CN103795241A - Controlled direct-current power converter and controller thereof - Google Patents
Controlled direct-current power converter and controller thereof Download PDFInfo
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- CN103795241A CN103795241A CN201210429067.8A CN201210429067A CN103795241A CN 103795241 A CN103795241 A CN 103795241A CN 201210429067 A CN201210429067 A CN 201210429067A CN 103795241 A CN103795241 A CN 103795241A
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Abstract
The invention provides a direct-current power converter controlled by a controller. The power converter comprises a controlled voltage transformation unit and a power output unit, wherein the controlled voltage transformation unit has paired controlled switches and is used for changing transferred electric quantity in inductors connected with the controlled switches based on on/off of the controlled switches so as to output voltage-transformed direct-current power, and the power output unit is used for stabilizing the voltage-transformed direct-current power to provide stable power output. The controller comprises a comparison unit used for comparing an electric signal output by the power output unit with a preset reference signal to obtain an error signal between the two, and a control unit used for performing feedback calculation on electric signals of the connected controlled switches and the error signal to obtain a control quantity, and changing the duty ratio of a pulse signal of a predetermined cycle based on the control quantity to control the pairs of controlled switches, wherein the pulse signal cycles of the pairs of controlled switches are the same, and the phase difference is 180 degrees.
Description
Technical field
The present invention relates to a kind of controlled DC power converter and controller thereof.
Background technology
Along with China's photovoltaic industry, new-energy automobile and the fast development of communicating by letter, more and more vigorous for the demand of DC power converter.The demand for development that volume is little, lightweight, the high and low direct voltage input of good stability, the coefficient of safety DC power converter low with cost meets photovoltaic generation, electric automobile and communicate by letter, has a good application prospect.
In actual applications, due to the existence of the factors such as the power supply instability of extraneous interference or DC power supply, make the power of DC power converter output also unstable, therefore conventional way is to increase inductive current detection circuit in described DC power converter, as as described in connect Hall element etc. near the inductance of DC power converter, the electric weight that the signal of telecommunication providing based on transducer is again revised the inductance storage in DC power converter and shifted, the problem such as so, make the circuit cost of whole direct current co-variation parallel operation high, circuit complexity is high.
Therefore, need to improve existing DC power converter and controller thereof.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of controlled DC power converter and controller thereof, for solving the problem of prior art DC power converter circuit complexity.
For achieving the above object and other relevant objects, the invention provides a kind of controlled DC power converter, it at least comprises: the controlled voltage transformation unit with paired controlled switch, change the shifting savings of the inductance that described controlled switch connects separately for the break-make based on described controlled switch, to export the DC power supply after transformation; The control of the pulse signals that wherein, every a pair of described controlled switch is spent based on phase phasic difference 180 replaces break-make; The power stage unit being connected with described controlled voltage transformation unit, for stablizing processing by the described DC power supply after transformation, so that stable power stage to be provided.
Preferably, described controlled DC power converter also comprises: the voltage stabilizing input unit that is positioned at described controlled voltage transformation unit front end and is attached thereto, and for the DC power supply of stable input.
Preferably, described voltage stabilizing input unit comprises: the first electric capacity being connected with described DC power supply; The first resistance with described the first Capacitance parallel connection.
Preferably, described controlled voltage transformation unit comprises: paired controlled transforming circuit; Described controlled transforming circuit at least comprises: the described inductance being connected with one end of described voltage stabilizing input unit, the described controlled switch being connected with described inductance, and the diode that is connected with described inductance of anode one end.
Preferably, described controlled switch at least comprises: power switch, the second resistance and driver; Wherein, the collector of described power switch connects described inductance, and the base stage of described power switch connects described driver, and the emitter-base bandgap grading of described power switch connects described the second resistance; Wherein, the break-make of the power switch that described driver connects for pulse signal control based on received, identical, the phase phasic difference 180 of cycle of the pulse signal that the every pair of described driver receives is spent.
Preferably, described power stage unit comprises: the second electric capacity being connected with the negative electrode of all described diodes, and one by one series winding and with multiple the 3rd resistance of described the second Capacitance parallel connection.
Based on above-mentioned purpose, the present invention also provides a kind of controller for DC power converter, it at least comprises: the comparing unit being connected with the power stage unit in as above arbitrary described DC power converter, for comparing from the power supply signal of described power stage unit and default reference signal gathering, and obtain the error signal between the two; The control unit being connected with the controlled switch in described comparing unit and described DC power converter, feeds back calculating for the signal of telecommunication and described error signal that the break-make of described controlled switch is formed; And change the duty ratio of the pulse signal of predetermined period based on feeding back the result of calculating, and the described pulse signal after changing is transported to described controlled switch; Wherein, a pair of described control unit that every a pair of described controlled switch connects, exports based on this alternately break-make to described controlled switch the pulse signal that a pair of phase phasic difference 180 is spent.
Preferably, described comparing unit comprises: the first subtracter being connected with the output of the 3rd resistance in described power stage unit and described reference signal, for more described the 3rd power supply signal at resistance place and the error of described reference signal, and output error signal; The amplifier being connected with described subtracter, for being amplified described error signal exported.
Preferably, described control unit comprises: what be connected with described controlled switch follows filtration module, feedback circuit and comparator; Wherein, described feedback circuit comprises: divider, adjuster, the second subtracter; Described in connecting, an input of described divider follows filtration module, another input of described divider connects the output of described adjuster, the output of described divider connects an input of described the second subtracter, another input of described the second subtracter connects described comparing unit, the output of described the second subtracter connects the input of described adjuster, and the output of described adjuster connects described comparator; Described comparator, the comparison for the result calculated based on described feedback with the waveform of predetermined period, generate described predetermined period and duty ratio with the adjustable described pulse signal of result of described feedback calculating, and described pulse signal is exported.
The present invention also provides a kind of DC power converter being controlled by the controller, and it at least comprises: as above arbitrary described DC power converter; And the as above arbitrary described controller being connected with described DC power converter.
As mentioned above, a kind of controlled DC power converter of the present invention and controller thereof, there is following beneficial effect: the 3rd resistance in DC power converter of the present invention, comparing unit in described controller, driver in control unit and described DC power converter forms Voltage loop, simultaneously, each controlled switch in described DC power converter, driver in described control unit and described DC power converter forms electric current loop, described Voltage loop and electric current loop can provide the voltage of described DC power converter in real time to described controller, curent change, simultaneously, described controller is based on voltage, the duty ratio of the pulse signal to described driver output is adjusted in the variation of electric current in real time, can provide stable power output at described DC power converter during in practical application thus, in addition, described controller utilizes the business of the controlled quentity controlled variable of current signal that controlled switch provides and the output of described adjuster to react the curent change situation in corresponding inductance, can, without add current sample element in described DC power converter, reduce the cost of described DC power converter.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of controlled DC power converter of the present invention.
Fig. 2 is shown as the structural representation of a kind of preferred implementation of the structure of controlled DC power converter of the present invention.
Fig. 3 is shown as the structural representation of the DC power converter based on controller control of the present invention.
Fig. 4 is shown as the structural representation of a kind of preferred implementation of the controller for DC power converter of the present invention.
Element numbers explanation
1 DC power converter
11 controlled voltage transformation unit
111 inductance
112 controlled switchs
113 controlled transforming circuits
114 power switchs
115 utmost point pipes
116 drivers
117 second resistance
12 power stage unit
121 second electric capacity
122 the 3rd resistance
13 voltage stabilizing input units
131 first electric capacity
132 first resistance
2 controllers
21 comparing units
211 first subtracters
212 amplifiers
22 control units
221 follow filtration module
222 second subtracters
223 dividers
224 adjusters
225 comparators
Embodiment
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this specification below.
Refer to Fig. 1 to Fig. 3.Notice, appended graphic the illustrated structure of this specification, ratio, size etc., all contents in order to coordinate specification to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of the present invention without essence.
As shown in 1 figure, the invention provides a kind of controlled DC power converter, for adjust the electric current of described DC power converter 1 inside by the break-make of controlling controlled switch 112 wherein, so that the firm power that described DC power converter 1 is exported after boosting.Described DC power converter 1 at least comprises: controlled voltage transformation unit 11, power stage unit 12.
Preferably, as shown in Figure 2, described DC power converter 1 also comprises voltage stabilizing input unit 13.
Described voltage stabilizing input unit 13 is positioned at described controlled voltage transformation unit 11 front ends and is attached thereto, for the DC power supply of stable input.
Particularly, described voltage stabilizing input unit 13 comprises: the first electric capacity 131 being connected with described DC power supply; First resistance 132 in parallel with described the first electric capacity 131.Wherein, described the first electric capacity 131 is for the noise of the DC power supply of filtering input, so that stable main flow power supply to be provided.
Described controlled voltage transformation unit 11 has paired controlled switch 112, changes the shifting savings of the inductance 111 that described controlled switch 112 connects separately, to export the DC power supply after transformation for the break-make based on described controlled switch 112; The control of the pulse signals that wherein, every a pair of described controlled switch is spent based on phase phasic difference 180 replaces break-make.
Particularly, described controlled switch 112 connects described inductance 111 separately, realize transformation by the shifting savings changing in described inductance 111, simultaneously, by providing phase place to differ all the time a pulse signals of 180 degree to every a pair of described controlled switch 112, when realizing the shifting savings minimizing in this described inductance 111 that controlled switch 112 in controlled switch 112 is connected, the increase of the shifting savings in the described inductance 111 that another controlled switch 112 connects, exports the DC power supply after transformation thus.
Preferably, as shown in Figure 2, described controlled voltage transformation unit 11 comprises: paired controlled transforming circuit 113.
Described controlled transforming circuit 113 at least comprises: the described inductance 111 being connected with one end of described voltage stabilizing input unit 13, the controlled switch 112 being connected with described inductance 111, and the diode 115 that is connected with described inductance 111 of anode one end.Preferably, the resistance value of described the second resistance 117 is between 10m Ω～15m Ω.
Wherein, described controlled switch 112 comprise any can in check switch, preferably, described controlled switch 112 comprises: power switch 114, the second resistance 117 and driver 116.
The collector electrode of described power switch 114 connects described inductance 111, and the base stage of described power switch 114 connects described driver 116, and the emitter of described power switch 114 connects described the second resistance 117; Wherein, the break-make of the power switch 114 that described driver 116 connects for the pulse signal control based on received, the pulse signal phase phasic difference all the time 180 that the every pair of described driver 116 receives is spent.
For example, described controlled voltage transformation unit 11 comprises a pair of controlled transforming circuit A and controlled transforming circuit B, the pulse signal t1 that driver a1 in described controlled transforming circuit A in controlled switch a receives is to be that high level, rear 1/2 cycle are low level in front 1/2 cycle, the upper jumping edge of described driver a1 based on high level, control the power switch a2 conducting connecting, so that described controlled switch a closure, the electric weight of storing in described inductance a3 is increased, thus, the electric current of the diode a4 output being connected with described inductance a3 is reduced; Then, described driver a1, based on low level lower jumping edge, controls the power switch a2 connecting and disconnects, so that described controlled switch a opens, the electric weight of storing in described inductance a3 is reduced, thus, the electric current of the diode a4 output being connected with described inductance a3 is increased;
Meanwhile, the pulse signal t2 that driver b1 in described controlled transforming circuit B in controlled switch b receives is to be that low level, rear 1/2 cycle are high level in front 1/2 cycle, described driver b1 is based on low level lower jumping edge, controlling the power switch b2 connecting disconnects, so that described controlled switch b opens, the electric weight of storing in described inductance b3 is reduced, thus, the electric current of the diode b4 output being connected with described inductance b3 is increased; Then, the upper jumping edge of described driver b1 based on high level, controls the power switch b2 conducting connecting, so that described controlled switch b closure, the electric weight of storing in described inductance b3 is increased, thus, the electric current of the diode b4 output being connected with described inductance b3 is reduced.
As can be seen here, within the cycle of a pulse signal, the control of described controlled transforming circuit A and the driver 116 of controlled transforming circuit B based on separately, has complementary curent change, so make described controlled voltage transformation unit 11 export the DC power supply after transformation.
Described power stage unit 12 is connected with described controlled voltage transformation unit 11, for the described DC power supply after transformation is stablized to processing, so that stable power stage to be provided.
Particularly, in described power stage unit 12, be provided with electrochemical capacitor, carry out filtering in order to the electric current that described controlled voltage transformation unit 11 is exported, to galvanic current source is provided.
Preferably, described power stage unit 12 comprises: the second electric capacity 121 being connected with the negative electrode of all described diodes 115, and contact one by one and multiple three resistance 122 in parallel with described the second electric capacity 121.Wherein, described the second electric capacity 121 is electrochemical capacitor, and the resistance of described the 3rd resistance 122 can be identical, also can be different.
For example, described the 3rd resistance 122 being connected with described the second electric capacity 121 is three, and is one another in series, and its resistance is followed successively by 190k Ω, 190k Ω and 2.5k Ω, take output dc voltage as 382.5V, power is the output of 1W.
It should be noted that, it should be appreciated by those skilled in the art that the resistance of the 3rd resistance 122 in above-mentioned power stage unit 12 is only for giving an example, but not limitation of the present invention.
The present invention also provides a kind of controller for above-mentioned DC power converter.As shown in Figure 3, described controller 2 is for controlling the break-make of above-mentioned DC power converter 1 controlled switch 112, so that described DC power converter 1 can change in real time the duty ratio of the pulse signal of controlling described controlled switch 112, the power of exporting to stablize described DC power converter 1 in the time being subject to external interference.
Described controller 2 comprises comparing unit 21 and control unit 22.
Described comparing unit 21 is connected with the power stage unit 12 in above-mentioned DC power converter 1, for comparing from the signal of telecommunication of described power stage unit 12 and default reference signal gathering, and obtains the error signal between the two.Wherein, described reference signal can be voltage signal, also can be current signal, in the present embodiment, described reference signal is voltage signal, gather and can be from the signal of telecommunication of described power stage unit 12 voltage signal or the current signal that described power stage unit 12 is exported, also can be voltage signal or the current signal of obtaining in the 3rd resistance 122 in described power stage unit 12, in the present embodiment, the described signal of telecommunication is the voltage signal that the 3rd resistance 122 places in described power stage unit 12 gather.
Particularly, as shown in Figure 4, described comparing unit 21 comprises: the first subtracter 211 and amplifier 212.
Described the first subtracter 211 is connected with the 3rd resistance 122 in described power stage unit 12, for the power supply signal at more described the 3rd resistance 122 places and the error of described reference signal, and output error signal.
For example, described reference signal is magnitude of voltage 2.5v voltage signal, the voltage signal that the voltage to earth value that described the 3rd resistance 122 places obtain is 2.4v, the error signal that described the first subtracter 211 is undertaken obtaining after subtraction by two magnitudes of voltage is that value is 0.1 signal of telecommunication.
Described amplifier 212 is connected with described the first subtracter 211, for described error signal is amplified and exported.
For example, described amplifier 212 is 10 times of amplifiers, and it is 1 error signal that the error signal that is 0.1 by value is enlarged into value.
Described control unit 22 is connected with the controlled switch 112 in described comparing unit 21 and described DC power converter 1, feeds back calculating for the signal of telecommunication and described error signal that the break-make of described controlled switch 112 is formed; And change the duty ratio of the pulse signal of predetermined period based on feeding back the result of calculating, and the described pulse signal after changing is transported to described controlled switch 112; Wherein, a pair of described control unit 22 that every a pair of described controlled switch 112 connects, exports based on this alternately break-make to described controlled switch 112 pulse signal that a pair of phase phasic difference 180 is spent.
Particularly, the quantity of described control unit 22 is identical with the quantity of described controlled switch 112, described in each, control unit 22 input all connects the output of described amplifier 212, another input of described control unit 22 connects a controlled switch 112, so that the signal of telecommunication and described error signal by described controlled switch 112 are simulated the curent change in the corresponding described inductance 111 of described controlled switch 112, and controlled amount, and described controlled quentity controlled variable and default waveform are compared, generate identical with described wave period, the pulse signal that duty ratio changes with described controlled quentity controlled variable, and described pulse signal is transported to described controlled switch 112.Wherein, the signal of telecommunication providing due to every a pair of described controlled switch 112 is that phase phasic difference 180 is spent, thus each to described controlled switch 112 the pulse signal phase phasic difference all the time 180 that corresponding control unit 22 is exported separately spend.
Preferably, described control unit 22 comprises: what be connected with described controlled switch 112 follows filtration module 221, feedback circuit and comparator 225.
In the present embodiment, described in follow filtration module 221 and comprise: the follower being connected with described controlled switch 112, and the filter being connected with described follower.
Wherein, described feedback circuit comprises: divider 223, adjuster 224, the second subtracter 222.Described in connecting, an input of described divider 223 follows filtration module 221, another input of described divider 223 connects the output of described adjuster 224, the output of described divider 223 connects an input of described the second subtracter 222, another input of described the second subtracter 222 connects described comparing unit 21, the output of described the second subtracter 222 connects the input of described adjuster 224, and the output of described adjuster 224 connects described comparator 225.Described adjuster 224 is preferably proportional and integral controller 224(PI adjuster).
Wherein, described comparator 225 is for the comparison of the waveform of the result calculated based on described feedback and described predetermined period, generates the identical and duty ratio of described predetermined period with the adjustable described pulse signal of described controlled quentity controlled variable, and described pulse signal is exported.The waveform of described predetermined period is preferably the sawtooth waveform of described predetermined period.
Particularly, described in follow filtration module 221 and obtain the current signal of described controlled switch 112, and by described current signal by follower and filter the saddle type ripple take the output cycle as 1/2 cycle, meanwhile, described the second subtracter 222, divider 223 and adjuster 224 form a feedback circuit, the controlled quentity controlled variable that this feedback circuit is exported described adjuster 224 feeds back to described divider 223, so that described saddle type ripple is divided by described controlled quentity controlled variable, the quotient obtaining is similar to the current instantaneous value in corresponding inductance 111, therefore the variation of described quotient is similar to the current waveform of corresponding inductance 111, again described current waveform and described error signal are carried out to subtraction, be adjusted the described controlled quentity controlled variable of described current waveform with this, and described controlled quentity controlled variable is transported to described comparator 225, waveform by described comparator 225 based on predetermined period is identical with relatively generating with the described sawtooth waveform cycle of described controlled quentity controlled variable, and the pulse signal that duty ratio changes with described controlled quentity controlled variable.
For example, control unit C is connected respectively a pair of controlled switch 112 with control unit D, described control unit C is also connected comparing unit 21 with control unit D, the current signal c of the control switch that described control unit C obtains is: the front half period is saddle type ripple, the later half cycle is calm shape, the second subtracter 222 in described control unit C, the error signal that the feedback circuit that divider 223 and adjuster 224 form is exported described current signal c and described comparing unit 21 is fed back calculating, and result and sawtooth waveform that feedback is calculated compare, take generate pulse signal as: the front half period is as high level, the later half cycle is low level rectangular wave,
Meanwhile, the current signal d of the control switch that described control unit D obtains is: the front half period is calm shape, later half cycle are saddle type ripple, the error signal that the feedback circuit that the second subtracter 222, divider 223 and the adjuster 224 in described control unit D forms is exported described current signal d and described comparing unit 21 is fed back calculating, and result and sawtooth waveform that feedback is calculated compare, the rectangular wave take the pulse signal that generates as: front half period as low level, later half cycle as high level.
The course of work of the described DC power converter 1 based on described controller 2 of the present invention is:
Voltage stabilizing input unit 13 in described DC power converter 1 carries out transporting to described controlled voltage transformation unit 11 after voltage stabilizing processing to inputted DC power supply, paired controlled switch 112 in described controlled voltage transformation unit 11 is based on synchronously, the pulse signal of phase phasic difference 180 carries out break-make, change thus the electric weight of storage in the inductance 111 that connected separately, the electric weight that an inductance 111 in every pair of inductance 111 is reduced is identical with the electric weight that another inductance 111 increases, export thus the DC power supply after transformation, by described power stage unit 12, the described DC power supply after transformation is stablized to processing again, so that the direct current output of power stability to be provided.
Meanwhile, three resistance 122 of described controller 2 from described DC power converter 1 is obtained voltage signal u
0, the each controlled switch 112 from described DC power converter 1 is obtained current signal i
s1, i
s2, then, by described voltage signal and default reference voltage u
refcarry out subtraction, to obtain error signal, described error signal is transported to respectively to the control unit 22 being connected with each controlled switch 112, make the second subtracter 222 in each control unit 22, the feedback circuit that divider 223 and adjuster 224 form feeds back calculating to described current signal and described error signal, with controlled amount, and described controlled quentity controlled variable and sawtooth waveforms are separately compared, the instantaneous value that is greater than described sawtooth waveforms when the instantaneous value of described controlled quentity controlled variable is exported high level, otherwise, output low level, change thus the duty ratio of described pulse signal, the pulse signal PWM1 spending to be output into right phase phasic difference 180, PWM2.
In sum, the 3rd resistance in DC power converter based on described controller control of the present invention, comparing unit in described controller, driver in control unit and described DC power converter forms Voltage loop, simultaneously, each controlled switch in described DC power converter, driver in described control unit and described DC power converter forms electric current loop, described Voltage loop and electric current loop can provide the voltage of described DC power converter in real time to described controller, curent change, simultaneously, described controller is based on voltage, the duty ratio of the pulse signal to described driver output is adjusted in the variation of electric current in real time, can provide stable power output at described DC power converter during in practical application thus,
In addition, described controller utilizes the business of the controlled quentity controlled variable of current signal that controlled switch provides and the output of described adjuster to react the curent change situation in corresponding inductance, can, without add current sample element in described DC power converter, reduce the cost of described DC power converter.
So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (10)
1. a controlled DC power converter, is characterized in that, at least comprises:
There is the controlled voltage transformation unit of paired controlled switch, change the shifting savings of the inductance that described controlled switch connects separately for the break-make based on described controlled switch, to export the DC power supply after transformation; Wherein, the control of the pulse signals of every a pair of described controlled switch based on 180 ° of phase place phase shifts replaces break-make;
The power stage unit being connected with described controlled voltage transformation unit, for stablizing processing by the described DC power supply after transformation, so that stable power stage to be provided.
2. DC power converter according to claim 1, is characterized in that, described controlled DC power converter also comprises:
The voltage stabilizing input unit that is positioned at described controlled voltage transformation unit front end and is attached thereto, for the DC power supply of stable input.
3. DC power converter according to claim 2, is characterized in that, described voltage stabilizing input unit comprises: the first electric capacity being connected with described DC power supply; The first resistance with described the first Capacitance parallel connection.
4. DC power converter according to claim 2, is characterized in that, described controlled voltage transformation unit comprises: paired controlled transforming circuit;
Described controlled transforming circuit at least comprises: the described inductance being connected with one end of described voltage stabilizing input unit, the described controlled switch being connected with described inductance, and the diode that is connected with described inductance of anode one end.
5. DC power converter according to claim 4, is characterized in that, described controlled switch at least comprises: power switch, the second resistance and driver;
Wherein, the collector electrode of described power switch connects described inductance, and the base stage of described power switch connects described driver, and the emitter of described power switch connects described the second resistance;
Wherein, the break-make of the power switch that described driver connects for pulse signal control based on received, 180 ° of the phase place phase shifts of the pulse signal that the every pair of described driver receives.
6. DC power converter according to claim 4, is characterized in that, described power stage unit comprises: the second electric capacity being connected with the negative electrode of all described diodes, and one by one series winding and with multiple the 3rd resistance of described the second Capacitance parallel connection.
7. for a controller for DC power converter, it is characterized in that, at least comprise:
The comparing unit being connected with the power stage unit in DC power converter as described in arbitrary in claim 1 to 6, for comparing from the signal of telecommunication of described power stage unit and default reference signal gathering, and obtain the error signal between the two;
The control unit being connected with the controlled switch in described comparing unit and described DC power converter, feeds back calculating for the signal of telecommunication and described error signal that the break-make of described controlled switch is formed; And change the duty ratio of the pulse signal of predetermined period based on feeding back the result of calculating, and the described pulse signal after changing is transported to described controlled switch; Wherein, a pair of described control unit that every a pair of described controlled switch connects, based on this pulse signals that replaces 180 ° of break-make output phase phase shifts to described controlled switch.
8. controller according to claim 7, is characterized in that, described comparing unit comprises:
With first subtracter that the 3rd resistance is connected in described power stage unit, for more described the 3rd power supply signal at resistance place and the error of described reference signal, and output error signal;
The amplifier being connected with described subtracter, for being amplified described error signal exported.
9. controller according to claim 7, is characterized in that, described control unit comprises:
What be connected with described controlled switch follows filtration module, feedback circuit and comparator;
Wherein, described feedback circuit comprises: divider, adjuster, the second subtracter; Described in connecting, an input of described divider follows filtration module, another input of described divider connects the output of described adjuster, the output of described divider connects an input of described the second subtracter, another input of described the second subtracter connects described comparing unit, the output of described the second subtracter connects the input of described adjuster, and the output of described adjuster connects described comparator;
Described comparator, the comparison for the result calculated based on described feedback with the waveform of predetermined period, generate described predetermined period and duty ratio with the adjustable described pulse signal of result of described feedback calculating, and described pulse signal is exported.
10. the DC power converter being controlled by the controller, is characterized in that: at least comprise:
As the DC power converter as described in arbitrary in claim 1 to 6; And
Be connected with described DC power converter as the controller as described in arbitrary in claim 7 to 9.
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| CN1588773A (en) * | 2004-07-08 | 2005-03-02 | 浙江大学 | Boost type active interlaced parallel soft switch circuit |
| CN201018410Y (en) * | 2007-03-05 | 2008-02-06 | 浙江大学 | Active clamp zero voltage soft switch high-gain boost type interleaving parallel convertor |
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