CN106655832A - Single-phase optical-coupler current-double voltage reduction rectifier with current expansion structure - Google Patents

Single-phase optical-coupler current-double voltage reduction rectifier with current expansion structure Download PDF

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Publication number
CN106655832A
CN106655832A CN201710144754.8A CN201710144754A CN106655832A CN 106655832 A CN106655832 A CN 106655832A CN 201710144754 A CN201710144754 A CN 201710144754A CN 106655832 A CN106655832 A CN 106655832A
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China
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input end
circuit module
triode
photoelectrical coupler
end mouth
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CN201710144754.8A
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Chinese (zh)
Inventor
廖无限
肖强晖
戴启
廖晓宇
肖雅文
张健
湛政
任于涵
胡正国
易椠椠
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Hunan University of Technology
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Hunan University of Technology
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/23—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

The invention discloses a single-phase optical-coupler current-double voltage reduction rectifier with a current expansion structure. The rectifier comprises a main circuit module and a control circuit module, the main circuit module comprises two alternating-current input ports, two direct-current output ports and a main circuit, and the control circuit module comprises two synchronous input ports and a control circuit. The rectifier is simple in design, reasonable in structure and convenient to construct. Compared with a traditional current-double rectifier, the single-phase optical-coupler current-double voltage reduction rectifier has advantages that addition of a step-down transformer for voltage reduction at an input end is avoided, the rectifier is suitable for regular square waves and alternating-current and direct-current power supply conversion of sine waves, triangular waves, sawtooth waves and the like and is capable of directly realizing power supply output power amplification, a single-phase rectification function and a current-expansion rectification function are both realized, and output voltage ripple waves can be reduced.

Description

Expand the single-phase optocoupler times flow pattern buck rectifier of flow structure
Technical field
The present invention relates to flow pattern rectifier again, is a kind of single-phase optocoupler times flow pattern for being related to expand flow structure more specifically Buck rectifier.
Background technology
Currently, it is used in traditional current doubler rectifier in high-frequency rectification field more, compared with full-wave rectifying circuit, times stream rectification The vice-side winding of the high frequency transformer of device only needs a single winding, without centre cap；Compared with full bridge rectifier, times stream The few half of number of diodes that rectification circuit is used.Therefore, current-doubling rectifier combines full-wave rectifying circuit and full-bridge rectification The advantage of both circuits.Certainly, current-doubling rectifier will use an output inductor, structure slightly complicated more.But this electricity The operating frequency of sense and conveying electric current are the half of inductance used by full-wave rectifying circuit, thus can be made it is less, also beneficial to dissipating Heat, additionally it is possible to reduce and improve the ripple of output voltage.But traditional some problems of the current doubler rectifier person of there is also need into one Step is solved：
（1）Traditional current doubler rectifier is suitable only for high-frequency rectification circuit, and its ac input end needs to provide the symmetrical positive and negative side of high frequency Ripple power supply, is generally unsuitable for the ac input end power supply of the other forms such as sine wave, triangular wave, sawtooth waveforms；
（2）The device that traditional current doubler rectifier inside uses is difficult to expand output current once solidifying, and is not easy to direct reality Now expand output power of power supply.
The content of the invention
In view of this, the present invention is intended to provide a kind of single-phase optocoupler times flow pattern buck rectifier for expanding stream, can overcome biography The defect that system current doubler rectifier is present.
Traditional current doubler rectifier generally will increase step-down and become to realize the function that step-down rectifier is exported in ac input end Depressor is matched therewith, and the primary conductive pathway of every half work period is brought out from the one of the secondary side of step-down transformer Send out, Jing inductance, output loading, one of diode return the other end of the secondary side of step-down transformer, now conform to the principle of simplicity From the point of view of in the quantitative relationship of change, output voltage is equal to the pressure that the AC-input voltage of the secondary side of step-down transformer is deducted on inductance Drop and the pressure drop of diode, but the linear zone of diode is narrower, it operates mainly in switch region, because diode pressure drop very It is little, if ignoring the pressure drop of diode, it is believed that it is secondary that the main output voltage of every half work period is equal to step-down transformer The AC-input voltage of side deducts pressure drop on inductance.If the photoelectrical coupler that diode is substituted for linear zone wider range is defeated Go out part and constitute the multiple tube of a darlington structure with triode, while rejecting step-down transformer, then current doubler rectifier is main Output voltage deducts the pressure drop on inductance equal to AC-input voltage, then deducts the pressure between photoelectrical coupler output par, c port Drop, it is also possible to realize the step-down rectifier output of current doubler rectifier.
In order to realize the purpose of foregoing invention, the concrete offer of the present invention is applied to the single-phase optocoupler times flow pattern drop for expanding flow structure Pressure rectifier technical scheme be：Including main circuit module and control circuit module two large divisions.
（1）Described main circuit module includes two ac input end mouths, two direct current output ports and a main circuits, Two of which ac input end mouth is respectively ac input end mouth ACH-in1With ac input end mouth ACH-in2, two direct current outputs Port is respectively direct current output port DCOUT+With direct current output port DCOUT-, further, main circuit again by inductance L1, inductance L2, Photoelectrical coupler U1 output par, cs, triode T1, photoelectrical coupler U2 output par, cs and triode T2 composition, wherein photoelectric coupling Device U1 output par, cs constitute the multiple tube of a darlington structure, the i.e. transmitting of photoelectrical coupler U1 output par, cs with triode T1 Pole is connected with the base stage of triode T1, and the colelctor electrode of photoelectrical coupler U1 output par, cs is connected with the colelctor electrode of triode T1, and Photoelectrical coupler U2 output par, cs constitute the multiple tube of another darlington structure, i.e. photoelectrical coupler U2 outputs with triode T2 Partial emitter stage is connected with the base stage of triode T2, the colelctor electrode of photoelectrical coupler U2 output par, cs and the current collection of triode T2 Extremely it is connected, ac input end mouth ACH-in1Emitter stage, one end of inductance L2 with triode T2 is connected, the other end of inductance L2 with Direct current output port DCOUT+, inductance L1 one end be connected, the other end of inductance L1 and the emitter stage of triode T1, exchange input Port ACH-in2It is connected, the colelctor electrode of triode T1 and the colelctor electrode of triode T2, direct current output port DCOUT-It is connected；
（2）Described control circuit module includes two ac input end mouths and a control circuit, two of which exchange input Port is respectively ac input end mouth ACL-in1With ac input end mouth ACL-in2, further, control circuit is again by resistance R1, electricity Resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouth ACL-in1With resistance R1 One end be connected with one end of resistance R2, ac input end mouth ACL-in2Diode cathode with photoelectrical coupler U1 importations, The diode anode of photoelectrical coupler U2 importations is connected, the other end of resistance R1 and the two of photoelectrical coupler U1 importations Pole pipe anode is connected, and the other end of resistance R2 is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouth AC of main circuit moduleH-in1, control circuit module ac input end mouth ACL-in1With it is external Exchange input bus Line1 is connected, the ac input end mouth AC of main circuit moduleH-in2, control circuit module ac input end Mouth ACL-in2It is connected with the external input bus Line2 that exchanges, the direct current output port DC of main circuit moduleOUT+With direct current output Port DCOUT-Between be used for external load RL；
（4）Exchange input bus Line1 and exchange input bus Line2 between operating voltage cycle be divided into positive half period and Negative half-cycle two large divisions：
When positive half period is operated in, described control circuit module only has a guiding path, and described main circuit module has Two guiding paths, the guiding path of wherein control circuit module is the external exchange input bus Line1 of Jing electric up to control The ac input end mouth AC of road moduleL-in1, resistance R1, photoelectrical coupler U1 importations and ac input end mouth ACL-in2, then To external exchange input bus Line2；And first guiding path of main circuit module is the external exchange input bus of Jing Line1 is until the ac input end mouth AC of main circuit moduleH-in1, inductance L2, direct current output port DCOUT+, it is external load RL, straight Stream output port DCOUT-, photoelectrical coupler U1 output par, cs and triode T1 constitute the multiple tube of darlington structure and exchange defeated Inbound port ACH-in2, then to external exchange input bus Line2；The Article 2 guiding path of main circuit module, mainly by electricity L1 is in previous negative half-cycle for sense, the continuous current circuit formed Jing after energy storage, i.e., from inductance L1, through direct current output port DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U1 output par, cs and triode T1 composition Darlington knots The multiple tube of structure, returns inductance L1；
When negative half-cycle is operated in, now described control circuit module also only has a guiding path, described main circuit Module also has two guiding paths, and the guiding path of wherein control circuit module is that the external exchange input bus Line2 of Jing are straight To the ac input end mouth AC of control circuit moduleL-in2, photoelectrical coupler U2 importations, resistance R2 and ac input end mouth ACL-in1, then to external exchange input bus Line1；And first guiding path of main circuit module is the external exchanges of Jing Input bus Line2 is until the ac input end mouth AC of main circuit moduleH-in2, inductance L1, direct current output port DCOUT+, it is external Load RL, direct current output port DCOUT-, photoelectrical coupler U2 output par, cs and triode T2 constitute the multiple tube of darlington structure With ac input end mouth ACH-in1, then to external exchange input bus Line1；The Article 2 guiding path of main circuit module, it is main If by inductance L2 in previous positive half period, the continuous current circuit formed Jing after energy storage, i.e., from inductance L2, through direct current Output port DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U2 output par, cs and triode T2 groups Into the multiple tube of darlington structure, inductance L2 is returned；In a word, positive half period or negative half-cycle, direct current are either operated in Output port DCOUT+Voltage be higher than direct current output port DCOUT-Voltage, period benefits from inductance L1 and inductance L2 energy storage again With the effect of afterflow, single-phase rectifier function is not only realized, also achieve expansion stream rectification function, and also can be reduced and improve The ripple of output voltage.
The invention has the beneficial effects as follows, there is provided a kind of single-phase optocoupler times flow pattern buck rectifier for expanding flow structure, with setting Meter is simple, rational in infrastructure, build convenient characteristic, compared with traditional current doubler rectifier, without the need for increasing downconverter in input Device is depressured, and is not only suitable for conventional square wave, and suitable for the conversion of the powers of alterating and direct current such as sine wave, triangular wave, sawtooth waveforms, and And expansion output power of power supply can be directly realized by, and single-phase rectifier function is not only realized, expansion stream rectification function is also achieved, and And can also reduce the ripple of output voltage.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme, below will be in embodiment or technical scheme description The required accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only the more typical reality of the present invention The explanation of a structure composition or circuit diagram is applied, for those skilled in the art, on the premise of not paying creative work, Can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a kind of canonical schema of traditional current doubler rectifier.
Fig. 2 is a kind of canonical schema of single-phase optocoupler times flow pattern buck rectifier for expanding flow structure.
Fig. 3 is that the single-phase optocoupler times flow pattern buck rectifier for expanding flow structure is operated in positive half period guiding path schematic diagram.
Fig. 4 is that the single-phase optocoupler times flow pattern buck rectifier for expanding flow structure is operated in negative half-cycle guiding path schematic diagram.
Specific embodiment
To make purpose, technical scheme and the advantage of present example clearer, below in conjunction with present example Accompanying drawing, is clearly and completely described, it is clear that described example is only to the technology of the present invention composition, technical scheme and embodiment Only it is a part of example of the present invention, rather than the example of whole.Based on the example in the present invention, those of ordinary skill in the art Other examples obtained under the premise of creative work is not made, belong to the scope of protection of the invention.
In conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figure 1, it is a kind of canonical schema of traditional current doubler rectifier.Traditional current doubler rectifier is to realize step-down The function of rectification output, generally will increase step-down transformer and be matched therewith in ac input end, every half work period Primary conductive pathway is one end of the secondary side from step-down transformer, Jing inductance, output loading, one of those two pole Pipe, returns the other end of the secondary side of step-down transformer, and now in simplified quantitative relationship, output voltage is equal to drop The AC-input voltage of the secondary side of pressure transformer deducts the pressure drop of the pressure drop on inductance and diode, but diode is linear Area is narrower, and it operates mainly in switch region, because of the pressure drop very little of diode, if ignoring the pressure drop of diode, it is believed that per half The main output voltage of individual work period is equal to the AC-input voltage of step-down transformer secondary side and deducts pressure drop on inductance.In addition There is a continuous current circuit every half work period, additionally it is possible to reduce and improve the ripple of output voltage.
As shown in Figure 2, it is a kind of canonical schema of single-phase optocoupler times flow pattern buck rectifier for expanding flow structure, including master Circuit module and control circuit module two large divisions；
（1）Described main circuit module includes two ac input end mouths, two direct current output ports and a main circuits, wherein Two ac input end mouths are respectively ac input end mouth ACH-in1With ac input end mouth ACH-in2, two direct current output ports Respectively direct current output port DCOUT+With direct current output port DCOUT-, further, main circuit is again by inductance L1, inductance L2, photoelectricity Coupler U1 output par, cs, triode T1, photoelectrical coupler U2 output par, cs and triode T2 composition, wherein photoelectrical coupler U1 Output par, c and triode T1 constitute the multiple tube of a darlington structure, the i.e. emitter stage of photoelectrical coupler U1 output par, cs with The base stage of triode T1 is connected, and the colelctor electrode of photoelectrical coupler U1 output par, cs is connected with the colelctor electrode of triode T1, and photoelectricity Coupler U2 output par, cs constitute the multiple tube of another darlington structure, i.e. photoelectrical coupler U2 output par, cs with triode T2 Emitter stage be connected with the base stage of triode T2, the colelctor electrode of photoelectrical coupler U2 output par, cs and the colelctor electrode phase of triode T2 Even, ac input end mouth ACH-in1Emitter stage, one end of inductance L2 with triode T2 is connected, the other end and direct current of inductance L2 Output port DCOUT+, inductance L1 one end be connected, the other end of inductance L1 and the emitter stage of triode T1, ac input end mouth ACH-in2It is connected, the colelctor electrode of triode T1 and the colelctor electrode of triode T2, direct current output port DCOUT-It is connected；
（2）Described control circuit module includes two ac input end mouths and a control circuit, two of which exchange input Port is respectively ac input end mouth ACL-in1With ac input end mouth ACL-in2, further, control circuit is again by resistance R1, electricity Resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouth ACL-in1With resistance R1 One end be connected with one end of resistance R2, ac input end mouth ACL-in2Negative electrode, light thermocouple with photoelectrical coupler U1 importations The anode of clutch U2 importation is connected, the other end of resistance R1 and the diode anode phase of photoelectrical coupler U1 importations Even, the other end of resistance R2 is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouth AC of main circuit moduleH-in1, control circuit module ac input end mouth ACL-in1With it is external Exchange input bus Line1 is connected, the ac input end mouth AC of main circuit moduleH-in2, control circuit module ac input end Mouth ACL-in2It is connected with the external input bus Line2 that exchanges, the direct current output port DC of main circuit moduleOUT+With direct current output Port DCOUT-Between be used for external load RL.
The cycle of operating voltage between exchange input bus Line1 and exchange input bus Line2 is divided into positive half period With negative half-cycle two large divisions.
As shown in Figure 3, it is that the single-phase optocoupler times flow pattern buck rectifier for expanding flow structure is operated in positive half period guiding path Footpath schematic diagram, when positive half period is operated in, described control circuit module only has a guiding path, described main circuit mould Block has two guiding paths, and the guiding path of wherein control circuit module is the external exchange input bus Line1 of Jing until control The ac input end mouth AC of circuit module processedL-in1, resistance R1, photoelectrical coupler U1 importations and ac input end mouth ACL-in2, then to external exchange input bus Line2；And first guiding path of main circuit module is the external exchanges of Jing Input bus Line1 is until the ac input end mouth AC of main circuit moduleH-in1, inductance L2, direct current output port DCOUT+, it is external Load RL, direct current output port DCOUT-, photoelectrical coupler U1 output par, cs and triode T1 constitute the multiple tube of darlington structure With ac input end mouth ACH-in2, then to external exchange input bus Line2；The Article 2 guiding path of main circuit module, it is main If by inductance L1 in previous negative half-cycle, the continuous current circuit formed Jing after energy storage, i.e., from inductance L1, through direct current Output port DCOUT+, external load RL, direct current output port DCOUT-Constitute with photoelectrical coupler U1 output par, cs and triode T1 The multiple tube of darlington structure, returns inductance L1.
As shown in Figure 4, it is that the single-phase optocoupler times flow pattern buck rectifier for expanding flow structure is operated in negative half-cycle guiding path Footpath schematic diagram, when negative half-cycle is operated in, now described control circuit module also only has a guiding path, described master Circuit module also has two guiding paths, and the guiding path of wherein control circuit module is the external exchange input bus of Jing Line2 is until the ac input end mouth AC of control circuit moduleL-in2, photoelectrical coupler U2 importations, resistance R2 with exchange defeated Inbound port ACL-in1, then to external exchange input bus Line1；And first guiding path of main circuit module is Jing external Exchange input bus Line2 until main circuit module ac input end mouth ACH-in2, inductance L1, direct current output port DCOUT+, external load RL, direct current output port DCOUT-, photoelectrical coupler U2 output par, cs and triode T2 composition Darlington knot The multiple tube and ac input end mouth AC of structureH-in1, then to external exchange input bus Line1；The Article 2 of main circuit module Guiding path, mainly by inductance L2 in previous positive half period, the continuous current circuit formed Jing after energy storage goes out from inductance L2 Send out, through direct current output port DCOUT+, external load RL, direct current output port DCOUT-With photoelectrical coupler U2 output par, cs Multiple tube with triode T2 constitutes darlington structure, returns inductance L2；In a word, either it is operated in positive half period still to bear Half period, direct current output port DCOUT+Voltage be higher than direct current output port DCOUT-Voltage, period benefit from again inductance L1 and Inductance L2 energy storage and the effect of afterflow, not only realize single-phase rectifier function, also achieve expansion stream rectification function, and also can Reduce and improve the ripple of output voltage.
The above, is only presently preferred embodiments of the present invention, and any pro forma restriction is not made to the present invention.If If carrying out various changes and modifications to embodiment of the present invention, but still within the spirit and principles in the present invention, should be included in Within the claims of the present invention.

Claims (1)

1. the single-phase optocoupler times flow pattern buck rectifier of flow structure, including main circuit module and the big portion of control circuit module two are expanded Point, it is characterized in that：
（1）Described main circuit module includes two ac input end mouths, two direct current output ports and a main circuits, wherein Two ac input end mouths are respectively ac input end mouth ACH-in1With ac input end mouth ACH-in2, two direct current output ports Respectively direct current output port DCOUT+With direct current output port DCOUT-, further, main circuit is again by inductance L1, inductance L2, photoelectricity Coupler U1 output par, cs, triode T1, photoelectrical coupler U2 output par, cs and triode T2 composition, wherein photoelectrical coupler U1 Output par, c and triode T1 constitute the multiple tube of a darlington structure, the i.e. emitter stage of photoelectrical coupler U1 output par, cs with The base stage of triode T1 is connected, and the colelctor electrode of photoelectrical coupler U1 output par, cs is connected with the colelctor electrode of triode T1, and photoelectricity Coupler U2 output par, cs constitute the multiple tube of another darlington structure, i.e. photoelectrical coupler U2 output par, cs with triode T2 Emitter stage be connected with the base stage of triode T2, the colelctor electrode of photoelectrical coupler U2 output par, cs and the colelctor electrode phase of triode T2 Even, ac input end mouth ACH-in1Emitter stage, one end of inductance L2 with triode T2 is connected, the other end and direct current of inductance L2 Output port DCOUT+, inductance L1 one end be connected, the other end of inductance L1 and the emitter stage of triode T1, ac input end mouth ACH-in2It is connected, the colelctor electrode of triode T1 and the colelctor electrode of triode T2, direct current output port DCOUT-It is connected；
（2）Described control circuit module includes two ac input end mouths and a control circuit, two of which exchange input Port is respectively ac input end mouth ACL-in1With ac input end mouth ACL-in2, further, control circuit is again by resistance R1, electricity Resistance R2, photoelectrical coupler U1 importations and photoelectrical coupler U2 importations composition, ac input end mouth ACL-in1With resistance R1 One end be connected with one end of resistance R2, ac input end mouth ACL-in2Diode cathode with photoelectrical coupler U1 importations, The diode anode of photoelectrical coupler U2 importations is connected, the other end of resistance R1 and the two of photoelectrical coupler U1 importations Pole pipe anode is connected, and the other end of resistance R2 is connected with the diode cathode of photoelectrical coupler U2 importations；
（3）The ac input end mouth AC of main circuit moduleH-in1, control circuit module ac input end mouth ACL-in1With it is external Exchange input bus Line1 is connected, the ac input end mouth AC of main circuit moduleH-in2, control circuit module ac input end Mouth ACL-in2It is connected with the external input bus Line2 that exchanges, the direct current output port DC of main circuit moduleOUT+With direct current output Port DCOUT-Between be used for external load RL.
CN201710144754.8A 2017-03-13 2017-03-13 Single-phase optical-coupler current-double voltage reduction rectifier with current expansion structure Pending CN106655832A (en)

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US11259413B2 (en) 2018-04-05 2022-02-22 Abb Power Electronics Inc. Inductively balanced power supply circuit and method of manufacture

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