CN1067500C - Power supply unit - Google Patents
Power supply unit Download PDFInfo
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- CN1067500C CN1067500C CN97115283A CN97115283A CN1067500C CN 1067500 C CN1067500 C CN 1067500C CN 97115283 A CN97115283 A CN 97115283A CN 97115283 A CN97115283 A CN 97115283A CN 1067500 C CN1067500 C CN 1067500C
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- short circuit
- mentioned
- control signal
- short
- reactance coil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention provides a power supply unit which has a simple structure and low cost and can prevents untoward noise from being made by short circuiting of a reactor, the zero crossing of an AC voltage of an AC power supply is detected by zero crossing detector, after which a power factor improvement pulse is generated by a drive signal generator. The power factor improvement pulse is applied to short circuit element driver to drive a short circuit element to short circuit the AC power supply via the reactor and the first diode bridge, improving the power factor of the power unit. After the generation of the power factor improvement pulse, a noise reduction pulse of a very small pulse width is fed from the drive signal generator to short circuit elementto short circuit the AC power supply via the reactor and the first diode bridge.
Description
The present invention relates to have the high electrical source power factor that improved, be the supply unit of direct voltage, specifically, relate to reduce the supply unit of handling the noise that produces because of the improvement of electrical source power factor ac voltage rectifier.
In order to take out more active power from supply unit, to improve electrical source power factor is effective way.For this reason, proposed to improve simply the method for electrical source power factor in the prior art.In addition,, the higher harmonic current of power supply to be solved is always in recent years reduced by improving electrical source power factor, also can be corresponding to higher harmonic current restriction both domestic and external.
Improve the existing method of the power factor of supply unit, for example have the Japanese patent gazette spy to open disclosed method flat 2-299470 number.In this method, only between AC-input voltage is by the suitable short-term after zero point in, connect switch element, with the AC power short circuit,, improve electrical source power factor by reactance coil with this conduction period that enlarges source current.
Another kind of electrical source power factor improvement method is opened flat 7-7946 number openly by the spy, similarly, from the zeroaxial moment of alternating voltage, after predetermined time of delay, makes switch element connect the scheduled time in this method, improves power with this.
Above-mentioned existing power-factor improvement method, all be from zero point of alternating voltage by constantly, pass through suitable time of delay after, make the AC power short circuit by reactance coil with the scheduled time, with this angle of flow that enlarges current waveform, improve power.In these methods, owing to make the short circuit of reactance astragal, reactance coil can produce " creaking-" harsh noise like this.
In order to prevent this noise, the rigidity that must improve reactance coil is carried out sound insulation processing etc. to suppress noise around the perhaps topped firmly reactance coil.Adopt above-mentioned its anti-noise method to draw cost is increased.In addition, when these its anti-noise methods of employing, the reliability that also must solve material therefor reaches to be used and the problem of variation etc. all the year round.
The present invention makes in view of the above problems, and its purpose is to provide a kind of supply unit, and this supply unit can be with simple structure, reduce the thorn ear noise that the short circuit because of reactance coil produces at low cost.
To achieve these goals, the present invention takes following technical scheme:
A kind of supply unit, having becomes the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism to the ac voltage rectifier from AC power, it is characterized in that also having:
The load-side of above-mentioned reactance coil, can be by above-mentioned reactance coil with the switching circuit of power supply short circuit;
The short circuit controlling organization with the short circuit control signal of the short circuit of control said switching circuit, non-short circuit action, is supplied with said switching circuit,
Above-mentioned short circuit controlling organization is supplied with said switching circuit with the 1st short circuit control signal and the 2nd short circuit control signal, described the 1st short circuit control signal is to have passed through between the predetermined short-term after the zero point at alternating voltage, the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 2nd short circuit control signal be by above-mentioned the 1st short circuit control signal with power supply short circuit after, with than during shorter between above-mentioned predetermined short-term, the control said switching circuit is by above-mentioned reactance coil with power supply short circuit.
Described supply unit is characterized in that, above-mentioned short circuit controlling organization with respect to the once output of above-mentioned the 1st short circuit control signal, and is exported the one or many that carries out of the 2nd short circuit control signal.
Described supply unit is characterized in that, above-mentioned short circuit controlling organization with respect to the repeatedly output of above-mentioned the 1st short circuit control signal, and carries out one or many output with the 2nd short circuit control signal.
Described supply unit is characterized in that, above-mentioned short circuit controlling organization with respect to the output each time of the output of the several times of above-mentioned the 1st short circuit control signal, carries out above-mentioned the 2nd short circuit control signal once or several times output.
A kind of supply unit, having the AC voltage conversion from AC power is the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism, it is characterized in that also having:
The load-side of above-mentioned reactance coil, can be by above-mentioned reactance coil with the switching circuit of power supply short circuit;
The short circuit controlling organization with the short circuit control signal of the short circuit of control said switching circuit, non-short circuit action, is supplied with said switching circuit,
Above-mentioned short circuit controlling organization is supplied with said switching circuit with the 1st short circuit control signal, the 2nd short circuit control signal and the 3rd short circuit control signal, described the 1st short circuit control signal is to have passed through between the predetermined short-term after the zero point at alternating voltage, the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 2nd short circuit control signal is after by above-mentioned the 1st short circuit control signal power supply short circuit, with than during shorter between above-mentioned predetermined short-term, and the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 3rd short circuit control signal is after above-mentioned the 1st short circuit control signal is with power supply short circuit, with than during shorter between above-mentioned predetermined short-term, and the control said switching circuit, by above-mentioned reactance coil with power supply short circuit.
Described supply unit, it is characterized in that, between by the above-mentioned short-term of the above-mentioned the 2nd or the 3rd short circuit control signal with power supply short circuit, and during the non-short circuit between the short circuit action of the short circuit action of the said switching circuit that produces by above-mentioned the 1st short circuit control signal and the said switching circuit that produces by the above-mentioned the 2nd or the 3rd short circuit control signal, be the value of setting for according to the natural frequency decision of above-mentioned reactance coil.
Described supply unit, it is characterized in that, above-mentioned short circuit controlling organization has drive signal generating mechanism and driving mechanism, above-mentioned drive signal generating mechanism generation drive signal, this drive signal have by the pulse duration during each short circuit that is equivalent to the generation of the 1st, the 2nd and the 3rd short circuit control signal; Above-mentioned driving mechanism is accepted the drive signal from this drive signal generating mechanism, according to the above-mentioned switching mechanism of this drive.
Described supply unit, it is characterized in that, between described short-term, and during the non-short circuit between the short circuit action of the said switching circuit that the short circuit action of the said switching circuit that is produced by above-mentioned the 1st short circuit control signal and the above-mentioned the 2nd or the 3rd short circuit control signal produce by the above-mentioned the 2nd or the 3rd short circuit control signal short circuit power supply, the value that is set at time of delay of having considered said switching circuit and above-mentioned driving mechanism and determines according to the natural frequency of above-mentioned reactance coil.
Described supply unit is characterized in that, the translation circuit of using motor for the compressor that drives conditioner is supplied with in the output of above-mentioned supply unit.
A kind of supply unit, having becomes the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism to the ac voltage rectifier from AC power; It is characterized in that also having:
The load-side of above-mentioned reactance coil, can be by above-mentioned reactance coil with the switching circuit of power supply short circuit;
The short circuit controlling organization with the short circuit control signal of the short circuit of control said switching circuit, non-short circuit action, is supplied with said switching circuit,
Above-mentioned short circuit controlling organization is exported the 1st short circuit control signal and the 2nd short circuit control signal, and described the 1st short circuit control signal is to have passed through between the predetermined short-term after the zero point at alternating voltage, the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 2nd short circuit control signal is before above-mentioned the 1st short circuit control signal is with power supply short circuit, with than during shorter between above-mentioned predetermined short-term, and the control said switching circuit, by above-mentioned reactance coil with power supply short circuit.
Described supply unit is characterized in that, above-mentioned short circuit controlling organization with respect to the once output of above-mentioned the 1st short circuit control signal, is exported above-mentioned the 2nd short circuit control signal once or several times.
Described supply unit is characterized in that, above-mentioned short circuit controlling organization with respect to the several times output of above-mentioned the 1st short circuit control signal, is exported above-mentioned the 2nd short circuit control signal once or several times.
Described supply unit is characterized in that, above-mentioned short circuit controlling organization with respect to the signal each time that the several times of above-mentioned the 1st short circuit control signal are exported, is exported above-mentioned the 2nd short circuit control signal once or several times.
Described supply unit is characterized in that, the translation circuit of using motor for the compressor that drives conditioner is supplied with in the output of above-mentioned supply unit.
The present invention takes following technical scheme; The supply unit of the present invention that claim is put down in writing, having becomes the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism to the ac voltage rectifier from AC power; It is characterized in that also having the 1st short circuit mechanism and the 2nd short circuit mechanism; The 1st short circuit mechanism has passed through between the predetermined short-term after the zero point at alternating voltage, by reactance coil with the AC power short circuit; The 2nd short circuit mechanism in the short circuit of the 1st short circuit mechanism after the AC power, with than during shorter between above-mentioned predetermined short-term, by reactance coil with the AC power short circuit.
In the invention of being put down in writing, passed through between the predetermined short-term after the zero point at alternating voltage, passed through the reactance coil short circuit after the AC power in order to improve power factor, during short, by reactance coil with the AC power short circuit, so, can not only improve power factor, and can be with simple structure, low cost, prevent the noise that the short circuit of reactance coil produces effectively.
The supply unit of being put down in writing of the present invention, having becomes the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism to the ac voltage rectifier from AC power; It is characterized in that also having the 1st short circuit mechanism and the 2nd short circuit mechanism; The 1st short circuit mechanism has passed through between the predetermined short-term after the zero point at alternating voltage, by reactance coil with the AC power short circuit; The 2nd short circuit mechanism before the 1st short circuit mechanism short circuit AC power, with than during shorter between above-mentioned predetermined short-term, by reactance coil with the AC power short circuit.
In the described supply unit of the present invention, because between alternating voltage is by the predetermined short-term after zero point, in order to improve power factor by reactance coil with the AC power short circuit before, during short, by reactance coil with the AC power short circuit, so, not only can improve power factor, and can be with simple structure, low cost, prevent the noise that the short circuit because of reactance coil produces effectively.
Described supply unit of the present invention is to increase following feature on the above invention basis, that is, with respect to the first short circuit action of the 1st short circuit mechanism, the short circuit action of the 2nd short circuit mechanism is carried out once or several times.
In described invention, owing to move with respect to the first short circuit of the 1st short circuit mechanism, the short circuit action of the 2nd short circuit mechanism is carried out once or several times, so, not only power factor can be improved, and the noise of the short circuit generation of reactance coil can be prevented effectively.
Described supply unit of the present invention is to increase following feature on above-mentioned described invention basis, that is, with respect to the several times short circuit action of the 1st short circuit mechanism, the short circuit action of the 2nd short circuit mechanism is carried out once or several times.
In the described invention, owing to move with respect to the several times short circuit of the 1st short circuit mechanism, the short circuit action of the 2nd short circuit mechanism is carried out once or several times, so, not only power factor can be improved, and the noise of the short circuit generation of reactance coil can be prevented effectively.
Apparatus of the present invention of being put down in writing are to increase following feature on above-mentioned described invention basis, that is, with respect to the action each time that the several times short circuit of the 1st short circuit mechanism is moved, the short circuit action of the 2nd short circuit mechanism is carried out once or several times.
In described invention, because with respect to the action each time that the several times short circuit of the 1st short circuit mechanism is moved, the short circuit action of the 2nd short circuit mechanism is carried out once or several times, so, not only power factor can be improved, and the noise of the short circuit generation of reactance coil can be prevented conscientiously.
The supply unit of the present invention of record, having the AC voltage conversion from AC power is the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism; It is characterized in that also having the 1st short circuit mechanism, the 2nd short circuit mechanism and the 3rd short circuit mechanism; The 1st short circuit mechanism has passed through between the predetermined short-term after the zero point at alternating voltage, by reactance coil with the AC power short circuit; The 2nd short circuit mechanism before the 1st short circuit mechanism short circuit AC power, with than during shorter between above-mentioned predetermined short-term, by reactance coil with the AC power short circuit; The 3rd short circuit mechanism in the short circuit of the 1st short circuit mechanism after the AC power, with than during shorter between above-mentioned predetermined short-term, by reactance coil with the AC power short circuit.
In the described invention, owing to passed through between the predetermined short-term after the zero point at alternating voltage, by reactance coil with before and after the AC power short circuit, between short-term, by reactance coil with the AC power short circuit, so, not only can improve power, and can and prevent the noise that short circuit was produced of reactance coil effectively with simple structure, low cost.
The supply unit of the present invention of record, be on each basis of described invention, to increase following feature, promptly, the the above-mentioned the 2nd or the 3rd short circuit mechanism makes between the short-term of AC power short circuit, and during the non-short circuit between the short circuit action of the short circuit of the 1st short circuit mechanism action and the 2nd or the 3rd short circuit mechanism, be that the natural frequency according to reactance coil determines.
In the described invention, because during the short circuit of the weak point of the 2nd or the 3rd short circuit mechanism and during the non-short circuit, be according to the natural frequency decision of reactance coil, so, can prevent the noise that short circuit produced of reactance coil conscientiously.
Described supply unit is to increase following feature at each on the above invention basis, that is, above-mentioned the 1st, the 2nd and the 3rd short circuit mechanism has switching mechanism, drive signal generating mechanism and driving mechanism; Switching mechanism by reactance coil with the AC power short circuit; Drive signal generating mechanism generation drive signal, this drive signal have the pulse duration that is equivalent to during each short circuit of the 1st, the 2nd and the 3rd short circuit mechanism; Driving mechanism is accepted the drive signal from the drive signal generating mechanism, according to the above-mentioned switching mechanism of this drive.
In described invention, because by drive signal generating mechanism generation drive signal, this drive signal has the pulse duration that is equivalent to during each short circuit of the 1st, the 2nd and the 3rd short circuit mechanism, pass through the drive mechanism switching mechanism by this drive signal, make the AC power short circuit by switching mechanism by reactance coil, so, can prevent the noise that the short circuit of reactance coil produces conscientiously with better simply circuit structure.
The supply unit of being put down in writing of the present invention, be in foregoing invention, to increase following feature, promptly, make between the short-term of AC power short circuit by the 2nd or the 3rd short circuit mechanism and the short circuit action of the short circuit of the 1st short circuit mechanism action and the 2nd or the 3rd short circuit mechanism between non-short circuit during, be to have considered the time of delay of above-mentioned switching mechanism and driving mechanism and determine according to the natural frequency of reactance coil.
In described invention, owing to considered time of delay of switching mechanism and driving mechanism,, determine during the short circuit of weak point of the 2nd or the 3rd short circuit mechanism and during the non-short circuit according to the natural frequency of reactance coil, so, can prevent the noise that short circuit produced of reactance coil conscientiously.
The supply unit of being put down in writing of the present invention is to increase following feature on described each invention basis,, has feed mechanism that is, and this feed mechanism is the direct voltage air supply adjusting device of the rectification mechanism rectification of formation conditioner power supply unit.
In described invention, owing to constitute the power supply unit of conditioner with supply unit of the present invention, so, provide not only and can improve power factor, and provide can be low-cost and prevent the conditioner of noise effectively.
The present invention has positive effect:
As mentioned above, according to the present invention who is put down in writing, owing to passed through between the predetermined short-term after the zero point at alternating voltage, passed through the reactance coil short circuit after the AC power in order to improve power factor, during short, by reactance coil short circuit AC power, so, can not only improve power factor, and can be with simple structure, low cost, prevent the noise that the short circuit of reactance coil produces effectively.Especially aspect structure, only increasing by the 2nd short circuit control signal on the 1st short circuit control signal basis gets final product, specifically, this increase is except the power-factor improvement pulse, reduces noise reduction pulse as long as add, can finish by simple circuit change or increase, so, not needing vibration-proof material, acoustic material etc., price increases hardly, and the reliability height, use over a long time also not change.
According to the present invention who is put down in writing, because between alternating voltage is by the predetermined short-term after zero point, in order to improve power factor by reactance coil with the AC power short circuit before, during short, by reactance coil with the AC power short circuit, so, not only can improve power factor, and can be with simple structure, low cost, prevent the noise that the short circuit because of reactance coil produces effectively.
According to the present invention who is put down in writing, because with respect to the first short circuit action of the 1st short circuit control signal, the short circuit action of the 2nd short circuit control signal is carried out once or several times, so, not only power factor can be improved, and the noise of the short circuit generation of reactance coil can be prevented effectively.
According to the present invention who is put down in writing, because with respect to the several times short circuit action of the 1st short circuit control signal, the short circuit action of the 2nd short circuit control signal is carried out once or several times, so, not only power factor can be improved, and the noise of the short circuit generation of reactance coil can be prevented effectively.
According to the present invention who is put down in writing, because with respect to the action each time that the several times short circuit of the 1st short circuit control signal is moved, the short circuit action of the 2nd short circuit control signal is carried out once or several times, so, not only power factor can be improved, and the noise of the short circuit generation of reactance coil can be prevented conscientiously.
According to the present invention who is put down in writing, owing to passed through between the predetermined short-term after the zero point at alternating voltage, by reactance coil with before and after the AC power short circuit, between short-term, by reactance coil with the AC power short circuit, so, not only can improve power, and can and prevent the noise that short circuit was produced of reactance coil effectively with simple structure, low cost.
According to the present invention who is put down in writing, because during the short circuit of the 2nd or the 3rd short circuit control signal and during the non-short circuit, be according to the decision of the natural frequency of reactance coil, so, can prevent the noise that short circuit produced of reactance coil conscientiously, simultaneously, determined reactance coil after, appropriate state does not change because of supply frequency, load etc.
According to the present invention who is put down in writing, because by drive signal generating mechanism generation drive signal, this drive signal has the pulse duration during each short circuit that is equivalent to the 1st, the 2nd and the 3rd short circuit control signal, pass through the drive mechanism switching mechanism by this drive signal, make the AC power short circuit by switching mechanism by reactance coil, so, can prevent the noise that the short circuit of reactance coil produces conscientiously with better simply circuit structure.
According to the present invention who is put down in writing, owing to considered time of delay of switching mechanism and driving mechanism,, determine during the short circuit of weak point of the 2nd or the 3rd short circuit mechanism and during the non-short circuit according to the natural frequency of reactance coil, so, can prevent the noise that short circuit produced of reactance coil conscientiously.
According to the present invention who is put down in writing, owing to constitute the power supply unit of conditioner with supply unit of the present invention, so, provide not only and can improve power factor, and can be low-cost and prevent the conditioner of noise effectively.
Below embodiments of the present invention will be described in detail with reference to the accompanying drawings:
Fig. 1 is the circuit structure figure of one embodiment of the invention supply unit.
Fig. 2 represents the signal waveform of each one of supply unit shown in Figure 1.
Fig. 3 represents the signal waveform of the present invention the 2nd each one of embodiment supply unit.
Fig. 4 is the figure of the circuit structure of the present invention's the 3rd embodiment supply unit.
Fig. 5 represents the signal waveform of the present invention the 4th each one of embodiment supply unit.
Fig. 6 represents the signal waveform of the present invention the 5th each one of embodiment supply unit.
Fig. 7 is the figure that the structure of the drive signal generating mechanism that produces power-factor improvement pulse and noise reduction pulse is described.
Fig. 8 represents the duration of short circuit that power-factor improvement pulse and noise reduce intermittent time between the pulse and noise reduces pulse.
Power-factor improvement pulse when Fig. 9 represents noise to reduce pulse be 1,2, n and noise pulse reduce the intermittent time between the pulse and the duration of short circuit of noise reduction pulse.
Figure 10 represents that i noise reduces the rising of pulse and the definition constantly that descends.
Figure 11 is the relation of the power-factor improvement pulse of expression noise when reducing pulse and being 2, intermittent time, duration of short circuit.
Figure 12 represents with respect to the turn-on delay time of the delay of short-circuit component driving mechanism, short-circuit component and cuts off time of delay, to intermittent time and duration of short circuit modification method.
Structure when Figure 13 represents that supply unit of the present invention is used for conditioner.
Figure 14 be equipped with in the expression supply unit of the present invention conditioner and in the noise properties curve of conditioner that noiselessness reduces the existing power supply device of function is housed.
Below, with reference to the description of drawings embodiments of the invention.
Fig. 1 is the circuit structure figure of one embodiment of the invention supply unit.Fig. 2 represents the signal waveform of each one of supply unit shown in Figure 1.Supply unit shown in Figure 1, has the reactance coil 2 that an end is connected with an output of AC power 1, the other end of this reactance coil 2 is connected with each side's input of the 1st diode bridge 3 and the 2nd diode bridge 5 respectively, the 1st diode bridge 3 is made of 4 diodes, its sense of current unanimity, the 2nd diode bridge 5 constitutes full-wave rectifier.The 1st is connected with another output of AC power 1 with each the opposing party's input of the 2nd diode bridge 3,5.
Two outputs of the 1st diode bridge 3 are connected between the collector electrode and emitter of short-circuit component 4, this short-circuit component 4 for example is the switch element that is made of bipolar transistor, IGBT, MOSFET etc., when short-circuit component 4 is connected, with AC power 1 short circuit, can improve the electrical source power factor of supply unit by the 1st diode bridge 3 and reactance coil 2 with this.The emitter of short-circuit component 4 is connected with short-circuit component driving mechanism 12, drives short-circuit component 4 by this short-circuit component driving mechanism 12, makes short-circuit component 4 become on-state.
Two outputs of AC power 1 are connecting the zero cross detection mechanism 10 that for example is made of optical coupler, current transformer etc., this zero cross detection mechanism 10 detects the alternating voltage of AC power 1, promptly has among Fig. 2 sine-shaped alternating voltage shown in the label 21 by being the moment of zero cross point zero point, and this detection signal is supplied with drive signal generating mechanism 11.
Drive signal generating mechanism 11 for example is made of microcomputer, special circuit etc., power-factor improvement pulse and peak pulse duration this power-factor improvement pulse much smaller noise of generation shown in label 24a among Fig. 2 and 26a difference reduces pulse, and these power-factor improvement pulse 24a and noise are reduced pulse 26a supply short-circuit component driving mechanism 12.Subtract pulse 26a falls in short-circuit component driving mechanism 12 these power-factor improvement pulse 24a of response and noise, and short-circuit component 4 is driven becomes on-state, like this, makes AC power 1 short circuit by the 1st diode bridge 3 and reactance coil 2.Its result, when power-factor improvement pulse 24a connects short-circuit component 4, by the 1st diode bridge 3 and reactance coil 2 with AC power 1 short circuit, can improve electrical source power factor, simultaneously, when noise reduces pulse 26a short-circuit component 4 is connected, the noise that produces in the time of can reducing reactance coil 2 short circuits in order to improve electrical source power factor.
The output of the 2nd diode bridge 5 is connected with load 9 with electrochemical capacitor 6,7,8 by level and smooth, like this, alternating voltage from AC power 1 is reached smoothly with behind 6,7,8 times of voltage commutations of electrochemical capacitor, as direct voltage supply load 9 by the 2nd diode bridge 5.
In the supply unit of above-mentioned structure, when AC power 1 has been supplied with among Fig. 2 the alternating voltage shown in the label 21, this alternating voltage is supplied with by the 2nd diode bridge 5 and the level and smooth times voltage rectifying circuit that constitutes with electrochemical capacitor 6,7,8 by reactance coil 2, supply with load 9 as direct voltage, simultaneously, when this alternating voltage passed through zero point, this zero point, drive signal generating mechanism 11 was by this detection signal drives by being detected by zero cross detection mechanism 10.
When drive signal generating mechanism 11 is detected the output signal driving zero point of zero cross detection mechanism 10, after passing through the zero point of AC power, produce power-factor improvement pulse 24a shown in Figure 2 and noise and reduce pulse 26a.Power-factor improvement pulse 24a and noise reduce pulse 26a and by short-circuit component driving mechanism 12 short-circuit component 4 are driven and become on-state, like this, by the 1st diode bridge 3 and reactance coil 2 with AC power 1 short circuit.Its result, when short-circuit component 4 responding power factors improve pulse 24a and pass through reactance coil 2 with AC power 1 short circuit, enlarge the conduction period of source current, improve the electrical source power factor of supply unit, in addition, when short-circuit component 4 response noises reduce pulse 26a action, can reduce the noise of reactance coil 2.This noise be reactance coil 2 by power-factor improvement pulse 24a short circuit after, the short circuit of reactance coil 2 is removed, the noise when short circuit current cuts off.
Specifically, as shown in Figure 2, source current waveform before the label 22 expression power-factor improvements, label 23 expressions have improved the source current waveform after the power factor by power-factor improvement pulse 24a, this shows, the conduction period of the source current after the improvement enlarges, so electrical source power factor improves.After power-factor improvement pulse 24a, and then the noise that output pulse width is very little reduces pulse 26a, make short-circuit component 4 short circuits, like this, reactance coil 2 is during by power-factor improvement pulse 24a short circuit, the noise of the reactance coil when short circuit current cuts off can be lowered, and the waveform of source current and electrical source power factor are almost constant.
Fig. 3 represents each signal waveform of the present invention's the 2nd embodiment supply unit.The difference of the 2nd embodiment and above-mentioned the 1st embodiment only is the reversed in order that power-factor improvement pulse 24a and noise reduce pulse 26a, and other structure and effect are all identical with the 1st embodiment.
The circuit structure of the 2nd embodiment and shown in Figure 1 basic identical, but the order of occurrence that power-factor improvement pulse 24a that takes place from drive signal generating mechanism 11 and noise reduce pulse 26a is opposite, promptly as shown in Figure 3, the noise that takes place earlier between short-term reduces pulse 26a, and power-factor improvement pulse 24a takes place again.In addition, in the signal waveforms of Fig. 3, with Fig. 2 similarly, label 21 and 22 is represented the alternating voltage waveform of AC power 1 of AC power 1 and the current waveform before the power-factor improvement respectively, the current waveform after label 25 expressions carrying out power-factor improvement and the noise improvement.
Among the 2nd embodiment, making noise reduce pulse 26a took place before power-factor improvement pulse 24a, by power-factor improvement pulse 24a by reactance coil 2 with AC power 1 short circuit before, earlier reduce pulse 26a and makes reactance coil 2 instantaneous short circuit, the noise the when short circuit current that can reduce reactance coil 2 cuts off by noise.And then by power-factor improvement pulse 24a by reactance coil 2 with AC power 1 short circuit, like this, shown in the label 25 of Fig. 3, enlarge the conduction period of source current, can improve electrical source power factor.
Fig. 1 is to the 1st and the 2nd embodiment shown in Figure 3, making noise reduce pulse 26a took place before or after power-factor improvement pulse 24a, like this, by reactance coil 2 with AC power 1 short circuit, the noise the when short circuit current that can reduce reactance coil 2 cuts off or connects.If before power-factor improvement pulse 24a and noise all takes place afterwards reduce pulse 26a, the noise the when short circuit current that then more can reduce reactance coil 2 cuts off and connects.
Fig. 4 represents the circuit structure of the present invention's the 3rd embodiment supply unit.In the supply unit shown in this figure, the side's output that constitutes the 2nd diode bridge 5 of full-wave rectifier is connecting an end of reactance coil 2, between the opposing party's output of the other end of reactance coil 2 and the 2nd diode bridge 5, the collector and emitter that is connecting the short-circuit component 4 that constitutes by switching transistor, when this short-circuit component 4 is connected, by reactance coil 2 and the 2nd diode bridge 5 with AC power 1 short circuit.The other end of reactance coil 2 by anti-backflow with diode 13 with smoothly with electrochemical capacitor 8 and load and 9 be connected.The effect of diode 13 is, when short-circuit component 4 connect, by reactance coil 2 and the 2nd diode bridge 5 during with AC power 1 short circuit, make level and smooth with electrochemical capacitor 8 by short-circuit component 4 short circuits.
Be connected the zero cross detection mechanism 10 of 1 liang of output of AC power, drive signal generating mechanism 11, the structure of short-circuit component driving mechanism 12 and effect, with shown in Figure 1 identical, as shown in Figure 2, power-factor improvement pulse 24a takes place and reaches the and then noise reduction pulse 26a of this power-factor improvement pulse 24a in drive signal generating mechanism 11, this this pulse makes becomes on-state by short-circuit component driving mechanism 12 with short-circuit component 4 drivings, thus, with the 1st embodiment similarly, can improve electrical source power factor by power-factor improvement pulse 24a, the noise when reducing short circuit current that pulse 26a reduces reactance coil 2 and cut off by noise.In addition, change the order that this power factor pulse 24a and noise reduce pulse 26a, as illustrated in fig. 3, after noise reduction pulse 26a takes place earlier in drive signal generating mechanism 11, power-factor improvement pulse 24a takes place again, these pulses make becomes on-state by short-circuit component driving mechanism 12 with short-circuit component 4 drivings, with the 2nd embodiment similarly, noise in the time of can being reduced short circuit current that pulse 26a reduces reactance coil 2 and cut off by noise improves electrical source power factor by the power-factor improvement pulse again.
Fig. 5 represents each signal waveform of the present invention's the 4th embodiment supply unit.The difference of the 4th embodiment and above-mentioned the 1st embodiment only is several (being 2 in the present embodiment) noises to take place reduce pulse 26a, 26b after power-factor improvement pulse 24a.Other structure and effect are identical with the 1st embodiment.Promptly, among Fig. 5, label 21,22 is represented the waveform and the preceding current waveform of power-factor improvement of the alternating voltage of AC power 1 respectively, and the current waveform after power-factor improvement and the noise improvement has been carried out in 27 expressions, 24a represents the power-factor improvement pulse, and 26a, 26b represent that noise reduces pulse.
Several noises take place by drive signal generating mechanism 11 to reduce pulse 26a, 26b in the supply unit circuit structure of the 4th embodiment and Fig. 1 or shown in Figure 4 basic identical, difference after power-factor improvement pulse 24a.
Among the 4th embodiment, several noises take place after power-factor improvement pulse 24a reduce pulse 26a, 26b, improved power factor by power-factor improvement pulse 24a after, the noise that the short circuit current that can reduce reactance coil 2 more effectively produces when cutting off.In addition, also can change above order, that is, as illustrated in fig. 3, several noises take place before power-factor improvement pulse 24a reduce pulse 26a, 26b, at this moment, the noise the when short circuit current that can reduce reactance coil 2 is connected.
Among the 4th embodiment, reduce pulse 26a, 26b even several noises take place, these noises reduce pulse to be compared with power-factor improvement pulse 24a, and its pulse duration is extremely short, so the current waveform of supply unit is almost constant, to power factor also not influence.
Fig. 6 represents each signal waveform of the present invention's the 5th embodiment supply unit.Among the 5th embodiment, when several power-factor improvement pulses 24a, 24b took place continuously, after each power-factor improvement pulse, noise took place and reduces pulse 26a, 26b in each.Among Fig. 6, expression power-factor improvement pulse 24a, 24b and noise reduce pulse 26a, the situation when 26b is respectively 2.
Continuous power-factor improvement pulse 24a, 24b take place in, and then after each power-factor improvement pulse 24a, 24b, a noise takes place reduce pulse 26a, 26b, like this, when improving the power factor of supply unit, the noise the when short circuit current that can reduce reactance coil 2 conscientiously cuts off.Among the 5th embodiment shown in Figure 6, be after each of several power-factor improvement pulses, to take place one to reduce noise pulse, but also can a noise take place before each of several power-factor improvement pulses and reduce pulse, like this, also can improve the power factor of supply unit, the noise the when electric current that can reduce simultaneously reactance coil 2 is connected.
Among the 5th embodiment shown in Figure 6, be to reduce pulse corresponding to noise of each power-factor improvement pulse generation, but also can reduce pulse 26b corresponding to several noises of each power-factor improvement pulse generation, in this case, noise reduces pulse can be taken place before or after the power-factor improvement pulse, also can be before the power-factor improvement pulse and all take place afterwards.Before the power-factor improvement pulse and when noise all taking place afterwards reducing pulse, the noise of the short circuit current that can reduce reactance coil 2 effectively when connecting and when cutting off.
Below, the drive signal generating mechanism 11 that power-factor improvement pulse 24a and noise reduction pulse 26a take place is described with reference to Fig. 7.The noise that causes for the vibration that reduces reactance coil 2, make the noise of reactance coil 2 short circuits reduce pulse 26a by short-circuit component 4, with by short-circuit component 4 the power-factor improvement pulse 24a of reactance coil 2 short circuits is compared in order to improve the supply unit power factor, be that current waveform is extremely lacked, do not changed basically to pulse duration, power factor do not had the pulse of the time width of influence yet.
Drive signal generating mechanism 11 for example can adopt the structure that is contained in the timing function in the microcomputer, perhaps, also can be made of the waveform generating circuit of special use.Among Fig. 7, the action when adopting counter, comparator, 4 register A, B, C, D is described.4 registers store respectively each interpulse during and the width of each pulse.Specifically, be carved into when the zero crossing of zero cross detection mechanism 10 output takes place that power-factor improvement pulse 24a takes place during, be stored in the register A as D1.On D1, add the value that the pulse duration of power-factor improvement pulse 24a obtains, be stored in the register B as D2.Adding on the D2 that power-factor improvement pulse 24a and noise reduce the value that the tempus intercalare between the pulse 26a obtains, and are stored in the register C as D3.Add that on D3 noise reduces the value that the pulse duration of pulse 26a obtains, and is stored in the register D as D4.
Zero crossing in 10 outputs of zero cross detection mechanism takes place constantly, zero crossing is interrupted, the starting counter, the value of this counter and the value of each register are compared with comparator, when the value of counter reaches the value D1 of register A stored, power-factor improvement pulse 24a takes place, when the value of counter reaches the value D2 of register B stored, stop power-factor improvement pulse 24a, when the value of counter reaches the value D3 of register C stored, noise taking place reduce pulse 26a, when the value of counter reaches the value D4 of register D stored, stops noise and reduce pulse 26a.By the value of suitable each register of setting, can simply and conscientiously reduce pulse 26a at power-factor improvement pulse 24a with required pulse width and tempus intercalare and noise.
Among Fig. 7, after power-factor improvement pulse 24a takes place noise taking place again and reduce pulse 26a, but also can noise take place before power-factor improvement pulse 24a simply reduce pulse 26a by the value of each register of change.In addition, by increasing the register number or not increasing the register number but by rewriting the value of a register successively, several power-factor improvement pulses and several noises reduction pulse also can take place, and perhaps reduce pulses corresponding to one or several noises of each power-factor improvement pulse generation.
Below, with reference to Fig. 8 to Figure 11, describe pulse duration that power-factor improvement pulse and noise reduce tempus intercalare between the pulse and noise reduction pulse in detail, be the duration of short circuit of reactance coil 2.
The noise of reactance coil 2 produces reason, is that reactance coil is with the cause of natural frequency vibration because electric current is connected sharp, when cutting off, make the reactance coil vibration.When electric current raises and reduce, produce rightabout power.So the vibration of reactance coil is continuing with the degree of T=1ms.
Noise with reference to Fig. 8 and Fig. 9 reduces umber of pulse=1 earlier, and the situation when noise reduction pulse is is described.As shown in Figure 8, if the end of a period of power-factor improvement pulse is t=0 constantly, the intermittent time of reducing between the pulse generation to noise is x, the duration of short circuit that noise reduces pulse is y, the natural frequency of reactance coil is f, angular frequency=2 π f, the vibration that then electric current is connected, reactance coil produces when cutting off is shown below.
(formula 1)
The vibration that produces during t=0 is sin (ω t)
The vibration that produces during t=x is sin (ω (t-x)-π)
The vibration that produces during t=x+y is the virtual value of the vibration of sin (ω (t-x-y)) reactance coil, between t=0～T as the institute under shown in.(formula 2)
Wherein,
(formula 3)
F(t)=sin(ωt)+sin(ω(t-x)-π)+sin(ω(t-x-y))
The minimum value of the virtual value of the vibration of reactance coil can be tried to achieve from the V eff of following formula, as long as but satisfy F (t)=0 simply.When this formula is calculated the minimum value of vibration, reduce shown in umber of pulse=1 o'clock as the noise of Fig. 9, power-factor improvement pulse and noise reduce intermittent time x between the pulse and the duration of short circuit y of noise reduction pulse is respectively
x=y=π/(3ω)。
In the above description, the situation that intermittent time is equated with duration of short circuit is described, because the vibration of reactance coil is a periodic function, so, 2a π/ω (a=0,1,2,3 even intermittent time and duration of short circuit phase place separately staggers ...) and 2b π/ω (b=0,1,2,3 ...), also can realize same effect, intermittent time x and duration of short circuit y are shown below respectively and get final product.
x=±π/(3ω)+2aπ/ω
y=±π/(3ω)+2bπ/ω
At this moment, x＞0, y＞0, a, b can be different values.But, when the 1st symbol in the formula of intermittent time x be+time, in the formula of duration of short circuit y the 1st symbol be+, otherwise, when the 1st symbol in the formula of intermittent time x be-time, in the formula of duration of short circuit y the 1st symbol for also be-.
Situation when above noise reduction pulse being one is described.The following describes noise reduction pulse is n (n=1,2,3 ...) time situation.Virtual value F (t) expression general expression according to above-mentioned reactance coil vibration carries out noise as illustrated in fig. 10 and reduces pulse generation demonstration constantly.That is,, establish i noise and reduce pulse and rise and descend and be respectively α i, β i constantly constantly as benchmark (t=0) constantly with the end of a period of power-factor improvement pulse, then the virtual value that vibrates of the reactance coil between 0～T is shown below.
(formula 4)
Wherein, (formula 5) G (t)=sin (ω t)
The minimum value G (t)=0 of the virtual value of reactance coil vibration gets final product, and the relation that satisfies α i, the β i of this G (t)=0 has a lot, and as an example, as shown in Figure 9, intermittent time x and duration of short circuit y equate, when noise reduces umber of pulse n=2, are shown below.
xi=yi=π/5(ω)
Similarly, the noise reduction pulse that equates is n (n=1,2,3 ...) when individual, be shown below.
xi=yi=π/((2n+1)ω)
Consider from the character of periodic function, as phase shifting 2a π/ω (a=0,1,2,3 ...) time, be shown below.
(formula 6)
xi=yi=π/((2n+1)ω)+2aπ/ω
As another example, when n=2, can imagine easily that also noise shown in Figure 11 reduces pulse, they are also contained in the relation that satisfies above-mentioned G (t)=0.In addition, other the condition that satisfies G (t)=0 also exists, and its explanation is omitted.
As mentioned above, by reduce the intermittent time x and the duration of short circuit y of pulse according to the natural frequency decision noise of reactance coil, can reduce the noise of reactance coil most effectively.This determining method does not change felicity condition because of the state of supply frequency, load etc.After having determined used reactance coil, the decision natural frequency can determine optimal noise to reduce pulse.
Below, with reference to Figure 12 explanation with respect to postponing turn-on time of the delay of short-circuit component driving mechanism 12, short-circuit component 4 and postpone break time, the method that the intermittent time and the duration of short circuit of above-mentioned decision are revised.Be illustrated among Figure 12 in short-circuit component driving mechanism 12 and the short-circuit component 4, suppose that break time is than the situation of revising soon turn-on time.
In order to make noise become the on/off timing of the electric current of minimum value ground decision short-circuit component 4, the output signal of drive signal generating mechanism 11 is set the intermittent time shortly, the time of delay that only is equivalent to short-circuit component driving mechanism 12 and short-circuit component 4, noise is reduced the duration of short circuit of pulse and set longly.Like this, can regularly make short-circuit component 4 actions with the above-mentioned on/off that calculates.In addition, in Figure 12, the current waveform of short-circuit component 4 is expressed as square wave simply.In Figure 12, noise takes place after having exported the power-factor improvement pulse again reduce pulse, still,, noise reduces pulse before output power factor improves pulse if taking place, by carrying out same correction, also can reduce the noise of reactance coil.In addition, when noise reduction pulse has several,, also can prevent the noise of reactance coil by carrying out same correction.
Below with reference to Figure 13, the situation when supply unit of the present invention is used for conditioner is described.Among Figure 13, AC power 1, reactance coil the 2, the 1st diode bridge 3, short-circuit component the 4, the 2nd diode bridge 5, smoothly use identical in electrochemical capacitor 6,7,8, zero cross detection mechanism 10, short-circuit component driving mechanism 12 and the supply unit shown in Figure 1.The 15th, microcomputer, the 16th, phase inverter, the 17th, compressor motor.
Figure 14 is the noise properties curve chart, is adorning in the expression to have conditioner and interior dress that power-factor improvement function and noise reduce the supply unit of the present invention of function and have only the power-factor improvement function and do not have noise to reduce the noise properties of conditioner of the existing power supply device of function.Among the figure, adorn the noise properties of the conditioner of existing power supply device in curve Y represents, adorning the noise properties of the conditioner of supply unit of the present invention in curve H represents.As seen from the figure, the noise in 7KHz to the 8KHz interval among the curve Y is very big, and the noise in 7KHz to the 8KHz interval among the curve H has lowered a lot.
Claims (14)
1. supply unit, having becomes the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism to the ac voltage rectifier from AC power, it is characterized in that also having:
The load-side of above-mentioned reactance coil, can be by above-mentioned reactance coil with the switching circuit of power supply short circuit;
The short circuit controlling organization with the short circuit control signal of the short circuit of control said switching circuit, non-short circuit action, is supplied with said switching circuit,
Above-mentioned short circuit controlling organization is supplied with said switching circuit with the 1st short circuit control signal and the 2nd short circuit control signal, described the 1st short circuit control signal is to have passed through between the predetermined short-term after the zero point at alternating voltage, the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 2nd short circuit control signal be by above-mentioned the 1st short circuit control signal with power supply short circuit after, with than during shorter between above-mentioned predetermined short-term, the control said switching circuit is by above-mentioned reactance coil with power supply short circuit.
2. supply unit as claimed in claim 1 is characterized in that, above-mentioned short circuit controlling organization with respect to the once output of above-mentioned the 1st short circuit control signal, and carries out one or many output with the 2nd short circuit control signal.
3. supply unit as claimed in claim 1 is characterized in that, above-mentioned short circuit controlling organization with respect to the repeatedly output of above-mentioned the 1st short circuit control signal, and carries out one or many output with the 2nd short circuit control signal.
4. supply unit as claimed in claim 1 is characterized in that, above-mentioned short circuit controlling organization with respect to the output each time of the output of the several times of above-mentioned the 1st short circuit control signal, carries out above-mentioned the 2nd short circuit control signal once or several times output.
5. supply unit, having the AC voltage conversion from AC power is the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism, it is characterized in that also having:
The load-side of above-mentioned reactance coil, can be by above-mentioned reactance coil with the switching circuit of power supply short circuit;
The short circuit controlling organization with the short circuit control signal of the short circuit of control said switching circuit, non-short circuit action, is supplied with said switching circuit,
Above-mentioned short circuit controlling organization is supplied with said switching circuit with the 1st short circuit control signal, the 2nd short circuit control signal and the 3rd short circuit control signal, described the 1st short circuit control signal is to have passed through between the predetermined short-term after the zero point at alternating voltage, the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 2nd short circuit control signal is after by above-mentioned the 1st short circuit control signal power supply short circuit, with than during shorter between above-mentioned predetermined short-term, and the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 3rd short circuit control signal is after above-mentioned the 1st short circuit control signal is with power supply short circuit, with than during shorter between above-mentioned predetermined short-term, and the control said switching circuit, by above-mentioned reactance coil with power supply short circuit.
6. supply unit as claimed in claim 5, it is characterized in that, between by the above-mentioned short-term of the above-mentioned the 2nd or the 3rd short circuit control signal with power supply short circuit, and during the non-short circuit between the short circuit action of the short circuit action of the said switching circuit that produces by above-mentioned the 1st short circuit control signal and the said switching circuit that produces by the above-mentioned the 2nd or the 3rd short circuit control signal, be the value of setting for according to the natural frequency decision of above-mentioned reactance coil.
7. as each described supply unit in the claim 1～6, it is characterized in that, above-mentioned short circuit controlling organization has drive signal generating mechanism and driving mechanism, above-mentioned drive signal generating mechanism generation drive signal, this drive signal have by the pulse duration during each short circuit that is equivalent to the generation of the 1st, the 2nd and the 3rd short circuit control signal; Above-mentioned driving mechanism is accepted the drive signal from this drive signal generating mechanism, according to the above-mentioned switching mechanism of this drive.
8. supply unit as claimed in claim 7, it is characterized in that, between described short-term, and during the non-short circuit between the short circuit action of the said switching circuit that the short circuit action of the said switching circuit that is produced by above-mentioned the 1st short circuit control signal and the above-mentioned the 2nd or the 3rd short circuit control signal produce by the above-mentioned the 2nd or the 3rd short circuit control signal short circuit power supply, the value that is set at time of delay of having considered said switching circuit and above-mentioned driving mechanism and determines according to the natural frequency of above-mentioned reactance coil.
9. supply unit as claimed in claim 1 is characterized in that, the translation circuit of using motor for the compressor that drives conditioner is supplied with in the output of above-mentioned supply unit.
10. supply unit, having becomes the rectification mechanism of direct voltage and the reactance coil that is connected in series with this rectification mechanism to the ac voltage rectifier from AC power; It is characterized in that also having:
The load-side of above-mentioned reactance coil, can be by above-mentioned reactance coil with the switching circuit of power supply short circuit;
The short circuit controlling organization with the short circuit control signal of the short circuit of control said switching circuit, non-short circuit action, is supplied with said switching circuit,
Above-mentioned short circuit controlling organization is exported the 1st short circuit control signal and the 2nd short circuit control signal, and described the 1st short circuit control signal is to have passed through between the predetermined short-term after the zero point at alternating voltage, the control said switching circuit, by above-mentioned reactance coil with power supply short circuit; Described the 2nd short circuit control signal is before above-mentioned the 1st short circuit control signal is with power supply short circuit, with than during shorter between above-mentioned predetermined short-term, and the control said switching circuit, by above-mentioned reactance coil with power supply short circuit.
11. supply unit as claimed in claim 10 is characterized in that, above-mentioned short circuit controlling organization with respect to the once output of above-mentioned the 1st short circuit control signal, is exported above-mentioned the 2nd short circuit control signal once or several times.
12. supply unit as claimed in claim 10 is characterized in that, above-mentioned short circuit controlling organization with respect to the several times output of above-mentioned the 1st short circuit control signal, is exported above-mentioned the 2nd short circuit control signal once or several times.
13. supply unit as claimed in claim 10 is characterized in that, above-mentioned short circuit controlling organization with respect to the signal each time that the several times of above-mentioned the 1st short circuit control signal are exported, is exported above-mentioned the 2nd short circuit control signal once or several times.
14. supply unit as claimed in claim 10 is characterized in that, the translation circuit of using motor for the compressor that drives conditioner is supplied with in the output of above-mentioned supply unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP230958/96 | 1996-08-30 | ||
| JP230958/1996 | 1996-08-30 | ||
| JP23095896A JP3578874B2 (en) | 1996-08-30 | 1996-08-30 | Power supply and power supply for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1175813A CN1175813A (en) | 1998-03-11 |
| CN1067500C true CN1067500C (en) | 2001-06-20 |
Family
ID=16915996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97115283A Expired - Fee Related CN1067500C (en) | 1996-08-30 | 1997-08-29 | Power supply unit |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3578874B2 (en) |
| KR (1) | KR100266034B1 (en) |
| CN (1) | CN1067500C (en) |
| GB (1) | GB2316817B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2335550B (en) * | 1997-06-27 | 1999-12-22 | Toshiba Kk | Direct-current power supply system and air conditioner using such power supply system |
| JP3550485B2 (en) * | 1997-06-27 | 2004-08-04 | 東芝キヤリア株式会社 | DC power supply and air conditioner |
| TW364049B (en) | 1997-09-24 | 1999-07-11 | Toshiba Corp | Power conversion apparatus and air conditioner using the same |
| KR100321244B1 (en) * | 1998-12-30 | 2002-03-08 | 윤종용 | Harmonic Suppression Device of Air Conditioner and Its Suppression Method |
| US6281658B1 (en) | 1999-01-08 | 2001-08-28 | Lg Electronics Inc. | Power factor compensation device for motor driving inverter system |
| KR100420964B1 (en) * | 2002-02-23 | 2004-03-02 | 학교법인 포항공과대학교 | Single-stage converter compensating power factor |
| KR100757484B1 (en) * | 2002-03-08 | 2007-09-11 | 주식회사 엘지이아이 | A power factor correction circuit and method of inverter air conditioner |
| KR100614330B1 (en) * | 2004-02-24 | 2006-08-18 | 엘지전자 주식회사 | Method for power factor compensation of inverter control circuit |
| CN101080864B (en) * | 2004-12-15 | 2010-06-23 | 富士通将军股份有限公司 | Power supply device |
| JP4705950B2 (en) * | 2007-12-27 | 2011-06-22 | 東芝キヤリア株式会社 | DC power supply |
| JP5481165B2 (en) * | 2009-11-06 | 2014-04-23 | 日立アプライアンス株式会社 | DC power supply device and air conditioner using the same |
| CN102095922B (en) * | 2010-11-28 | 2012-12-12 | 沈阳工业大学 | Short circuit current zero predicting method |
| WO2016051488A1 (en) * | 2014-09-30 | 2016-04-07 | 三菱電機株式会社 | Power conversion device |
| JP2018174643A (en) * | 2017-03-31 | 2018-11-08 | 三菱重工サーマルシステムズ株式会社 | Converter device, method for controlling the same, and motor drive device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02299470A (en) * | 1989-05-11 | 1990-12-11 | Fuji Electric Co Ltd | High power-factor rectifier circuit |
| JPH077946A (en) * | 1992-08-06 | 1995-01-10 | Mitsubishi Electric Corp | Dc power-supply apparatus |
| US5440473A (en) * | 1993-09-17 | 1995-08-08 | Toko, Inc. | AC-DC converter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61224857A (en) * | 1985-03-29 | 1986-10-06 | Hitachi Ltd | Controller of rectifier circuit |
| WO1993026078A1 (en) * | 1992-06-10 | 1993-12-23 | Digital Equipment Corporation | High power factor switched dc power supply |
| EP0695024B1 (en) * | 1994-07-01 | 2003-02-26 | Sharp Kabushiki Kaisha | Air conditioning device |
-
1996
- 1996-08-30 JP JP23095896A patent/JP3578874B2/en not_active Expired - Fee Related
-
1997
- 1997-08-18 KR KR1019970039765A patent/KR100266034B1/en not_active IP Right Cessation
- 1997-08-29 GB GB9718368A patent/GB2316817B/en not_active Expired - Fee Related
- 1997-08-29 CN CN97115283A patent/CN1067500C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02299470A (en) * | 1989-05-11 | 1990-12-11 | Fuji Electric Co Ltd | High power-factor rectifier circuit |
| JPH077946A (en) * | 1992-08-06 | 1995-01-10 | Mitsubishi Electric Corp | Dc power-supply apparatus |
| US5440473A (en) * | 1993-09-17 | 1995-08-08 | Toko, Inc. | AC-DC converter |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2316817B (en) | 1998-09-23 |
| GB2316817A (en) | 1998-03-04 |
| JP3578874B2 (en) | 2004-10-20 |
| KR19980018826A (en) | 1998-06-05 |
| GB9718368D0 (en) | 1997-11-05 |
| CN1175813A (en) | 1998-03-11 |
| KR100266034B1 (en) | 2000-09-15 |
| JPH1080139A (en) | 1998-03-24 |
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