switch；
The second end of the input inductance detaches the first end of resonant capacitance with the primary, the first end of the switch connects jointly
Connect, the second end of the primary separation resonant capacitance is connect with the first end of transformer primary side winding, the transformer primary side around
The second end of group is connect with the second end of the switch；
The first end of transformer secondary winding detaches the first end connection of resonant capacitance, the secondary separation resonance with the secondary
The second end of capacitance is connect jointly with the anode of the cathode of the resonant dipole, output diode, the resonant dipole
The positive first end with the resonant inductance is connect, and the cathode of the output diode and the output capacitance, the output are negative
The first end of load connects jointly, the second end of the second end of the output capacitance and the output loading, the resonant inductance
Second end, the second end of the transformer secondary winding connect jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721613959.8U CN207743866U (en) | 2017-11-28 | 2017-11-28 | A kind of power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721613959.8U CN207743866U (en) | 2017-11-28 | 2017-11-28 | A kind of power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207743866U true CN207743866U (en) | 2018-08-17 |
Family
ID=63116102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721613959.8U Active CN207743866U (en) | 2017-11-28 | 2017-11-28 | A kind of power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207743866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023479A (en) * | 2017-11-28 | 2018-05-11 | 李建廷 | A kind of power converter circuit |
-
2017
- 2017-11-28 CN CN201721613959.8U patent/CN207743866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023479A (en) * | 2017-11-28 | 2018-05-11 | 李建廷 | A kind of power converter circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108448913B (en) | Single-stage isolated AC-DC converter based on staggered parallel bridgeless PFC circuit and LLC resonance | |
| Cheng et al. | A novel single-stage high-power-factor AC/DC converter featuring high circuit efficiency | |
| WO2023098826A1 (en) | Control method, controller, and converter for resonant dual-active bridge conversion circuit | |
| CN108988676B (en) | Single-stage isolated bidirectional AC-DC converter | |
| CN109921653B (en) | Single-phase power electronic transformer topological structure and control method thereof | |
| CN108235509B (en) | A kind of single-stage LED drive circuit of integrated decompression Cuk and LLC circuit | |
| CN103269164B (en) | The quasi-single-stage high power factor circuit of former limit current constant control and device | |
| CN109742965A (en) | A kind of high-frequency isolation type AC-DC converter of single-phase crisscross parallel three level resonance formula | |
| WO2023098216A1 (en) | Input-energy-storage-inductor-free isolated resonant soft switching type three-phase pfc converter and control method therefor | |
| CN108736756B (en) | Improved double-auxiliary resonant-pole three-phase soft switching inverter circuit | |
| CN108183603A (en) | A kind of single-stage is without bridge Sofe Switch resonance isolated form circuit of power factor correction | |
| WO2021031792A1 (en) | Tlc resonance circuit, and power converter applying same | |
| CN110649802B (en) | Correction method of single-stage resonant AC-DC power factor correction conversion device | |
| CN105576980A (en) | Current feed converter | |
| CN102412740B (en) | Multiphase AC-DC (alternating current-direct current) isolating conversion circuit and multiphase AC-DC power supply | |
| CN108023479A (en) | A kind of power converter circuit | |
| CN207743866U (en) | A kind of power converter | |
| CN204858973U (en) | Isolation feedback supply circuit of LLC resonant transformation ware | |
| CN107482922A (en) | A kind of two-way LLC resonant converter based on switching switch | |
| CN206283411U (en) | A kind of single-stage isolated circuit of power factor correction | |
| CN108966418A (en) | A kind of multiple constant current LED drive power based on high-frequency ac square wave bus | |
| CN204906192U (en) | Boost module is recommended to wide region full cut -off ring high efficiency | |
| CN203326884U (en) | Primary-side constant-current control quasi-single-stage high-power-factor circuit and device | |
| CN207691687U (en) | A kind of half-bridge LC resonance translation circuit based on PWM controls | |
| CN201726326U (en) | Half-bridge soft switching power source with passive power factor correcting circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Jianting Inventor before: Li Jianke Inventor before: Li Jianting |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201015 Address after: 200120 Shanghai City, Pudong New Area Chinese (Shanghai) free trade zone fanchun Road No. 400 Building 1 layer 3 Patentee after: Feipin Technology (Shanghai) Co.,Ltd. Address before: 210007 Jiangsu Nanjing Qinhuai District Hai Fu Lane 1 power station Patentee before: Li Jianting |
|
| TR01 | Transfer of patent right |