CN104201882A - Non-isolated voltage-stabilization current-sharing circuit and power supply system - Google Patents

Non-isolated voltage-stabilization current-sharing circuit and power supply system Download PDF

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Publication number
CN104201882A
CN104201882A CN201410415311.4A CN201410415311A CN104201882A CN 104201882 A CN104201882 A CN 104201882A CN 201410415311 A CN201410415311 A CN 201410415311A CN 104201882 A CN104201882 A CN 104201882A
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China
Prior art keywords
current
voltage stabilizing
output
sharing unit
switching tube
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CN201410415311.4A
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CN104201882B (en
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徐建生
莫少勇
张振兴
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Changzhou Hengtang Technology Industry Co ltd
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Huawei Technologies Co Ltd
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Priority to CN201410415311.4A priority Critical patent/CN104201882B/en
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Priority to PCT/CN2015/070134 priority patent/WO2016026260A1/en
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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention belongs to the technical field of power supply and discloses a non-isolated voltage-stabilization current-sharing circuit and a power supply system. In the non-isolated voltage-stabilization current-sharing circuit, direct current output by a first inductor and loop current output by load are respectively output to the load and a second inductor under subsequent flow through a first voltage-stabilization current-sharing unit, so that the value of the direct current output by the second inductor is equal to that of the direct current accessed into the first inductor, a voltage sampling unit and a current sampling unit are respectively used to sample voltage output by the first voltage-stabilization current-sharing unit and loop current output by the load and to feed voltage sampling signals and current sampling signals to a first controller, the first voltage-stabilization current-sharing unit is driven to the output voltage and current of the non-isolated voltage-stabilization current-sharing circuit by the first controller, so that steady output voltage and current can be maintained without limit of input voltage difference and the power supply efficiency is also improved.

Description

A kind of non-isolation voltage stabilizing flow equalizing circuit and electric power system
Technical field
The invention belongs to power supply technique field, relate in particular to a kind of non-isolation voltage stabilizing flow equalizing circuit and electric power system.
Background technology
At present, along with the upgrading of communication equipment, its power demand is increasing, so the input current of communication equipment also needs correspondingly to increase.In order to meet the large electric current demand of communication equipment, in communications equipment room, normally adopt the use in parallel of multiple-way supply circuit to form electric resources pond, and to the electric current in multiple-way supply circuit close road conflux process after export communication equipment to, to realize flexible distribution for different communication equipments.And in the time of the use in parallel of multiple-way supply circuit, a solution that prior art provides be the electric current in multiple-way supply circuit is closed road conflux process time, by connecting in each supply line, an impedance adjustment circuit is adjusted processing to electric current, in this impedance adjustment circuit, comprise a variable resistor, it is adjusted this variable-resistance resistance according to the electric current in supply line, to reach the object of balanced feeding line impedance, thereby the electric current of Shi Ge supply line preserves the stable equilibrium; This impedance adjustment circuit is in the time that the input pressure reduction of supply line is large, and heating loss also can become greatly, and temperature can corresponding rising, and part electric energy can be converted to heat energy, and power supplying efficiency is lower.
Summary of the invention
The object of the present invention is to provide a kind of non-isolation voltage stabilizing flow equalizing circuit, be intended to solve prior art low problem of existing power supplying efficiency in the time that supply line is realized to current balance type.
The present invention is achieved in that a kind of non-isolation voltage stabilizing flow equalizing circuit, comprises the first controller, and described non-isolation voltage stabilizing flow equalizing circuit also comprises:
The first inductance, the second inductance, the first voltage stabilizing current-sharing unit, voltage sample unit and current sampling unit;
The first end of described the first inductance accesses the first direct current, the first end of described the second inductance is exported the second direct current, the second end of described the first inductance and the second end of described the second inductance are connected respectively first input end and second input of described the first voltage stabilizing current-sharing unit, the output of described the first voltage stabilizing current-sharing unit is exported direct current to load, the input of described voltage sample unit and output are connected respectively output and described first controller of described the first voltage stabilizing current-sharing unit, the first sampling end of described current sampling unit receives the loop current of load output, the second sampling end of described current sampling unit and output are connected respectively loop end and described first controller of described the first voltage stabilizing current-sharing unit, described the first controller is also connected with the direct current regulation and control end of described the first voltage stabilizing current-sharing unit,
Described the first inductance carries out exporting described the first voltage stabilizing current-sharing unit to after energy storage to described the first direct current, the direct current afterflow that described the first inductance is exported in described the first voltage stabilizing current-sharing unit exports described load to, the loop current that described load is exported exports described the second inductance to through described the first voltage stabilizing current-sharing unit afterflow, described the second inductance carries out exporting described the second direct current after energy storage to described loop current, and described the second galvanic current value equals described the first galvanic current value; Sample to the output voltage of described non-isolation voltage stabilizing flow equalizing circuit in described voltage sample unit, and feedback voltage sampled signal is to described the first controller, described current sampling unit carries out current sample to described loop current, and extremely described the first controller of feedback current sampled signal, described the first controller controls signal to described the first voltage stabilizing current-sharing unit according to described voltage sampling signal and described current sampling signal output first; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is greater than default current-sharing magnitude of voltage and/or described loop current and is greater than default current-sharing current value, described the first voltage stabilizing current-sharing unit reduces output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit according to described the first control signal; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is less than described default current-sharing magnitude of voltage and/or described loop current and is less than described default current-sharing current value, described the first voltage stabilizing current-sharing unit increases output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit according to described the first control signal.
The present invention also provides a kind of electric power system, it comprises multiple power circuits, shunt current circuit and multiple electric current flow equalizing circuit, described electric current flow equalizing circuit is shunted and exported to described shunt current circuit to the output current of described power circuit, the electric current in described electric current flow equalizing circuit closes any two-way electric current that road module exports described shunt current circuit collaborate to process after output the first direct current; Described electric power system also comprises above-mentioned non-isolation voltage stabilizing flow equalizing circuit, and the first inductance in described non-isolation voltage stabilizing flow equalizing circuit closes road module from described electric current and accesses described the first direct current.
The present invention comprises the non-isolation voltage stabilizing flow equalizing circuit of the first inductance, the second inductance, the first voltage stabilizing current-sharing unit, voltage sample unit and current sampling unit by employing, the loop current of the direct current that the first inductance is exported in the first voltage stabilizing current-sharing unit and load output respectively afterflow exports load and the second inductance to, ensure that by the symmetrical energy storage effect of the first inductance and the second inductance the second galvanic current value of the second inductance output equals the first galvanic current value of the first inductance access, sample to the output voltage of the first voltage stabilizing current-sharing unit in voltage sample unit, and feedback voltage sampled signal to the first controller, simultaneously, current sampling unit carries out current sample to loop current, and feedback current sampled signal to the first controller, export the first control signal to drive the first voltage stabilizing current-sharing unit to adjust output voltage and the output current of non-isolation voltage stabilizing flow equalizing circuit by the first controller according to described voltage sampling signal and described current sampling signal again, to keep stable output voltage and output current.The voltage sampling signal that can feed back in conjunction with voltage sample unit due to the first controller drives the first voltage stabilizing current-sharing unit to adjust the output voltage of non-isolation voltage stabilizing flow equalizing circuit, even if so still can keep stable output voltage in the situation that input pressure reduction changes, thereby can keep stable output voltage in the situation that not inputted pressure differential limits; And because non-isolation voltage stabilizing flow equalizing circuit possesses stable output voltage, and there is not the device that occurs greatly the corresponding increase of heating loss because of the change of input pressure reduction, so whole circuit in the course of the work because of spread of voltage and the spent reactive power of thermal losses less, therefore also improved power supplying efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention one;
Fig. 2 is the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention one;
Fig. 3 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention two;
Fig. 4 is the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention two;
Fig. 5 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention three;
Fig. 6 is the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention three;
Fig. 7 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention four;
Fig. 8 is the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention four;
Fig. 9 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that comprises pressure unit that provides of the embodiment of the present invention five;
Figure 10 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that comprises pressure unit that provides of the embodiment of the present invention five;
Figure 11 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that comprises pressure unit that provides of the embodiment of the present invention five;
Figure 12 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that comprises pressure unit that provides of the embodiment of the present invention five;
Figure 13 is the cut-away view of the pressure unit in the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention five;
Figure 14 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention six;
Figure 15 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention six;
Figure 16 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention six;
Figure 17 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention six;
Figure 18 is the cut-away view of the pressure unit in the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention six;
Figure 19 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 20 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 21 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 22 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 23 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 24 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 25 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 26 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 27 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 28 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 29 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven;
Figure 30 is the structural representation of the non-isolation voltage stabilizing flow equalizing circuit that provides of the embodiment of the present invention seven.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The non-isolation voltage stabilizing flow equalizing circuit embodiment of the present invention being provided below in conjunction with specific embodiment is elaborated:
embodiment mono-:
Fig. 1 shows the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides, and for convenience of explanation, only shows the part relevant to the present embodiment, and details are as follows:
Non-isolation voltage stabilizing flow equalizing circuit comprises that the first controller 100, the first controllers 100 can be single-chip microcomputer or pulse width modulator.
Non-isolation voltage stabilizing flow equalizing circuit also comprises the first inductance L 1, the second inductance L 2, the first voltage stabilizing current-sharing unit 200, voltage sample unit 300 and current sampling unit 400.
The first end of the first inductance L 1 accesses the first direct current Vin+, the first end of the second inductance L 2 is exported the second direct current Vin-, the second end of the first inductance L 1 and the second end of the second inductance L 2 are connected respectively first input end and second input of the first voltage stabilizing current-sharing unit 200, the output of the first voltage stabilizing current-sharing unit 200 is exported direct current to load 500, the input of voltage sample unit 300 and output are connected respectively output and first controller 100 of the first voltage stabilizing current-sharing unit 200, the first sampling end of current sampling unit 400 receives the loop current that load 500 is exported, the second sampling end of current sampling unit 400 and output are connected respectively loop end and first controller 100 of the first voltage stabilizing current-sharing unit 200, the first controller 100 is also connected with the direct current regulation and control end of the first voltage stabilizing current-sharing unit 200.
The first inductance L 1 carries out exporting the first voltage stabilizing current-sharing unit 200 to after energy storage to the first direct current Vin+, the direct current afterflow that the first inductance L 1 is exported in the first voltage stabilizing current-sharing unit 200 exports load 500 to, the loop current that load 500 is exported exports the second inductance L 2 to through the first voltage stabilizing current-sharing unit 200 afterflows, the second inductance L 2 carries out exporting the second direct current Vin-after energy storage to above-mentioned loop current, and the current value of the second direct current Vin-equals the current value of the first direct current Vin+; The output voltage (export the galvanic voltage of load 500) of voltage sample unit 300 to non-isolation voltage stabilizing flow equalizing circuit sampled, and feedback voltage sampled signal V sto the first controller 100, the loop current that current sampling unit 400 is exported load 500 is carried out current sample, and feedback current sampled signal I sexport the first control signal Ctrl according to above-mentioned voltage sampling signal and current sampling signal to the first controller 100, the first controllers 100 1to the first voltage stabilizing current-sharing unit 200; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is greater than default current-sharing magnitude of voltage and/or above-mentioned loop current and is greater than default current-sharing current value, the first voltage stabilizing current-sharing unit 200 is according to the first control signal Ctrl 1reduce output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is less than default current-sharing magnitude of voltage and/or above-mentioned loop current and is less than default current-sharing current value, the first voltage stabilizing current-sharing unit 200 is according to the first control signal Ctrl 1increase output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit.
From foregoing, the first end of the first end of the first inductance L 1 and the second inductance L 2 is equivalent to anode and the negative terminal of supply line, and anode accesses the first direct current Vin+, and negative terminal is exported the second direct current Vin-.Above-mentioned default current-sharing magnitude of voltage and default current-sharing current value refer to respectively: in the time that above-mentioned non-isolation voltage stabilizing flow equalizing circuit is powered to supply line and need to realize voltage stabilizing and current balance type, and output voltage values and the output current value of non-isolation voltage stabilizing flow equalizing circuit.
In addition, in above-mentioned non-isolation voltage stabilizing flow equalizing circuit, owing to can output voltage being detected and according to voltage sampling signal, output voltage be adjusted, so can not there is not the unsettled situation of output voltage because of the variation of input pressure reduction, so with respect to prior art mentioned in background technology, the normal work of above-mentioned non-isolation voltage stabilizing flow equalizing circuit is not to be subject to input the restriction of pressure reduction.
For power supplying efficiency, be actually relevant to " stablizing of output voltage " and " thermal losses that device occurs ", power supplying efficiency is low because too high the causing of reactive power that when power supply is done, and output voltage is while exceeding the rated voltage that circuit can load, will increase reactive power, the thermal losses of the device in circuit increases also can increase reactive power.And in above-mentioned non-isolation voltage stabilizing flow equalizing circuit, adjusting in real time output voltage can make output voltage keep stable, and then reactive power while reducing to power, and the device adopting in above-mentioned non-isolation voltage stabilizing flow equalizing circuit can not occur that heating loss increases because input pressure reduction becomes large, reactive power when power supply also can reduce, so can reach the effect that improves power supplying efficiency.
Fig. 2 shows the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides, and for convenience of explanation, only shows the part relevant to the present embodiment, and details are as follows:
The first voltage stabilizing current-sharing unit 200 comprises the first isolating transformer T1, the first switching tube 201, the first sustained diode 1 and the second sustained diode 2.
The first end 1 of the armature winding of the first isolating transformer T1 is the direct current regulation and control end of the first voltage stabilizing current-sharing unit 200, being connected to altogether of the second end 2 of the armature winding of the first isolating transformer T1 and the first controller 100, the first end 3 of the secondary winding of the first isolating transformer T1 and the second end 4 are connected respectively controlled end and the input of the first switching tube 201, the common contact of the anode of the output of the first switching tube 201 and the first sustained diode 1 is the first input end of the first voltage stabilizing current-sharing unit 200, the common contact of the negative electrode of the input of the first switching tube 201 and the second sustained diode 2 is the second input of the first voltage stabilizing current-sharing unit 200, the anode of the negative electrode of the first sustained diode 1 and the second sustained diode 2 is respectively output and the loop end of the first voltage stabilizing current-sharing unit 200.
Wherein, the first switching tube 201 can be the semiconductor device that metal-oxide-semiconductor (comprising that NMOS pipe and PMOS manage), IGBT (Isolated Gate Bipolar Transistor, insulated gate bipolar thyristor) or other possess switching characteristic.Especially, in the time that the first switching tube 201 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the first switching tube 201; In the present embodiment, as shown in Figure 2, the first switching tube 201 is specially PMOS pipe Q1.
Voltage sample unit 300 comprises the first resistance R 1 and the second resistance R 2, the first end of the first resistance R 1 is the input of voltage sample unit 300, the common contact of the second end of the first resistance R 1 and the first end of the second resistance R 2 is the output of voltage sample unit 300, the second end ground connection of the second resistance R 2.
Current sampling unit 400 comprises the 3rd resistance R 3 and differential amplifier U1, the common contact of the first input end of the first end of the 3rd resistance R 3 and differential amplifier U1 is the first sampling end of current sampling unit 400, the common contact of the second end of the 3rd resistance R 3 and the second input of differential amplifier U1 is the second sampling end of current sampling unit 400, the output of differential amplifier U1 is the output of current sampling unit 400, and the positive power source terminal of differential amplifier U1 is connected respectively DC power supply VCC and ground with negative power end.
Below in conjunction with operation principle, the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 2 is described further:
The first inductance L 1 carries out exporting direct current after energy storage to the first direct current Vin+, this direct current exports load 500 to after the first sustained diode 1 afterflow, the loop current that load 500 is exported exports the second inductance L 2 to after the second sustained diode 2 afterflows, the second inductance L 2 carries out exporting the second direct current Vin-after energy storage to loop current, due to the symmetrical energy storage effect of the first inductance L 1 and the second inductance L 2, thereby make the current value of the first direct current Vin+ equal the current value of the second direct current Vin-.Meanwhile, the first resistance R 1 and the second resistance R 2 are carried out voltage sample to the direct current that exports load to, and voltage sampling signal is fed back to the first controller 100, the 3rd resistance R 3 is sampled to the loop current of load, and by differential amplifier U1, the sampled voltage at the 3rd resistance R 3 two ends is carried out exporting corresponding current sampling signal to the first controller 100 after differential amplification, the first controller 100 is according to voltage sampling signal V swith current sampling signal I sexport the first control signal Ctrl 1to the first isolating transformer T1, the first control signal Ctrl 1the on off operating mode of PMOS pipe Q1 is controlled PMOS pipe Q1 basis and the first control signal Ctrl after the first isolating transformer T1 carries out isolation processing 1corresponding duty ratio realizes make-break operation, and then realizes the adjustment to output voltage and output current, to ensure the stable of output voltage and output current.Concrete, in the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is greater than default current-sharing magnitude of voltage and/or above-mentioned loop current and is greater than default current-sharing current value, with the first control signal Ctrl 1corresponding duty ratio can reduce according to a certain change in duty cycle value, and PMOS pipe Q1 can make output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit also be reduced accordingly realizing in corresponding make-break operation process; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is less than default current-sharing magnitude of voltage and/or above-mentioned loop current and is less than default current-sharing current value, with the first control signal Ctrl 1corresponding duty ratio can increase according to a certain change in duty cycle value, and PMOS pipe Q1 can make output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit also be increased accordingly realizing in corresponding make-break operation process.
In the present embodiment, non-isolation voltage stabilizing flow equalizing circuit comprises the first inductance L 1, the second inductance L 2, the first voltage stabilizing current-sharing unit 200, voltage sample unit 300 and current sampling unit 400, and its circuit structure is simple, volume is little, cost is low and power density is high.
In addition, controlled the duty cycle of switching of the first switching tube 201 by the first controller 100, so that output voltage and the output current of non-isolation voltage stabilizing flow equalizing circuit are adjusted, thereby can in the situation that not inputted pressure differential limits, keep stable output voltage and output current, and further improve power supplying efficiency.
embodiment bis-:
On the basis of the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 1, as shown in Figure 3, it further comprises the 3rd inductance L 3, the 4th inductance L 4 and the second voltage stabilizing current-sharing unit 600 to the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides.
The first end of the first end of the 3rd inductance L 3 and the 4th inductance L 4 is connected respectively the first end of the first inductance L 1 and the first end of the second inductance L 2, the second end of the 3rd inductance L 3 and the second end of the 4th inductance L 4 are connected respectively first input end and second input of the second voltage stabilizing current-sharing unit 600, the direct current regulation and control end of the second voltage stabilizing current-sharing unit 600 is connected with the first controller 100, and the output of the second voltage stabilizing current-sharing unit 600 and loop end are connected respectively output and the loop end of the first voltage stabilizing current-sharing unit 200.
Under the control of the first controller, the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 alternations; The 3rd inductance L 3 carries out exporting the 3rd direct current Vin+ ' to the second voltage stabilizing current-sharing unit 600 after energy storage to the first direct current Vin+, in the time working in the second voltage stabilizing current-sharing unit 600, the second voltage stabilizing current-sharing unit 600 exports the 3rd direct current Vin+ ' afterflow to load 500, the loop current that load 500 is exported exports the 4th inductance L 4 to through the second voltage stabilizing current-sharing unit 600 afterflows, the 4th inductance L 4 carries out exporting the 4th direct current Vin-' after energy storage to above-mentioned loop current, and the current value of the 4th direct current Vin-' equals the current value of the 3rd direct current Vin+ '; The current sampling signal that the voltage sampling signal that the first controller 100 is exported according to voltage sample unit 300 and current sampling unit 400 are exported is exported respectively described the first control signal Ctrl 1with the second control signal Ctrl 2to the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is greater than loop current that default current-sharing magnitude of voltage and/or load 500 export and is greater than default current-sharing current value, the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 are respectively according to the first control signal Ctrl 1with the second control signal Ctrl 2alternation is to reduce output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is less than default current-sharing magnitude of voltage and/or above-mentioned loop current and is less than default current-sharing current value, the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 are respectively according to the first control signal Ctrl 1with the second control signal Ctrl 2alternation is to increase output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit.
In the present embodiment, the mode that output voltage and output current are alternately adjusted in above-mentioned the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 contributes to non-isolation voltage stabilizing flow equalizing circuit can stably work in the situation that electric current input and bearing power demand are larger greatly.
Fig. 4 shows the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides, and wherein, identical with shown in Fig. 2 of the internal structure of the first voltage regulation unit 200, voltage sample unit 300 and current sampling unit 400, therefore repeats no more.
For the second voltage stabilizing current-sharing unit 600, it comprises the second isolating transformer T2, second switch pipe 601, the 3rd sustained diode 3 and the 4th sustained diode 4.
The first end 1 of the armature winding of the second isolating transformer T2 is the direct current regulation and control end of the second voltage stabilizing current-sharing unit 600, the second end 2 of the armature winding of the second isolating transformer T2 connects the earth terminal of the first controller 100, the first end 3 of the secondary winding of the second isolating transformer T2 and the second end 4 are connected respectively controlled end and the input of second switch pipe 601, the common contact of the anode of the output of second switch pipe 601 and the 3rd sustained diode 3 is the first input end of the second voltage stabilizing current-sharing unit 600, the common contact of the negative electrode of the input of second switch pipe 601 and the 4th sustained diode 4 is the second input of the second voltage stabilizing current-sharing unit 600, the anode of the negative electrode of the 3rd sustained diode 3 and the 4th sustained diode 4 is respectively output and the loop end of the second voltage stabilizing current-sharing unit 600.
Wherein, the semiconductor switch pipe that second switch pipe 601 and the first switching tube 201 are same type, this semiconductor switch pipe can be the semiconductor device that metal-oxide-semiconductor (comprising that NMOS pipe and PMOS manage), IGBT or other possess switching characteristic, and in the time that this semiconductor switch pipe is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of semiconductor switch pipe.Due to identical with described in first embodiment of the invention of the first switching tube 201, do not repeat them here.And for second switch pipe 601, in the time that second switch pipe 601 is metal-oxide-semiconductor or IGBT, the grid of metal-oxide-semiconductor or IGBT, source electrode and drain electrode are respectively controlled end, input and the output of second switch pipe 601.In the present embodiment, as shown in Figure 4, second switch pipe 601 is specially PMOS pipe Q2.
In the present embodiment, the operation principle of the second voltage stabilizing current-sharing unit 600 is identical with the operation principle of the first voltage stabilizing current-sharing unit 200, wherein, and the first control signal Ctrl that the first switching tube 201 and second switch pipe 601 are exported according to the first controller 100 1with the second control signal Ctrl 2realize alternate conduction, i.e., when PMOS pipe Q1 conducting, PMOS pipe Q2 turn-offs; When PMOS pipe Q1 turn-offs, PMOS pipe Q2 conducting, so the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 form complementary voltage stabilizing current-sharing operating state, output voltage and output current to whole non-isolation voltage stabilizing flow equalizing circuit are controlled, to ensure the stable of output voltage and output current.
embodiment tri-:
On the basis of the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 1, the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides as shown in Figure 5, wherein, the first voltage stabilizing current-sharing unit 200 also has the first afterflow control end and the second afterflow control end, and the first afterflow control end of the first voltage stabilizing current-sharing unit 200 is also connected with the first controller 100 with the second afterflow control end.
Fig. 6 shows the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides, and wherein, identical with shown in Fig. 2 of the internal structure of voltage sample unit 300 and current sampling unit 400, therefore repeats no more.
For the first voltage stabilizing current-sharing unit 200, as shown in Figure 6, it comprises the 3rd isolating transformer T3, the 3rd switching tube 203, the 4th isolating transformer T4, the 4th switching tube 204 and the 5th switching tube 205.
The first end 1 of the armature winding of the 3rd isolating transformer T3 is the direct current regulation and control end of the first voltage stabilizing current-sharing unit 200, the second end 2 of the armature winding of the 3rd isolating transformer T3 and the first controller 100 are connected to ground altogether, the first end 3 of the secondary winding of the 3rd isolating transformer T3 and the second end 4 are connected respectively controlled end and the input of the 3rd switching tube 203, the common contact of the input of the output of the 3rd switching tube 203 and the 4th switching tube 204 is the first input end of the first voltage stabilizing current-sharing unit 200, the common contact of the output of the input of the 3rd switching tube 203 and the 5th switching tube 205 is the second input of the first voltage stabilizing current-sharing unit 200, the first end 1 of the armature winding of the 4th isolating transformer T4 is the first afterflow control end of the first voltage stabilizing current-sharing unit 200, the second end 2 of the armature winding of the 4th isolating transformer T4 and the first controller 100 are connected to ground altogether, the first end 3 of the secondary winding of the 4th isolating transformer T4 and the second end 4 are connected respectively controlled end and the input of the 4th switching tube 204, the controlled end of the 5th switching tube 205 is the second afterflow control end of the first voltage stabilizing current-sharing unit 200, the input of the output of the 4th switching tube 204 and the 5th switching tube 205 is respectively output and the loop end of the first voltage stabilizing current-sharing unit 200.
Wherein, the semiconductor switch pipe that the 3rd switching tube 203, the 4th switching tube 204 and the 5th switching tube 205 are same type, this semiconductor switch pipe can be the semiconductor device that metal-oxide-semiconductor (comprising that NMOS pipe and PMOS manage), IGBT or other possess switching characteristic, and in the time that this semiconductor switch pipe is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of semiconductor switch pipe.Especially, in the time that the 3rd switching tube 203 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the 3rd switching tube 203; In like manner, in the time that the 4th switching tube 204 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the 4th switching tube 204; In the time that the 5th switching tube 205 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the 5th switching tube 205.In the present embodiment, as shown in Figure 6, the 3rd switching tube 203, the 4th switching tube 204 and the 5th switching tube 205 are specifically respectively PMOS pipe Q3, PMOS pipe Q4 and PMOS pipe Q5.
Below in conjunction with operation principle, the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 6 is described further:
The first inductance L 1 carries out exporting after energy storage to the first direct current Vin+, the afterflow control signal that the first controller 100 is exported is carried out isolation processing rear drive PMOS pipe Q4 conducting through the 4th isolating transformer T4, carry out exporting load 500 to after afterflow with the direct current that the first inductance L 1 is exported, and the afterflow control signal that the first controller 100 is exported drives PMOS pipe Q6 conducting to carry out exporting the second inductance L 2 to after afterflow with the loop current that load 500 is exported, the second inductance L 2 carries out exporting the second direct current Vin-after energy storage to this loop current, due to the symmetrical energy storage effect of the first inductance L 1 and the second inductance L 2, thereby the current value that makes the second direct current Vin-equals the current value of the first direct current Vin+.Simultaneously, the first resistance R 1 and the second resistance R 2 are carried out voltage sample to the direct current that exports load to, and voltage sampling signal is fed back to the first controller 100, the 3rd resistance R 3 is sampled to the loop current of load, and by differential amplifier U1, the sampled voltage at the 3rd resistance R 3 two ends is carried out exporting corresponding current sampling signal to the first controller 100 after differential amplification, the first controller 100 is according to voltage sampling signal V swith current sampling signal I sexport the first control signal Ctrl 1to the first isolating transformer T1, the first control signal Ctrl 1the on off operating mode of PMOS pipe Q3 is controlled PMOS pipe Q3 basis and the first control signal Ctrl after the first isolating transformer T1 carries out isolation processing 1corresponding duty ratio realizes make-break operation, and then realizes the adjustment to output voltage and output current, to ensure the stable of output voltage and output current.Concrete, in the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is greater than default current-sharing magnitude of voltage and/or above-mentioned loop current and is greater than default current-sharing current value, with the first control signal Ctrl 1corresponding duty ratio can reduce according to a certain change in duty cycle value, and PMOS pipe Q3 can make output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit also be reduced accordingly realizing in corresponding make-break operation process; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is less than default current-sharing magnitude of voltage and/or above-mentioned loop current and is less than default current-sharing current value, with the first control signal Ctrl 1corresponding duty ratio can increase according to a certain change in duty cycle value, and PMOS pipe Q3 can make output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit also be increased accordingly realizing in corresponding make-break operation process.
In the present embodiment, by adopting the 4th switching tube 204 and the 5th switching tube 205 to realize afterflow effect, can further reduce conduction loss, improve power supplying efficiency, make non-isolation voltage stabilizing flow equalizing circuit be applicable to the application scenarios that input current is larger.
embodiment tetra-:
On the basis of the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 5, as shown in Figure 7, it further comprises the 5th inductance L 5, the 6th inductance L 6 and the 3rd voltage stabilizing current-sharing unit 700 to the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides.
The first end of the first end of the 5th inductance L 5 and the 6th inductance L 6 is connected respectively the first end of the first inductance L 1 and the first end of the second inductance L 2, the second end of the 5th inductance L 5 and the second end of the 6th inductance L 6 are connected respectively first input end and second input of the 3rd voltage stabilizing current-sharing unit 700, the output that direct current regulation and control end, the first afterflow control end and the second afterflow control end of the 3rd voltage stabilizing current-sharing unit 700 all connects the first controller 100, the three voltage stabilizing current-sharing unit 700 and loop end are connected respectively output and the loop end of the first voltage stabilizing current-sharing unit 200.
Under the control of the first controller 100, the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 alternations; The 5th inductance L 5 carries out exporting the 5th direct current Vin+ after energy storage to the first direct current Vin+ " to the 3rd voltage stabilizing current-sharing unit 700; in the time working in the 3rd voltage stabilizing current-sharing unit 700; the 3rd voltage stabilizing current-sharing unit 700 is by the 5th direct current Vin+ " afterflow exports load 500 to, the loop current that load 500 is exported exports the 6th inductance L 6 to through the 3rd voltage stabilizing current-sharing unit 700 afterflows, the 6th inductance L 6 carries out exporting the 6th direct current Vin-after energy storage to above-mentioned loop current ", the 6th direct current Vin-" current value equal the 5th direct current Vin+ " current value; The first controller 100 is at output the first control signal Ctrl 1time export the 3rd control signal Ctrl 3; The current sampling signal that the voltage sampling signal that the first controller 100 is exported according to voltage sample unit 300 and current sampling unit 400 are exported is exported respectively the first control signal Ctrl 1with the 3rd control signal Ctrl 3to the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is greater than loop current that default current-sharing magnitude of voltage and/or load 500 export and is greater than default current-sharing current value, the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 are respectively according to the first control signal Ctrl 1with the 3rd control signal Ctrl 3alternation is to reduce output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit; In the time that the output voltage of non-isolation voltage stabilizing flow equalizing circuit is less than default current-sharing magnitude of voltage and/or above-mentioned loop current and is less than default current-sharing current value, the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 are respectively according to the first control signal Ctrl 1with the 3rd control signal Ctrl 3alternation is to increase output voltage and/or the output current of non-isolation voltage stabilizing flow equalizing circuit.
In the present embodiment, the mode that output voltage and output current are alternately adjusted in above-mentioned the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 contributes to non-isolation voltage stabilizing flow equalizing circuit can stably work in the situation that electric current input and bearing power demand are larger greatly.
Fig. 8 shows the exemplary circuit structure of the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides, and wherein, identical with shown in Fig. 6 of the internal structure of the first voltage regulation unit 200, voltage sample unit 300 and current sampling unit 400, therefore repeats no more.
For the 3rd voltage stabilizing current-sharing unit 700, it comprises the 5th isolating transformer T5, the 6th switching tube 701, the 6th isolating transformer T6, the 7th switching tube 702 and the 8th switching tube 703.
The first end 1 of the armature winding of the 5th isolating transformer T5 is the direct current regulation and control end of the 3rd voltage stabilizing current-sharing unit 700, the second end 2 of the armature winding of the 5th isolating transformer T5 and the first controller 100 are connected to ground altogether, the first end 3 of the secondary winding of the 5th isolating transformer T5 and the second end 4 are connected respectively controlled end and the input of the 6th switching tube 701, the common contact of the input of the output of the 6th switching tube 701 and the 7th switching tube 702 is the first input end of the 3rd voltage stabilizing current-sharing unit 700, the common contact of the output of the input of the 6th switching tube 701 and the 8th switching tube 703 is the second input of the 3rd voltage stabilizing current-sharing unit 700, the first end 1 of the armature winding of the 6th isolating transformer T6 is the first afterflow control end of the 3rd voltage stabilizing current-sharing unit 700, the second end 2 of the armature winding of the 6th isolating transformer T6 and the first controller 100 are connected to ground altogether, the first end 3 of the secondary winding of the 6th isolating transformer T6 and the second end 4 are connected respectively controlled end and the input of the 7th switching tube 702, the controlled end of the 8th switching tube 703 is the second afterflow control end of the 3rd voltage stabilizing current-sharing unit 700, the input of the output of the 7th switching tube 702 and the 8th switching tube 703 is respectively output and the loop end of the 3rd voltage stabilizing current-sharing unit 700.
Wherein, the semiconductor switch pipe that the 3rd switching tube 203, the 4th switching tube 204, the 5th switching tube 205, the 6th switching tube 701, the 7th switching tube 702 and the 8th switching tube 703 are same type, this semiconductor switch pipe can be the semiconductor device that metal-oxide-semiconductor (comprising that NMOS pipe and PMOS manage), IGBT or other possess switching characteristic, and in the time that this semiconductor switch pipe is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of semiconductor switch pipe.Due to identical with described in third embodiment of the invention of the 3rd switching tube 203, the 4th switching tube 204 and the 5th switching tube 205, do not repeat them here.And for the 6th switching tube 701, the 7th switching tube 702 and the 8th switching tube 703, in the time that the 6th switching tube 701 is metal-oxide-semiconductor or IGBT, the grid of metal-oxide-semiconductor or IGBT, source electrode and drain electrode are respectively controlled end, input and the output of the 6th switching tube 701; In like manner, in the time that the 7th switching tube 702 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the 7th switching tube 702; In the time that the 8th switching tube 703 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the 8th switching tube 703.In the present embodiment, as shown in Figure 8, the 6th switching tube 701, the 7th switching tube 702 and the 8th switching tube 703 are specifically respectively PMOS pipe Q6, PMOS pipe Q7 and PMOS pipe Q8.
In the present embodiment, the operation principle of the 3rd voltage stabilizing current-sharing unit 700 is identical with the operation principle of the first voltage stabilizing current-sharing unit 200, wherein, and the first control signal Ctrl that the 3rd switching tube 203 and the 6th switching tube 701 are exported according to the first controller 100 1with the 3rd control signal Ctrl 3realize alternate conduction, i.e., when PMOS pipe Q3 conducting, PMOS pipe Q6 turn-offs; When PMOS pipe Q3 turn-offs, PMOS pipe Q6 conducting, so the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 form complementary voltage stabilizing current-sharing operating state, output voltage and output current to whole non-isolation voltage stabilizing flow equalizing circuit are controlled, to ensure the stable of output voltage and output current.
In addition, the present embodiment, by adopting the 4th switching tube 204, the 5th switching tube 205, the 7th switching tube 702 and the 8th switching tube 703 to realize afterflow effect, can further reduce conduction loss, and then improves power supplying efficiency.
embodiment five:
The non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides is respectively as Fig. 9, Figure 10, shown in Figure 11 and Figure 12, Fig. 9, Figure 10, non-isolation voltage stabilizing flow equalizing circuit shown in Figure 11 and Figure 12 is respectively at Fig. 1, Fig. 3, on the basis of the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 5 and Fig. 7, further comprise what pressure unit 800 formed, the input of pressure unit 800 is connected respectively first output of voltage stabilizing current-sharing unit 200 and the first sampling end of current sampling unit 400 with loop end, the direct current that pressure unit 800 is inputted its input carries out step-down processing and exports by its output.
As shown in figure 13, pressure unit 800 comprises the 9th switching tube 801, the 7th inductance L 7, the first diode D11, the first capacitor C 11 and second controller 802.
The input of the 9th switching tube 801 is the input of pressure unit 800, the negative electrode of the output of the 9th switching tube 801 and the first diode D11 is connected to the first end of the 7th inductance L 7 altogether, the common contact of the second end of the 7th inductance L 7 and the first end of the first capacitor C 11 is the output of pressure unit 800, the common contact of the second end of the anode of the first diode D11 and the first capacitor C 11 is the loop end of pressure unit 800, and the controlled end of the 9th switching tube 801 connects second controller 802.
Above-mentioned the 9th switching tube 801, the 7th inductance L 7, the first diode D11 and the first capacitor C 11 form a buck buck circuit, the direct current that this buck buck circuit is inputted the input of the 9th switching tube 801 carries out exporting load to after step-down processing, step-down ratio is determined by second controller 802, second controller 802 is exported control signal and is driven the 9th switching tube 801 to realize make-break operation according to corresponding duty ratio, so the duty cycle of switching of the 9th switching tube 801 has determined the step-down ratio of this buck buck circuit.
Wherein, the 9th switching tube 801 can be the semiconductor device that metal-oxide-semiconductor (comprising that NMOS pipe and PMOS manage), IGBT or other possess switching characteristic.In the time that the 9th switching tube 801 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the 9th switching tube 801.Second controller 802 can be single-chip microcomputer or pulse width modulator.
In sum, the present embodiment by adding above-mentioned pressure unit 800 in non-isolation voltage stabilizing flow equalizing circuit, can the in the situation that of high input voltage, realize step-down and process to export the direct current that meets loaded work piece voltage range, so the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides can be applicable to the application scenarios of low input (as 48V low pressure) and high input voltage (as 400V high pressure) simultaneously.
embodiment six:
On the basis of the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 9, Figure 10, Figure 11 and Figure 12, the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides is respectively as shown in Figure 14, Figure 15, Figure 16 and Figure 17, pressure unit 800 also has step-down control end, and the step-down control end of pressure unit 800 is connected with the first controller 100.
As shown in figure 18, pressure unit 800 comprises the tenth switching tube 803, the 8th inductance L 8, the second diode D12 and the second capacitor C 12.
The input of the tenth switching tube 803 is the input of pressure unit 800, the negative electrode of the output of the tenth switching tube 803 and the second diode D12 is connected to the first end of the 8th inductance L 8 altogether, the common contact of the second end of the 8th inductance L 8 and the first end of the second capacitor C 12 is the output of pressure unit 800, the common contact of the second end of the anode of the second diode D12 and the second capacitor C 12 is the loop end of pressure unit 800, and the controlled end of the tenth switching tube 803 is the step-down control end of pressure unit 800.
Above-mentioned the tenth switching tube 803, the 8th inductance L 8, the second diode D12 and the second capacitor C 12 form a buck buck circuit, the direct current that this buck buck circuit is inputted the input of the tenth switching tube 803 carries out exporting load to after step-down processing, step-down ratio is determined by the first controller 100, the first controller 100 is exported control signal and is driven the tenth switching tube 803 to realize make-break operation according to corresponding duty ratio, so the duty cycle of switching of the tenth switching tube 803 has determined the step-down ratio of this buck buck circuit.
Wherein, the tenth switching tube 803 can be the semiconductor device that metal-oxide-semiconductor (comprising that NMOS pipe and PMOS manage), IGBT or other possess switching characteristic.In the time that the tenth switching tube 803 is metal-oxide-semiconductor or IGBT, grid, source electrode and the drain electrode of metal-oxide-semiconductor or IGBT is respectively controlled end, input and the output of the tenth switching tube 803.
In sum, the present embodiment by adding above-mentioned pressure unit 800 in non-isolation voltage stabilizing flow equalizing circuit, can the in the situation that of high input voltage, realize step-down and process to export the direct current that meets loaded work piece voltage range, so the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides can be applicable to the application scenarios of low input (as 48V low pressure) and high input voltage (as 400V high pressure) simultaneously.
embodiment seven:
On the basis of the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 1, Fig. 3, Fig. 5, Fig. 7, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 14, Figure 15, Figure 16 and Figure 17, the non-isolation voltage stabilizing flow equalizing circuit that the present embodiment provides also comprises filter capacitor C1.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 1, as shown in figure 19, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 3, as shown in figure 20, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 5, as shown in figure 21, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 7, as shown in figure 22, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Fig. 9, as shown in figure 23, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Figure 10, as shown in figure 24, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Figure 11, as shown in figure 25, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Figure 12, as shown in figure 26, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Figure 14, as shown in figure 27, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Figure 15, as shown in figure 28, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 and the second voltage stabilizing current-sharing unit 600 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Figure 16, as shown in figure 29, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 carries out filtering processing.
Based on the non-isolation voltage stabilizing flow equalizing circuit shown in Figure 17, as shown in figure 30, filter capacitor C1 is connected between the output and loop end of the first voltage stabilizing current-sharing unit 200, and the direct current that filter capacitor C1 exports the first voltage stabilizing current-sharing unit 200 and the 3rd voltage stabilizing current-sharing unit 700 carries out filtering processing.In sum, the non-isolation voltage stabilizing flow equalizing circuit that the embodiment of the present invention provides can keep stable output voltage and output current in the situation that not inputted pressure differential limits, has improved power supplying efficiency.
It comprises existing multiple power circuit, shunt current circuit and multiple electric current flow equalizing circuit, electric current flow equalizing circuit is shunted and exported to shunt current circuit to the output current of power circuit, the electric current in electric current flow equalizing circuit closes any two-way electric current that road module exports shunt current circuit collaborate to process after output the first direct current Vin+.Above-mentioned electric power system also comprises the non-isolation voltage stabilizing flow equalizing circuit as shown in Fig. 1 to Figure 30, and the first inductance L 1 in non-isolation voltage stabilizing flow equalizing circuit is closed road module from above-mentioned electric current and accessed the first direct current Vin+.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims (24)

1. a non-isolation voltage stabilizing flow equalizing circuit, comprises the first controller, it is characterized in that, described non-isolation voltage stabilizing flow equalizing circuit also comprises:
The first inductance, the second inductance, the first voltage stabilizing current-sharing unit, voltage sample unit and current sampling unit;
The first end of described the first inductance accesses the first direct current, the first end of described the second inductance is exported the second direct current, the second end of described the first inductance and the second end of described the second inductance are connected respectively first input end and second input of described the first voltage stabilizing current-sharing unit, the output of described the first voltage stabilizing current-sharing unit is exported direct current to load, the input of described voltage sample unit and output are connected respectively output and described first controller of described the first voltage stabilizing current-sharing unit, the first sampling end of described current sampling unit receives the loop current of load output, the second sampling end of described current sampling unit and output are connected respectively loop end and described first controller of described the first voltage stabilizing current-sharing unit, described the first controller is also connected with the direct current regulation and control end of described the first voltage stabilizing current-sharing unit,
Described the first inductance carries out exporting described the first voltage stabilizing current-sharing unit to after energy storage to described the first direct current, the direct current afterflow that described the first inductance is exported in described the first voltage stabilizing current-sharing unit exports described load to, the loop current that described load is exported exports described the second inductance to through described the first voltage stabilizing current-sharing unit afterflow, described the second inductance carries out exporting described the second direct current after energy storage to described loop current, and described the second galvanic current value equals described the first galvanic current value; Sample to the output voltage of described non-isolation voltage stabilizing flow equalizing circuit in described voltage sample unit, and feedback voltage sampled signal is to described the first controller, described current sampling unit carries out current sample to described loop current, and extremely described the first controller of feedback current sampled signal, described the first controller controls signal to described the first voltage stabilizing current-sharing unit according to described voltage sampling signal and described current sampling signal output first; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is greater than default current-sharing magnitude of voltage and/or described loop current and is greater than default current-sharing current value, described the first voltage stabilizing current-sharing unit reduces output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit according to described the first control signal; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is less than described default current-sharing magnitude of voltage and/or described loop current and is less than described default current-sharing current value, described the first voltage stabilizing current-sharing unit increases output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit according to described the first control signal.
2. non-isolation voltage stabilizing flow equalizing circuit as claimed in claim 1, is characterized in that, described non-isolation voltage stabilizing flow equalizing circuit also comprises the 3rd inductance, the 4th inductance and the second voltage stabilizing current-sharing unit;
The first end of the first end of described the 3rd inductance and described the 4th inductance is connected respectively the first end of described the first inductance and the first end of described the second inductance, the second end of described the 3rd inductance and the second end of described the 4th inductance are connected respectively first input end and second input of described the second voltage stabilizing current-sharing unit, the direct current regulation and control end of described the second voltage stabilizing current-sharing unit is connected with described the first controller, and the output of described the second voltage stabilizing current-sharing unit and loop end are connected respectively output and the loop end of described the first voltage stabilizing current-sharing unit;
Under the control of described the first controller, described the first voltage stabilizing current-sharing unit and described the second voltage stabilizing current-sharing units alternately work; Described the 3rd inductance carries out exporting the 3rd direct current to described the second voltage stabilizing current-sharing unit after energy storage to described the first direct current, in the time of described the second voltage stabilizing current-sharing cell operation, described the second voltage stabilizing current-sharing unit exports described the 3rd direct current afterflow to described load, the loop current that described load is exported exports described the 4th inductance to through described the second voltage stabilizing current-sharing unit afterflow, described the 4th inductance carries out exporting the 4th direct current after energy storage to described loop current, and described the 4th galvanic current value equals described the 3rd galvanic current value; Described the first controller is exported respectively described the first control signal and second according to described voltage sampling signal and described current sampling signal and is controlled signal to described the first voltage stabilizing current-sharing unit and described the second voltage stabilizing current-sharing unit; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is greater than described default current-sharing magnitude of voltage and/or described loop current and is greater than described default current-sharing current value, described the first voltage stabilizing current-sharing unit and described the second voltage stabilizing current-sharing unit respectively according to described the first control signal and described the second control signal alternation to reduce output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is less than described default current-sharing magnitude of voltage and/or described loop current and is less than described default current-sharing current value, described the first voltage stabilizing current-sharing unit and described the second voltage stabilizing current-sharing unit respectively according to described the first control signal and described the second control signal alternation to increase output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit.
3. non-isolation voltage stabilizing flow equalizing circuit as claimed in claim 1, is characterized in that, the first afterflow control end of described the first voltage stabilizing current-sharing unit is also connected with described the first controller with the second afterflow control end.
4. non-isolation voltage stabilizing flow equalizing circuit as claimed in claim 3, is characterized in that, described non-isolation voltage stabilizing flow equalizing circuit also comprises the 5th inductance, the 6th inductance and the 3rd voltage stabilizing current-sharing unit;
The first end of the first end of described the 5th inductance and described the 6th inductance is connected respectively the first end of described the first inductance and the first end of described the second inductance, the second end of described the 5th inductance and the second end of described the 6th inductance are connected respectively first input end and second input of described the 3rd voltage stabilizing current-sharing unit, the direct current regulation and control end of described the 3rd voltage stabilizing current-sharing unit, the first afterflow control end and the second afterflow control end all connect described the first controller, the output of described the 3rd voltage stabilizing current-sharing unit and loop end are connected respectively output and the loop end of described the first voltage stabilizing current-sharing unit,
Under the control of described the first controller, described the first voltage stabilizing current-sharing unit and described the 3rd voltage stabilizing current-sharing units alternately work; Described the 5th inductance carries out exporting the 5th direct current to described the 3rd voltage stabilizing current-sharing unit after energy storage to described the first direct current, in the time of described the 3rd voltage stabilizing current-sharing cell operation, described the 3rd voltage stabilizing current-sharing unit exports described the 5th direct current afterflow to described load, the loop current that described load is exported exports described the 6th inductance to through described the 3rd voltage stabilizing current-sharing unit afterflow, described the 6th inductance carries out exporting the 6th direct current after energy storage to described loop current, and described the 6th galvanic current value equals described the 5th galvanic current value; Described the first controller is exported respectively described the first control signal and the 3rd according to described voltage sampling signal and described current sampling signal and is controlled signal to described the first voltage stabilizing current-sharing unit and described the 3rd voltage stabilizing current-sharing unit; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is greater than described default current-sharing magnitude of voltage and/or described loop current and is greater than described default current-sharing current value, described the first voltage stabilizing current-sharing unit and described the 3rd voltage stabilizing current-sharing unit respectively according to described the first control signal and described the 3rd control signal alternation to reduce output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit; In the time that the output voltage of described non-isolation voltage stabilizing flow equalizing circuit is less than described default current-sharing magnitude of voltage and/or described loop current and is less than described default current-sharing current value, described the first voltage stabilizing current-sharing unit and described the 3rd voltage stabilizing current-sharing unit respectively according to described the first control signal and described the 3rd control signal alternation to increase output voltage and/or the output current of described non-isolation voltage stabilizing flow equalizing circuit.
5. the non-isolation voltage stabilizing flow equalizing circuit as described in claim 1 to 4 any one, is characterized in that, described non-isolation voltage stabilizing flow equalizing circuit also comprises filter capacitor, and described filter capacitor is connected between the output and loop end of described the first voltage stabilizing current-sharing unit.
6. the non-isolation voltage stabilizing flow equalizing circuit as described in claim 1 to 4 any one, it is characterized in that, described non-isolation voltage stabilizing flow equalizing circuit also comprises pressure unit, the input of described pressure unit is connected respectively described first output of voltage stabilizing current-sharing unit and the first sampling end of described current sampling unit with loop end, and the direct current that described pressure unit is inputted its input carries out step-down processing and exports by its output.
7. non-isolation voltage stabilizing flow equalizing circuit as claimed in claim 6, is characterized in that, described non-isolation voltage stabilizing flow equalizing circuit also comprises filter capacitor, and described filter capacitor is connected between the output and loop end of described the first voltage stabilizing current-sharing unit.
8. non-isolation voltage stabilizing flow equalizing circuit as claimed in claim 6, is characterized in that, the step-down control end of described pressure unit is also connected with described the first controller.
9. non-isolation voltage stabilizing flow equalizing circuit as claimed in claim 8, is characterized in that, described non-isolation voltage stabilizing flow equalizing circuit also comprises filter capacitor, and described filter capacitor is connected between the output and loop end of described the first voltage stabilizing current-sharing unit.
10. non-isolation voltage stabilizing flow equalizing circuit as claimed in claim 1, is characterized in that, described the first voltage stabilizing current-sharing unit comprises:
The first isolating transformer, the first switching tube, the first fly-wheel diode and the second fly-wheel diode;
The first end of the armature winding of described the first isolating transformer is the direct current regulation and control end of described the first voltage stabilizing current-sharing unit, the second end of the armature winding of described the first isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the first isolating transformer and the second end are connected respectively controlled end and the input of described the first switching tube, the common contact of the anode of the output of described the first switching tube and described the first fly-wheel diode is the first input end of described the first voltage stabilizing current-sharing unit, the common contact of the negative electrode of the input of described the first switching tube and described the second fly-wheel diode is the second input of described the first voltage stabilizing current-sharing unit, the anode of the negative electrode of described the first fly-wheel diode and described the second fly-wheel diode is respectively output and the loop end of described the first voltage stabilizing current-sharing unit.
11. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 2, is characterized in that, the structure of described the first voltage stabilizing current-sharing unit is identical with the structure of described the second voltage stabilizing current-sharing unit;
Described the first voltage stabilizing current-sharing unit comprises:
The first isolating transformer, the first switching tube, the first fly-wheel diode and the second fly-wheel diode;
The first end of the armature winding of described the first isolating transformer is the direct current regulation and control end of described the first voltage stabilizing current-sharing unit, the second end of the armature winding of described the first isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the first isolating transformer and the second end are connected respectively controlled end and the input of described the first switching tube, the common contact of the anode of the output of described the first switching tube and described the first fly-wheel diode is the first input end of described the first voltage stabilizing current-sharing unit, the common contact of the negative electrode of the input of described the first switching tube and described the second fly-wheel diode is the second input of described the first voltage stabilizing current-sharing unit, the anode of the negative electrode of described the first fly-wheel diode and described the second fly-wheel diode is respectively output and the loop end of described the first voltage stabilizing current-sharing unit,
Described the second voltage stabilizing current-sharing unit comprises:
The second isolating transformer, second switch pipe, the 3rd fly-wheel diode and the 4th fly-wheel diode;
The first end of the armature winding of described the second isolating transformer is the direct current regulation and control end of described the second voltage stabilizing current-sharing unit, the second end of the armature winding of described the second isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the second isolating transformer and the second end are connected respectively controlled end and the input of described second switch pipe, the common contact of the anode of the output of described second switch pipe and described the 3rd fly-wheel diode is the first input end of described the second voltage stabilizing current-sharing unit, the common contact of the negative electrode of the input of described second switch pipe and described the 4th fly-wheel diode is the second input of described the second voltage stabilizing current-sharing unit, the anode of the negative electrode of described the 3rd fly-wheel diode and described the 4th fly-wheel diode is respectively output and the loop end of described the second voltage stabilizing current-sharing unit.
12. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 3, is characterized in that, described the first voltage stabilizing current-sharing unit comprises:
The 3rd isolating transformer, the 3rd switching tube, the 4th isolating transformer, the 4th switching tube and the 5th switching tube;
The first end of the armature winding of described the 3rd isolating transformer is the direct current regulation and control end of described the first voltage stabilizing current-sharing unit, the second end of the armature winding of described the 3rd isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the 3rd isolating transformer and the second end are connected respectively controlled end and the input of described the 3rd switching tube, the common contact of the input of the output of described the 3rd switching tube and described the 4th switching tube is the first input end of described the first voltage stabilizing current-sharing unit, the common contact of the output of the input of described the 3rd switching tube and described the 5th switching tube is the second input of described the first voltage stabilizing current-sharing unit, the first end of the armature winding of described the 4th isolating transformer is the first afterflow control end of described the first voltage stabilizing current-sharing unit, the second end of the armature winding of described the 4th isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the 4th isolating transformer and the second end are connected respectively controlled end and the input of described the 4th switching tube, the controlled end of described the 5th switching tube is the second afterflow control end of described the first voltage stabilizing current-sharing unit, the input of the output of described the 4th switching tube and described the 5th switching tube is respectively output and the loop end of described the first voltage stabilizing current-sharing unit.
13. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 4, is characterized in that, the structure of described the first voltage stabilizing current-sharing unit is identical with the structure of described the 3rd voltage stabilizing current-sharing unit;
Described the first voltage stabilizing current-sharing unit comprises:
The 3rd isolating transformer, the 3rd switching tube, the 4th isolating transformer, the 4th switching tube and the 5th switching tube;
The first end of the armature winding of described the 3rd isolating transformer is the direct current regulation and control end of described the first voltage stabilizing current-sharing unit, the second end of the armature winding of described the 3rd isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the 3rd isolating transformer and the second end are connected respectively controlled end and the input of described the 3rd switching tube, the common contact of the input of the output of described the 3rd switching tube and described the 4th switching tube is the first input end of described the first voltage stabilizing current-sharing unit, the common contact of the output of the input of described the 3rd switching tube and described the 5th switching tube is the second input of described the first voltage stabilizing current-sharing unit, the first end of the armature winding of described the 4th isolating transformer is the first afterflow control end of described the first voltage stabilizing current-sharing unit, the second end of the armature winding of described the 4th isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the 4th isolating transformer and the second end are connected respectively controlled end and the input of described the 4th switching tube, the controlled end of described the 5th switching tube is the second afterflow control end of described the first voltage stabilizing current-sharing unit, the input of the output of described the 4th switching tube and described the 5th switching tube is respectively output and the loop end of described the first voltage stabilizing current-sharing unit,
Described the 3rd voltage stabilizing current-sharing unit comprises:
The 5th isolating transformer, the 6th switching tube, the 6th isolating transformer, the 7th switching tube and the 8th switching tube;
The first end of the armature winding of described the 5th isolating transformer is the direct current regulation and control end of described the 3rd voltage stabilizing current-sharing unit, the second end of the armature winding of described the 5th isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the 5th isolating transformer and the second end are connected respectively controlled end and the input of described the 6th switching tube, the common contact of the input of the output of described the 6th switching tube and described the 7th switching tube is the first input end of described the 3rd voltage stabilizing current-sharing unit, the common contact of the output of the input of described the 6th switching tube and described the 8th switching tube is the second input of described the 3rd voltage stabilizing current-sharing unit, the first end of the armature winding of described the 6th isolating transformer is the first afterflow control end of described the 3rd voltage stabilizing current-sharing unit, the second end of the armature winding of described the 6th isolating transformer and described the first controller are connected to ground altogether, the first end of the secondary winding of described the 6th isolating transformer and the second end are connected respectively controlled end and the input of described the 7th switching tube, the controlled end of described the 8th switching tube is the second afterflow control end of described the 3rd voltage stabilizing current-sharing unit, the input of the output of described the 7th switching tube and described the 8th switching tube is respectively output and the loop end of described the 3rd voltage stabilizing current-sharing unit.
14. non-isolation voltage stabilizing flow equalizing circuits as described in claim 1 to 4 any one, it is characterized in that, described voltage sample unit comprises the first resistance and the second resistance, the first end of described the first resistance is the input of described voltage sample unit, the common contact of the second end of described the first resistance and the first end of described the second resistance is the output of described voltage sample unit, the second end ground connection of described the second resistance.
15. non-isolation voltage stabilizing flow equalizing circuits as described in claim 1 to 4 any one, it is characterized in that, described current sampling unit comprises the 3rd resistance and differential amplifier, the first sampling end that the common contact of described the 3rd first end of resistance and the first input end of described differential amplifier is described current sampling unit, the second sampling end that the common contact of the second end of described the 3rd resistance and the second input of described differential amplifier is described current sampling unit, the output of described differential amplifier is the output of described current sampling unit, the positive power source terminal of described differential amplifier is connected respectively DC power supply and ground with negative power end.
16. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 6, is characterized in that, described pressure unit comprises:
The 9th switching tube, the 7th inductance, the first diode, the first electric capacity and second controller;
The input of described the 9th switching tube is the input of described pressure unit, the negative electrode of the output of described the 9th switching tube and described the first diode is connected to the first end of described the 7th inductance altogether, the output that the common contact of the second end of described the 7th inductance and the first end of described the first electric capacity is described pressure unit, the loop end that the common contact of the second end of the anode of described the first diode and described the first electric capacity is described pressure unit, the controlled end of the 9th switching tube connects described second controller.
17. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 8, is characterized in that, described pressure unit comprises:
The tenth switching tube, the 8th inductance, the second diode and the second electric capacity;
The input of described the tenth switching tube is the input of described pressure unit, the negative electrode of the output of described the tenth switching tube and described the second diode is connected to the first end of described the 8th inductance altogether, the output that the common contact of the second end of described the 8th inductance and the first end of described the second electric capacity is described pressure unit, the loop end that the common contact of the second end of the anode of described the second diode and described the second electric capacity is described pressure unit, the step-down control end that the controlled end of the tenth switching tube is described pressure unit.
18. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 10, is characterized in that, described the first switching tube is metal-oxide-semiconductor or IGBT;
Grid, source electrode and the drain electrode of described metal-oxide-semiconductor or described IGBT is respectively controlled end, input and the output of described the first switching tube.
19. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 11, it is characterized in that, the semiconductor switch pipe that described the first switching tube and described second switch pipe are same type, described semiconductor switch pipe is metal-oxide-semiconductor or IGBT, and grid, source electrode and the drain electrode of described metal-oxide-semiconductor or described IGBT is respectively controlled end, input and the output of described semiconductor switch pipe.
20. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 12, it is characterized in that, the semiconductor switch pipe that described the 3rd switching tube, described the 4th switching tube and described the 5th switching tube are same type, described semiconductor switch pipe is metal-oxide-semiconductor or IGBT, and grid, source electrode and the drain electrode of described metal-oxide-semiconductor or described IGBT is respectively controlled end, input and the output of described semiconductor switch pipe
21. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 13, it is characterized in that, the semiconductor switch pipe that described the 3rd switching tube, described the 4th switching tube, described the 5th switching tube, described the 6th switching tube, described the 7th switching tube and described the 8th switching tube are same type, described semiconductor switch pipe is metal-oxide-semiconductor or IGBT, and grid, source electrode and the drain electrode of described metal-oxide-semiconductor or described IGBT is respectively controlled end, input and the output of described semiconductor switch pipe.
22. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 16, is characterized in that, described the 9th switching tube is metal-oxide-semiconductor or IGBT;
Grid, source electrode and the drain electrode of described metal-oxide-semiconductor or described IGBT is respectively controlled end, input and the output of described the 9th switching tube.
23. non-isolation voltage stabilizing flow equalizing circuits as claimed in claim 17, is characterized in that, described the tenth switching tube is metal-oxide-semiconductor or IGBT;
Grid, source electrode and the drain electrode of described metal-oxide-semiconductor or described IGBT is respectively controlled end, input and the output of described the tenth switching tube.
24. 1 kinds of electric power systems, it comprises multiple power circuits, shunt current circuit and multiple electric current flow equalizing circuit, described electric current flow equalizing circuit is shunted and exported to described shunt current circuit to the output current of described power circuit, electric current in described electric current flow equalizing circuit closes any two-way electric current that road module exports described shunt current circuit collaborate to process after output the first direct current, it is characterized in that, described electric power system also comprises as claim 1 to 4, 7 to 13, non-isolation voltage stabilizing flow equalizing circuit described in 16 to 23 any one, the first inductance in described non-isolation voltage stabilizing flow equalizing circuit closes road module from described electric current and accesses described the first direct current.
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