CN207304385U - A kind of single-phase X-type misplacement three-level AC stream regulating circuit - Google Patents

A kind of single-phase X-type misplacement three-level AC stream regulating circuit Download PDF

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CN207304385U
CN207304385U CN201720831351.6U CN201720831351U CN207304385U CN 207304385 U CN207304385 U CN 207304385U CN 201720831351 U CN201720831351 U CN 201720831351U CN 207304385 U CN207304385 U CN 207304385U
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capacitance
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inductance
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connection
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李文华
孟喆
张林林
胡琦
郑杭
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Hebei University of Technology
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Hebei University of Technology
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Abstract

A kind of single-phase X-type misplacement three-level AC stream regulating circuit, including main circuit part and switching tube protection part are the utility model is related to, wherein main circuit part includes power supply Ui, inductance Li, inductance Lo, capacitance C1, capacitance C2, capacitance C, IGBT switching tube S1, IGBT switching tubes S2, IGBT switching tubes S3, IGBT switching tubes S4, IGBT switching tubes S5, IGBT switching tubes S6, diode D1~D4, diode D01~D08, resistance R.Switching tube protection portion point includes inductance Lr, capacitance Cr, capacitance CS.Involved component number is less, cost is low, and pressure regulation translation circuit is simple in structure, it is possible to achieve the antiphase voltage of input and output is adjusted, and has the advantages that single stage shift, harmonic wave of output voltage are few, voltage stress is small and output voltage adjustable range is big.

Description

A kind of single-phase X-type misplacement three-level AC stream regulating circuit
Technical field
Power electronics voltage-regulating technique field is the utility model is related to, it is more particularly to a kind of including the anti-of switching tube protection circuit A kind of single-phase X-type misplacement three-level AC stream regulating circuit of phase output.
Background technology
AC voltage adjusting circuit is that AC-input voltage is converted to the adjustable friendship of voltage in a certain range by translation circuit The circuit of galvanic electricity.With the rapid development of Power Electronic Technique, raising of all trades and professions to electrical equipment performance requirement, to voltage Performance requirement it is higher and higher.The electrical equipment of many industries be not directly use power grid offer alternating current as power supply, and It is that power grid alternating current is converted by various regulating circuits, so that the electrical energy form each needed.
CN101039078A discloses a kind of non-isolated direct regulating circuit.CN102185481B and What CN102882389A was told about is from a kind of circuit structure of AC-to DC conversion, be can be only applied in LED illumination circuit.So far Untill the present, research of the domestic and international power electronics researcher for regulating circuit, is concentrated mainly on the indirect conversion of AC-DC-AC With DC-DC variations, the research to AC-AC pressure regulation focuses mostly in the circuit structure of same-phase conversion；More level pressure regulation are become It is also few compared with two level regulating circuits to change the research of circuit, and the research of multi-level circuit is concentrated mainly on multi-electrical level inverter In, the research of regulating circuit is directly converted also than relatively limited for more level AC-AC.There is electricity mostly in the regulating circuit studied The defects of line structure is complicated, output voltage waveforms are of low quality, pressure regulation process is slow.
When realizing the utility model, inventor is had found for the two-tube two-way switch pipe in the circuit, is being not added with buffering Soft switching can be achieved in the case of circuit, but single tube two-way switch pipe is there are the very high peak voltage of a large amount of peak values, and Still there are many peak voltages in the interrupting process of single tube two-way switch pipe in the switching tube such as existing RCD buffer circuit, it is impossible to Realize well it is soft cut-off, this can undoubtedly increase switching loss, reduce the pressure regulation efficiency of circuit.
Utility model content
Technical problem to be solved in the utility model is：A kind of single-phase X-type misplacement three-level AC stream pressure regulation electricity is provided Road, which can realize the directly anti-phase bit map of AC/AC copped waves, mutually wrong using X-type based on DC transfer circuit structure Three level of structure output of formula switching tube, makes regulating circuit have the advantage of three level pressure regulation translation circuits, has circuit structure Simply, single stage shift, harmonic wave of output voltage are few, voltage stress is small and output voltage adjusts the advantages of fast.Meanwhile in circuit Switching tube protection part can realize the soft switching of single tube two-way switch pipe, reduce switching loss.
Technical solution is used by the utility model solves the technical problem：A kind of single-phase X-type misplacement three-level AC Regulating circuit, including main circuit part and switching tube protection part are flowed, wherein main circuit part includes power supply Ui, inductance Li, inductance Lo, capacitance C1, capacitance C2, capacitance C, IGBT switching tube S1, IGBT switching tubes S2, IGBT switching tubes S3, IGBT switching tubes S4、IGBT Switching tube S5, IGBT switching tubes S6, diode D1~D4, diode D01~D08, resistance R.Switching tube protection portion point includes Lr1 (Lr2), capacitance Cr1(Cr2), capacitance CS1(CS2).IGBT switching tubes S1, IGBT switching tubes S2、D1、D2Form two-tube two-way switch pipe； IGBT switching tubes S3, IGBT switching tubes S4、D3、D4Form another two-tube two-way switch pipe；IGBT switching tubes S5、D01~D04Structure Into single tube two-way switch pipe；IGBT switching tubes S6、D05~D08Form another single tube two-way switch pipe.The connection side of above-mentioned device Formula is：Power supply UiOne end and LiOne end connection, LiThe other end and C1、CS1、Lr1One end connection, while and S1Drain electrode, D1Cathode connection, S1Source electrode and S2Source electrode, D2Anode connection, S2Drain electrode and D2Cathode connection, while and Ui's The other end, CS2、Lr2、C2One end connection, Lr1Another termination D01Anode, D03Cathode, D01Cathode and D02Cathode, S5Drain electrode, Cr1One end connection, S5Source electrode and D03Anode, D04Anode, Cr1The other end connection, Lr2The other end Meet D05Anode, D07Cathode, D05Cathode and D06Cathode, S6Drain electrode, Cr2One end connection, S6Source electrode and D07's Anode, D08Anode, Cr2The other end connection, C1The other end and D06Anode, D08Cathode, CS2The other end connection, together When and S3Drain electrode connection, LoOne end connection, C2The other end and D02Anode, D04Cathode, CS2The other end connection, together When and S4Drain electrode connection, S3Drain electrode and D3Cathode connection, S3Source electrode and D3Anode, S4Source electrode connection, S4Source Pole and D4Anode connection, S4Drain electrode and D4Cathode connection, LoThe other end be connected with one end of C, R, the other end of C, R All with S4Drain electrode connection.
A kind of above-mentioned single-phase X-type misplacement three-level AC stream regulating circuit, the operation principle of its main circuit pressure regulation conversion are： According to single-phase three level AC-AC translation circuit input voltages UiPolarity division, pressure regulation translation circuit is divided into (I), (II) two Mode, is divided into four switching modes under each mode again.
Wherein (I) mode is to work as UiDuring ＞ 0, switching tube S2、S4In half period cut-off state, four switching modes are：
Switching mode 1：S5Conducting, remaining shut-off.Power supply UiPass through Ui、Li、D01、S5、D04、C2The circuit of composition is capacitance C2 Charging, capacitance C2Right end is inductance L for justiEnergy storage, and capacitance C1Pass through C1、D01、S5、D04、R、LoThe circuit of composition is Inductance LoWith load R power supplies.The level of ab both ends output at this time is-UC, wherein UCFor C1The voltage at both ends；
Switching mode 2：S1Conducting, remaining shut-off.Power supply UiPass through Ui、Li、S1、D2The circuit of composition is inductance LiEnergy storage, And capacitance C1、C2Pass through C1、S1、D2、C2、R、LoThe circuit of composition is inductance LoWith load R power supplies.The electricity of ab both ends output at this time Put down as -2UC, wherein 2UCFor C1、C2The voltage at both ends；
Switching mode 3：S6Conducting, remaining shut-off.Power supply Ui, inductance LiPass through Ui、Li、C1、D06、S6、D07The circuit of composition For capacitance C1Charging, capacitance C1Left end is just, and capacitance C2Pass through R, Lo、D06、S6、D07The circuit of composition is inductance LoWith load R Power supply.The level of ab both ends output at this time is-UC, wherein UCFor C2The voltage at both ends；
Switching mode 4：S3Conducting, remaining shut-off.Power supply Ui, inductance LiPass through Ui、Li、C1、S3、D4、C2The circuit of composition is Capacitance C1、C2Charging, and inductance LoPass through Lo、S3、D4, R form circuit for load R afterflows.The level of ab both ends output at this time It is zero.
(II) mode is to work as UiDuring ＜ 0, switching tube S1、S3In half period cut-off state, four switching modes are：
Switching mode 1：S6Conducting, remaining shut-off.Power supply UiPass through Ui、D05、S6、D08、C1、LiThe circuit of composition is capacitance C1 Charging, capacitance C1Right end is inductance L for justiEnergy storage, and capacitance C2Pass through C2、D05、S6、D08、Lo, R form circuit be Inductance LoWith load R power supplies.The level of ab both ends output at this time is UC, wherein UCFor C2The voltage at both ends；
Switching mode 2：S2Conducting, remaining shut-off.Power supply UiPass through Ui、S2、D1、LiThe circuit of composition is inductance LiEnergy storage, And capacitance C1、C2Pass through C1、Lo、R、C2、S2、D1The circuit of composition is inductance LoWith load R power supplies.The electricity of ab both ends output at this time Put down as 2UC, wherein 2UCFor C1、C2The voltage at both ends；
Switching mode 3：, S5Conducting, remaining shut-off.Power supply Ui, inductance LiPass through Ui、C2、D02、S5、D03、LiThe circuit of composition For capacitance C2Charging, capacitance C2Left end is just, and capacitance C1Pass through C1、Lo、R、D02、S5、D03The circuit of composition is inductance LoWith it is negative Carry R power supplies.The level of ab both ends output at this time is UC, wherein UCFor C1The voltage at both ends；
Switching mode 4：S4Conducting, remaining shut-off.Power supply Ui, inductance LiPass through Ui、C2、S4、D3、C1、LiThe circuit of composition is Capacitance C1、C2Charging, and inductance LoPass through Lo、R、S4、D3The circuit of composition is load R afterflows.The level of ab both ends output at this time It is zero.
A kind of above-mentioned single-phase X-type misplacement three-level AC stream regulating circuit, output voltage realizes anti-phase with input voltage Bit map.
Above-mentioned a kind of single-phase X-type misplacement three-level AC stream regulating circuit, as long as regulating the 0 of ab output terminals, UC、2UCThree A level ON time, it is possible to realize input and the stepping functions of output voltage freely, and the voltage output at ab ends is Three level forms, belong to multilevel technology, possess that output voltage sine degree is high, voltage stress is small, voltage compared with two level circuits The advantage that harmonic wave is few, aberration rate is low.
Above-mentioned a kind of single-phase X-type misplacement three-level AC stream regulating circuit, in practical applications in order to avoid switching tube quilt Breakdown, switching tube protection circuit used, that is, CLC buffer circuits are a kind of new topological circuits, by inductance Lr, capacitance Cr、CSGroup Into CLC is combined with the fly-wheel diode of single tube two-way switch pipe, it is possible to achieve single tube two-way switch pipe is soft in translation circuit Shut-off, has and reduces peak voltage and voltage stress, slow down the characteristics of switch tube voltage rises rapidly.
A kind of above-mentioned single-phase X-type misplacement three-level AC stream regulating circuit, switching tube protection circuit used, that is, CLC buffering electricity Road, it is straight for exchanges such as other Buck, Boost, Buck-boost mainly for the protection of the single tube two-way switch pipe in main circuit Connect be applied in translation circuit single tube two-way switch pipe circuit it is equally applicable.
A kind of above-mentioned single-phase X-type misplacement three-level AC stream regulating circuit, the operation principle of CLC buffer circuits used are： Switching tube S can be divided into5With switching tube S6Process analysis procedure analysis, analyzed wherein being divided into the opening process of switching tube again with turn off process, Switching tube S5Process analysis procedure analysis it is as follows：1) switching tube S5When opening, because in circuit because of buffer inductance LrWith diode D01Open effect Effect, switching tube S5Realize zero current passing.S5After conducting, capacitance CrBoth end voltage VCrFirst occur to decline change, VCr＜ VCS, Power supply and C at this timesCommon is LrEnergy storage, inductive current iLrIt is gradually increasing, because of capacitance CSPresence, iLrMore than electric current in circuit, V afterwardsCrWith VCSConstantly decline, inductance is gradually restored to circuital current, finally, V with the electric current in switching tubeCr=VCS=0, iLr =iS1=IL, opening process terminates.Converter enters normal operating conditions.2) switching tube S5Shut-off, because buffering capacitance CrVoltage is not The characteristic of mutation, capacitance both end voltage VCrIt is still 0, switching tube realizes zero voltage turn-off.Switching tube S5In electric current iS1Rapidly Decline, but inductive current iLrIt will not decline rapidly, at this time iLrPass through D01、Cr、D03Forming circuit, VCrWith VCSIt is synchronous to rise.When Switching tube S5It is completely switched off, CrVoltage is also raising under the action of power supply and buffering inductive discharge, until rising to UC.Finally, VCr=VCS=UC, iLr=iS1=0, turn off process terminates.Converter enters normal operating conditions.Switching tube S6Open and close Disconnected process and S5It is similar.
Above-mentioned a kind of single-phase X-type misplacement three-level AC stream regulating circuit, wherein involved parts are this technologies The technical staff in field is known and can be commercially available, and the connection of involved parts and installation method are the art Technical staff can grasp.
The marked improvement of the utility model is, compared with prior art, substantive distinguishing features that the utility model protrudes and aobvious It is as follows to write progress：
1) a kind of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model, is a kind of three new level AC- AC regulating circuits, it is possible to achieve input and the anti-phase bit map of output voltage.
2) a kind of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model, has topological simple, voltage stress The advantages that small, single stage shift, it not only realizes the conversion of three level and the wide scope of output voltage is adjusted, and improves circuit Power density and efficiency, also reduce the aberration rate of voltage waveform and the conduction loss of IGBT switching tubes.
3) a kind of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model, in the pattern of pressure regulation translation circuit In switching, only converted every time between two switching tubes, relative to the conduction mode of other more level AC voltage adjusting circuits Between switching it is relatively simple, under each pattern only have a switching tube it is in the conduction state, reduce loss, improve change Efficiency is changed, and in the positive negative cycle of input voltage, two pairs of symmetrical configurations and the symmetrical switching tube of ON time, this becomes for pressure regulation The control drive circuit for changing circuit is provided convenience condition.
4) a kind of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model, using a kind of new switching tube Circuit CLC buffer circuits are protected, reduce the risk that IGBT switching tubes puncture by overvoltage.It is every in the main circuit course of work A operation mode need not set dead time, realize the soft switching of IGBT switching tubes.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is a kind of way circuit topological diagram of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model.
Fig. 2 is that a kind of main circuit course of work of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model is former Reason figure.
Fig. 3 is that a kind of switching tube protection circuit of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model is opened up Flutter figure.
Embodiment
Embodiment illustrated in fig. 1 shows, a kind of total electricity of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model Road topological structure, including AC power Ui, seven capacitance C1、C2、C、Cr1、Cr2、CS1、CS2, four inductance Li、Lo、Lr1、Lr2, six A IGBT switching tubes S1、S2、S3、S4、S5、S6, 12 fast recovery diode D1~D4、D01~D08, a resistance R.Wherein S1、 S2、D1、D2Form two-tube two-way switch pipe, S3、S4、D3、D4Form another two-tube two-way switch pipe, S5、D01~D04Form single Pipe two-way switch pipe, S6、D05~D08Form another single tube two-way switch pipe.The connection mode of above-mentioned device is：Input power UiOne end and LiOne end connection, LiThe other end and C1、CS1、Lr1One end connection, while and S1Drain electrode, D1Cathode Connection, S1Source electrode and S2Source electrode, D2Anode connection, S2Drain electrode and D2Cathode connection, while and UiThe other end, CS2、Lr2、C2One end connection, Lr1The other end and D01Anode, D03Cathode connection, D01Cathode and D02Cathode, S5 Drain electrode, Cr1One end connection, S5Source electrode and D03Anode, D04Anode, Cr1The other end connection, Lr2The other end with D05Anode, D07Cathode connection, D05Cathode and D06Cathode, S6Drain electrode, Cr2One end connection, S6Source electrode and D07 Anode, D08Anode, Cr2The other end connection, C1The other end and D06Anode, D08Cathode, CS2The other end connection, While and S3Drain electrode connection, LoOne end connection, C2The other end and D02Anode, D04Cathode, CS2The other end connection, While and S4Drain electrode connection, S3Drain electrode and D3Cathode connection, S3Source electrode and D3Anode, S4Source electrode connection, S4's Source electrode and D4Anode connection, S4Drain electrode and D4Cathode connection, LoThe other end be connected with one end of C, R, C, R's is another End all with S4Drain electrode connection.The figure example shows that the circuit structure of this tri-level circuit meets Cuk type circuit basic structures, Two single tube two-way switch pipe X-types are mutually wrong in C1、C2Between two capacitances in circuit, component number is less, simple in structure, and exists Symmetrical structure, can realize symmetrical control, control mode is simple in the positive and negative half period of input power.
Embodiment illustrated in fig. 2 shows, a kind of main electricity of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model Road pressure regulation conversion course of work schematic diagram, wherein scheme four switching mode figures when (I) is mode (I), capacitance C under this mode1 Left end is just capacitance C2Right end is just.It is switching mode 1 to scheme (a)：S5Conducting, remaining shut-off.Power supply Ui、Li、D01、S5、D04、C2 The circuit of composition, capacitance C1、D01、S5、D04、R、LoThe circuit of composition.It is switching mode 2 to scheme (b)：S1Conducting, remaining shut-off.Electricity Source Ui、Li、S1、D2The circuit of composition, capacitance C1、S1、D2、C2、R、LoThe circuit of composition.It is switching mode 3 to scheme (c)：S6Conducting, Remaining shut-off.Power supply Ui、Li、C1、D06、S6、D07The circuit of composition, capacitance C2、R、Lo、D06、S6、D07The circuit of composition.Scheme (d) For switching mode 4：S3Conducting, remaining shut-off.Power supply Ui、Li、C1、S3、D4、C2The circuit of composition, inductance Lo、S3、D4, R form Circuit.Scheme four switching modes of (II) when being mode (II), capacitance C under this mode1Right end is just capacitance C2Left end is just.Figure (e) it is switching mode 1：S6Conducting, remaining shut-off.Power supply Ui、D05、S6、D08、C1、LiThe circuit of composition, capacitance C2、D05、S6、 D08、Lo, R form circuit.It is switching mode 2 to scheme (f)：S2Conducting, remaining shut-off.Power supply Ui、S2、D1、LiThe circuit of composition, electricity Hold C1、C2Pass through C1、Lo、R、C2、S2、D1The circuit of composition.It is switching mode 3 to scheme (g)：S5Conducting, remaining shut-off.Power supply Ui、 C2、D02、S5、D03、LiThe circuit of composition, capacitance C1、Lo、R、D02、S5、D03The circuit of composition.It is switching mode 4 to scheme (h)：S4Lead It is logical, remaining shut-off.Power supply Ui、C2、S4、D3、C1、LiThe circuit of composition, inductance Lo、R、S4、D3The circuit of composition.
Embodiment illustrated in fig. 3 shows, a kind of switch of single-phase X-type misplacement three-level AC stream regulating circuit of the utility model Pipe S5、S6CLC buffer protection circuits, include an inductance Lr, two capacitance CS、Cr.Capacitance C in circuitSOne end and inductance LrOne end connects, inductance LrThe other end and D01(D05) anode, D03(D07) cathode connection, D01(D05) cathode connect switching tube S5(S6) drain electrode, D02(D06) cathode, capacitance CrOne end, S5(S6) source electrode meet D03(D07) anode, D04(D08) sun Pole, capacitance CrThe other end, D04(D08) cathode meet D02(D06) anode, capacitance CSThe other end.CLC circuits are double with single tube Diode into switching tube combines, and realizes the zero breaking of switching tube in translation circuit.For other Buck, Boost, Buck- The circuit that single tube two-way switch pipe is applied in the AC direct converting circuits such as boost is equally applicable.

Claims (5)

  1. A kind of 1. single-phase X-type misplacement three-level AC stream regulating circuit, it is characterised in that：Protected including main circuit part and switching tube Part is protected, wherein main circuit part includes power supply Ui, inductance Li, inductance Lo, capacitance C1, capacitance C2, capacitance C, IGBT switching tube S1、 IGBT switching tubes S2, IGBT switching tubes S3, IGBT switching tubes S4, IGBT switching tubes S5, IGBT switching tubes S6, diode D1~D4、 Diode D01~D08；Switching tube protection portion point includes inductance Lr1, inductance Lr2, capacitance Cr1, capacitance Cr2, capacitance CS1, capacitance CS2； The connection mode of above-mentioned device is：Power supply UiOne end and LiOne end connection, LiThe other end and C1、CS1、Lr1One end connect Connect, while and S1Drain electrode, D1Cathode connection, S1Source electrode and S2Source electrode, D2Anode connection, S2Drain electrode and D2The moon Pole connects, while and UiThe other end, CS2、Lr2、C2One end connection, Lr1Another termination D01Anode, D03Cathode, D01 Cathode and D02Cathode, S5Drain electrode, Cr1One end connection, S5Source electrode and D03Anode, D04Anode, Cr1It is another End connection, Lr2Another termination D05Anode, D07Cathode, D05Cathode and D06Cathode, S6Drain electrode, Cr2One end connect Connect, S6Source electrode and D07Anode, D08Anode, Cr2The other end connection, C1The other end and D06Anode, D08Cathode, CS2Other end connection, while and S3Drain electrode connection, LoOne end connection, C2The other end and D02Anode, D04Cathode, CS2Other end connection, while and S4Drain electrode connection, S3Drain electrode and D3Cathode connection, S3Source electrode and D3Anode, S4 Source electrode connection, S4Source electrode and D4Anode connection, S4Drain electrode and D4Cathode connection, LoThe other end and C, R one end Connection, the other end of C, R all with S4Drain electrode connection；Two single tube two-way switch pipe X-types are mutually wrong in C1、C2Circuit between two capacitances In, form circuit structure.
  2. A kind of 2. single-phase X-type misplacement three-level AC stream regulating circuit according to claim 1, it is characterised in that：The electricity Hold C1, capacitance C2Capacitance it is equal.
  3. 3. a kind of single-phase X-type misplacement three-level AC stream regulating circuit according to claim 1, its switching tube protection part CLC buffer circuits are characterized in that：One inductance Lr, two capacitance CS、Cr；Capacitance C in circuitSOne end and inductance LrOne end connects Connect, inductance LrThe other end and D01(D05) anode, D03(D07) cathode connection, D01(D05) cathode meet switching tube S5(S6) Drain electrode, D02(D06) cathode, capacitance CrOne end, S5(S6) source electrode meet D03(D07) anode, D04(D08) anode, capacitance CrThe other end, D04(D08) cathode meet D02(D06) anode, capacitance CSThe other end；CLC buffer circuits and single tube two-way opened The diode closed in pipe is combined, and realizes the zero breaking of switching tube in translation circuit.
  4. A kind of 4. single-phase X-type misplacement three-level AC stream regulating circuit according to claim 1, it is characterised in that：Switching tube Drive circuit uses Infineon's 1ED020I12-F driving chips, and control chip uses dsPIC30f6014A.
  5. A kind of 5. single-phase X-type misplacement three-level AC stream regulating circuit according to claim 1, it is characterised in that：It is divided into (I), (II) two mode, are divided into four switching modes under each mode again；
    Wherein (I) mode is to work as UiDuring ＞ 0, switching tube S2、S4In half period cut-off state, four switching modes are：
    Switching mode 1：S5Conducting, remaining shut-off；Power supply UiPass through Ui、Li、D01、S5、D04、C2The circuit of composition is capacitance C2Fill Electricity, capacitance C2Right end is inductance L for justiEnergy storage, and capacitance C1Pass through C1、D01、S5、D04、R、LoThe circuit of composition is electricity Feel LoWith load R power supplies；The level of ab both ends output at this time is-UC, wherein UCFor C1The voltage at both ends；
    Switching mode 2：S1Conducting, remaining shut-off；Power supply UiPass through Ui、Li、S1、D2The circuit of composition is inductance LiEnergy storage, and capacitance C1、C2Pass through C1、S1、D2、C2、R、LoThe circuit of composition is inductance LoWith load R power supplies；At this time ab both ends output level for- 2UC, wherein 2UCFor C1、C2The voltage at both ends；
    Switching mode 3：S6Conducting, remaining shut-off；Power supply Ui, inductance LiPass through Ui、Li、C1、D06、S6、D07The circuit of composition is electricity Hold C1Charging, capacitance C1Left end is just, and capacitance C2Pass through R, Lo、D06、S6、D07The circuit of composition is inductance LoSupplied with load R Electricity；The level of ab both ends output at this time is-UC, wherein UCFor C2The voltage at both ends；
    Switching mode 4：S3Conducting, remaining shut-off；Power supply Ui, inductance LiPass through Ui、Li、C1、S3、D4、C2The circuit of composition is capacitance C1、C2Charging, and inductance LoPass through Lo、S3、D4, R form circuit for load R afterflows；The level of ab both ends output at this time is zero；
    (II) mode is to work as UiDuring ＜ 0, switching tube S1、S3In half period cut-off state, four switching modes are：
    Switching mode 1：S6Conducting, remaining shut-off；Power supply UiPass through Ui、D05、S6、D08、C1、LiThe circuit of composition is capacitance C1Fill Electricity, capacitance C1Right end is inductance L for justiEnergy storage, and capacitance C2Pass through C2、D05、S6、D08、Lo, R form circuit for electricity Feel LoWith load R power supplies；The level of ab both ends output at this time is UC, wherein UCFor C2The voltage at both ends；
    Switching mode 2：S2Conducting, remaining shut-off；Power supply UiPass through Ui、S2、D1、LiThe circuit of composition is inductance LiEnergy storage, and capacitance C1、C2Pass through C1、Lo、R、C2、S2、D1The circuit of composition is inductance LoWith load R power supplies；At this time ab both ends output level be 2UC, wherein 2UCFor C1、C2The voltage at both ends；
    Switching mode 3：S5Conducting, remaining shut-off；Power supply Ui, inductance LiPass through Ui、C2、D02、S5、D03、LiThe circuit of composition is electricity Hold C2Charging, capacitance C2Left end is just, and capacitance C1Pass through C1、Lo、R、D02、S5、D03The circuit of composition is inductance LoSupplied with load R Electricity；The level of ab both ends output at this time is UC, wherein UCFor C1The voltage at both ends；
    Switching mode 4：S4Conducting, remaining shut-off；Power supply Ui, inductance LiPass through Ui、C2、S4、D3、C1、LiThe circuit of composition is capacitance C1、C2Charging, and inductance LoPass through Lo、R、S4、D3The circuit of composition is load R afterflows；The level of ab both ends output at this time is zero；
    A kind of single-phase X-type misplacement three-level AC stream regulating circuit, realizes input and the reverse pressure regulation of output voltage becomes Change, adjust ab output terminals 0, UC、2UCThree level ON times, can realize the buck work(of input and output voltage freely Energy.
CN201720831351.6U 2017-07-07 2017-07-07 A kind of single-phase X-type misplacement three-level AC stream regulating circuit Active CN207304385U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107147303A (en) * 2017-07-07 2017-09-08 河北工业大学 A kind of single-phase X-type misplacement three-level AC stream regulating circuit
CN110572047A (en) * 2019-08-20 2019-12-13 国网山东省电力公司莱芜供电公司 Alternating three-level alternating current voltage regulation source

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107147303A (en) * 2017-07-07 2017-09-08 河北工业大学 A kind of single-phase X-type misplacement three-level AC stream regulating circuit
CN107147303B (en) * 2017-07-07 2023-10-10 河北工业大学 Single-phase X-shaped staggered three-level alternating current voltage regulating circuit
CN110572047A (en) * 2019-08-20 2019-12-13 国网山东省电力公司莱芜供电公司 Alternating three-level alternating current voltage regulation source

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