CN103683895A - Bridgeless type power factor corrector with single inductance element and operating method of bridgeless type power factor corrector - Google Patents
Bridgeless type power factor corrector with single inductance element and operating method of bridgeless type power factor corrector Download PDFInfo
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- CN103683895A CN103683895A CN201210333014.6A CN201210333014A CN103683895A CN 103683895 A CN103683895 A CN 103683895A CN 201210333014 A CN201210333014 A CN 201210333014A CN 103683895 A CN103683895 A CN 103683895A
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a bridgeless type power factor corrector with a single inductance element and an operating method of the bridgeless type power factor corrector. The bridgeless type power factor corrector is electrically connected with an AC power source. The bridgeless type power factor corrector comprises the inductance element, a first switch, a second switch, a first diode, a second diode, a capacitor, a first rectifier diode and a second rectifier diode, wherein the inductance element is electrically connected between the first switch and the second switch. When the AC power source is in a positive half cycle or a negative half cycle, the first switch and the second switch are respectively controlled to be powered on or powered off by a first control signal and a second control signal, so as to correct the power factor of the AC power source. In addition, the invention further provides an operating method of the bridgeless type power factor corrector.
Description
Technical field
The present invention relates to a kind of no bridge type power factor adjuster and method of operation thereof, relate in particular to a kind of no bridge type power factor adjuster and method of operation thereof with single inductance element.
Background technology
Power factor correction (power factor correction, PFC) circuit is a kind of power-switching circuit being widely used at present in electronic installation, and it can improve AC power, makes voltage and electric current can become synchronous state as far as possible.Power factor correction (PFC) can represent the utilization ratio of electronic product to electric energy: power factor is higher, illustrates that the utilization ratio of electric energy is higher, and vice versa.Therefore, in electronic product, conventionally import power factor corrector, so can improve widely the utilization ratio to electric energy.
Referring to Fig. 1, is the circuit diagram of prior art full-bridge type power factor corrector.Because boost power factor adjuster (boost PFC) can be reached high merit because of the effect with low harmonic wave with single-level circuit, therefore the most often as power factor correction function, use.This boost power factor adjuster is comprised of a bridge rectifier 12A, an inductance 13A, a switch 14A, a diode 15A, a resistance 16A and an electric capacity 17A.This boost power factor adjuster is electrically connected an external ac power source 10A, and conventionally utilize a power factor correction controller (not shown), obtain input current and the input voltage of this external ac power source 10A, to control this switch 14A, and utilize high frequency to switch this switch 14A, make the phase place of input current follow input voltage, and reach the object of High Power Factor.In addition, between this external ac power source 10A and this boost power factor adjuster, also can be electrically connected an Electromagnetic interference filter 11A, to eliminate the noise of this external ac power source 10A.
In traditional boost power factor adjuster, the power consumption that the bridge diode of this bridge rectifier 12A (bridge diode) produces accounts for whole conversion loss higher proportion conventionally, therefore causes reducing conversion efficiency.
Referring to Fig. 2, is the circuit diagram of prior art no bridge type power factor adjuster.The circuit diagram of this no bridge type power factor adjuster comprises one first inductance 231A, one second inductance 232A, one first switch 241A, a second switch 242A, one first diode 251A, one second diode 252A, a resistance 26A, an electric capacity 27A, one first rectifier diode 281A, one second rectifier diode 282A, one first bypass diode 29_1A and one second bypass diode 29_2A.This no bridge type power factor adjuster is electrically connected an external ac power source 20A, and conventionally utilize a power factor correction controller (not shown), obtain input current and the input voltage of this external ac power source 20A, to control this first switch 241A and this second switch 242A, and utilize high frequency to switch this first switch 241A and this second switch 242A, make the phase place of input current follow input voltage, and reach the object of High Power Factor.In addition, between this external ac power source 20A and this no bridge type power factor adjuster, also can be electrically connected an Electromagnetic interference filter 21A, to eliminate the noise of this external ac power source 20A.
Because traditional no bridge type power factor adjuster adopts two inductance elements (that is this first inductance 231A and this second inductance 232A) as the use of power conversion when external ac power source 20A is positive and negative half cycle (energy storage and release energy), and an inductance is responsible for the operation of positive half cycle, another inductance is responsible for the operation of negative half period, that is, no matter during in positive half cycle or negative half period power supply, wherein an inductance, for idle (idle) situation, so will make the utilance of inductance element low.Moreover, due to characteristic (unshakable in one's determination, the coiling of inductance (choke) itself ... Deng), common shared space requirement is larger.
Therefore, how to design a kind of no bridge type power factor adjuster and method of operation thereof with single inductance element, utilize single inductance element that energy storage and the operation of releasing energy are provided, so that the power factor correction of input power to be provided, and reach and reduce loss and improve conversion efficiency, save the shared volumetric spaces of inductance element, and the effect that improves inductance element utilance is a large problem that overcomes and solve for institute of the present invention wish row.
Prior art
10A external ac power source
11A Electromagnetic interference filter
12A bridge rectifier
13A inductance
14A switch
15A diode
16A resistance
17A electric capacity
20A external ac power source
21A Electromagnetic interference filter
23_1A the first inductance
23_2A the second inductance
24_1A the first switch
24_2A second switch
25_1A the first diode
25_2A the second diode
26A resistance
27A electric capacity
28_1A the first rectifier diode
28_2A the second rectifier diode
29_1A the first bypass diode
29_2A the second bypass diode
The present invention
Vac AC power
Lp inductance element
Sw1 the first switch
Sw2 second switch
Dp1 the first diode
Dp2 the second diode
Cp electric capacity
Dr1 the first rectifier diode
Dr2 the second rectifier diode
Db1 the first bypass diode
Db2 the second bypass diode
F_emi Electromagnetic interference filter
Vac_1 AC power first end
Vac_2 AC power the second end
Lp_1 inductance element first end
Lp_2 inductance element the second end
Sw1_1 the first switch first end
Sw1_2 first switch the second end
Sw2_1 second switch first end
Sw2_2 second switch the second end
Dp1_1 the first diode anode
Dp1_2 the first diode cathode
Dp2_1 the second diode anode
Dp2_2 the second diode cathode
Cp_1 electric capacity first end
Cp_2 electric capacity the second end
Dr1_1 the first rectifier diode first end
Dr1_2 first rectifier diode the second end
Dr2_1 the second rectifier diode first end
Dr2_2 second rectifier diode the second end
Db1_1 the first bypass diode first end
Db1_2 first bypass diode the second end
Db2_1 the second bypass diode first end
Db2_2 second bypass diode the second end
The positive half cycle tank circuit of Lpe_s
The positive half cycle of Lpe_r is released can loop
Lne_s negative half period tank circuit
Lne_r negative half period is released can loop
Uc control unit
Sc1 the first control signal
Sc2 the second control signal
S10～S60 step
Summary of the invention
An object of the present invention is to provide a kind of no bridge type power factor adjuster with single inductance element, to overcome the problem of prior art.
This no bridge type power factor adjuster with single inductance element is electrically connected at an AC power.This no bridge type power factor adjuster comprises an inductance element, one first switch, a second switch, one first diode, one second diode, an electric capacity, one first rectifier diode and one second rectifier diode.This inductance element has a first end and one second end.This first switch has a first end and one second end, and this first end connects a first end of this AC power, and this second end connects this first end of this inductance element.This second switch has a first end and one second end, and this first end connects one second end of this AC power, and this second end connects this second end of this inductance element.This first diode has an anode and a negative electrode, this first end of this this inductance element of anodic bonding.This second diode has an anode and a negative electrode, this second end of this this inductance element of anodic bonding, and this negative electrode connects this negative electrode of this first diode.This electric capacity has a first end and one second end, and this first end connects this negative electrode of this first diode, and this second end connects an earth point.This first rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, and this negative electrode connects this first end of this first switch.This second rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, and this negative electrode connects this first end of this second switch.Wherein, when this AC power is positive half cycle or negative half period, it is conducting or cut-off that this first switch and this second switch are controlled by one first control signal and one second control signal respectively, to provide power factor correction to this AC power.
Another object of the present invention is to provide a kind of method of operation with the no bridge type power factor adjuster of single inductance element, to overcome the problem of prior art.
This no bridge type power factor adjuster is electrically connected at an AC power.The step of this mode of operation comprises (a) provides an inductance element, has a first end and one second end; (b) provide one first switch and a second switch, this first switch has a first end and one second end, this first end connects a first end of this AC power, this second end connects this first end of this inductance element, this second switch has a first end and one second end, this first end connects one second end of this AC power, and this second end connects this second end of this inductance element; (c) provide one first diode and one second diode, this first diode has an anode and a negative electrode, this first end of this this inductance element of anodic bonding, this second diode has an anode and a negative electrode, this second end of this this inductance element of anodic bonding, this negative electrode connects this negative electrode of this first diode; (d) provide an electric capacity, have a first end and one second end, this first end connects this negative electrode of this first diode, and this second end connects an earth point; (e) provide one first rectifier diode and one second rectifier diode, this first rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, this negative electrode connects this first end of this first switch, this second rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, this negative electrode connects this first end of this second switch; (f), when this AC power is positive half cycle or negative half period, it is conducting or cut-off that this first switch and this second switch are controlled by one first control signal and one second control signal respectively, to provide power factor correction to this AC power.
Below in conjunction with the drawings and specific embodiments, describe the present invention, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of prior art full-bridge type power factor corrector;
Fig. 2 is the circuit diagram of prior art no bridge type power factor adjuster;
Fig. 3 is the circuit diagram of the no bridge type power factor adjuster of the single inductance element of tool of the present invention;
Fig. 4 A is that to operate in AC power be positive half cycle and the inductance element circuit diagram while being stored energy operation to this no bridge type power factor adjuster of the present invention;
Fig. 4 B is that to operate in AC power be that positive half cycle and inductance element are the circuit diagram of releasing in the time of operating to this no bridge type power factor adjuster of the present invention;
Fig. 5 A is that to operate in AC power be negative half period and the inductance element circuit diagram while being stored energy operation to this no bridge type power factor adjuster of the present invention;
Fig. 5 B is that to operate in AC power be that negative half period and inductance element are the circuit diagram of releasing in the time of operating to this no bridge type power factor adjuster of the present invention; And
Fig. 6 is the flow chart of this no bridge type power factor adjuster method of operation of the present invention.
Wherein, Reference numeral
Embodiment
Hereby, about the technical content and a detailed description, coordinate accompanying drawing to be described as follows:
Refer to Fig. 3, for the present invention has the circuit diagram of the no bridge type power factor adjuster of single inductance element.This no bridge type power factor adjuster is electrically connected at an AC power Vac.This no bridge type power factor adjuster comprises an inductance component L p, one first switch S w1, a second switch Sw2, one first diode Dp1, one second diode Dp2, a capacitor C p, one first rectifier diode Dr1 and one second rectifier diode Dr2.In addition, be electrically connected an Electromagnetic interference filter (EMI filter) F_emi between this no bridge type power factor adjuster and this AC power Vac, this Electromagnetic interference filter F_emi receives this AC power Vac, to eliminate the noise of this AC power Vac.As shown in Figure 3, this inductance component L p has a first end Lp_1 and one second end Lp_2.This first switch has a first end Sw1_1 and one second end Sw1_2, and this first end Sw1_1 connects a first end Vac_1 of this AC power Vac, and this second end Sw1_2 connects this first end Lp_1 of this inductance component L p.This second switch Sw2 has a first end Sw2_1 and one second end Sw2_2, and this first end Sw2_1 connects the one second end Vac_2 of this AC power Vac, and this second end Sw2_2 connects this second end Lp_2 of this inductance component L p.Wherein, this first switch S w1 and this second switch Sw2 are a metal oxide semiconductcor field effect transistor (MOSFET), a two-carrier junction transistor (BJT) or an igbt (IGBT), but not as limit.This first diode Dp1 has an anode Dp1_1 and a negative electrode Dp1_2, and this anode Dp1_1 connects this first end Lp_1 of this inductance component L p.This second diode Dp2 has an anode Dp2_1 and a negative electrode Dp2_2, and this anode Dp2_1 connects this second end Lp_2 of this inductance component L p, and this negative electrode Dp2_2 connects this negative electrode Dp1_2 of this first diode Dp1.This capacitor C p has a first end Cp_1 and one second end Cp_2, and this first end Cp_1 connects this negative electrode Dp1_2 of this first diode Dp_1, and this second end Cp_2 connects an earth point (not indicating).This first rectifier diode Dr1 has an anode Dr1_1 and a negative electrode Dr1_2, and this anode Dr1_1 connects this second end Cp_2 of this capacitor C p, and this negative electrode Dr1_2 connects this first end Sw1_1 of this first switch S w1.This second rectifier diode Dr2 has an anode Dr2_1 and a negative electrode Dr2_2, and this anode Dr2_1 connects this second end Cp_2 of this capacitor C p, and this negative electrode Dr2_2 connects this first end Sw2_1 of this second switch Sw2.Wherein, when this AC power Vac is positive half cycle or negative half period, it is conducting or cut-off that this first switch S w1 and this second switch Sw2 are controlled by one first control signal Sc1 and one second control signal Sc2 respectively, to provide power factor correction to this AC power Vac.Be worth mentioning, this no bridge type power factor adjuster also comprises one first bypass diode Db1 and one second bypass diode Db2.This first bypass diode Db1 has an anode Db1_1 and a negative electrode Db1_2; this anode Db1_1 connects this first end Sw1_1 of this first switch S w1; this negative electrode Db1_2 connects this first end Cp_1 of this capacitor C p, so that the overvoltage protection of this first switch S w1, this first diode Dp1, this first rectifier diode Dr1 and this inductance component L p to be provided.This second bypass diode Db2 has an anode Db2_1 and a negative electrode Db2_2; this anode Db2_1 connects this first end Sw2_1 of this second switch Sw2; this negative electrode Db2_2 connects this first end Cp_1 of this capacitor C p, so that the overvoltage protection of this second switch Sw2, this second diode Dp2, this second rectifier diode Dr2 and this inductance component L p to be provided.
Operation as for this no bridge type power factor adjuster when this AC power Vac is positive half cycle or negative half period, will coordinate accompanying drawing to be described in detail below.
Referring to Fig. 4 A, is positive half cycle and the inductance element circuit diagram while being stored energy operation for this no bridge type power factor adjuster of the present invention operates in AC power.Be worth mentioning, this no bridge type power factor adjuster also comprises a control unit Uc, to produce this first control signal Sc1 and this second control signal Sc2, control respectively this first switch S w1 and this second switch Sw2, and then provide power factor correction to this AC power Vac.When this AC power Vac is positive half cycle, and when this inductance component L p is stored energy operation (energy-storing operation), this control unit Uc switches this first switch S w1 and this second switch Sw2, makes this AC power Vac pass through a positive half cycle tank circuit Lpes to this inductance component L p energy storage.Wherein, this positive half cycle tank circuit Lpes sequentially by this AC power Vac, this first switch S w1, this inductance component L p, this second switch Sw2, return this AC power Vac and formed.
Referring to Fig. 4 B, is that positive half cycle and inductance element are the circuit diagram of releasing can operate time for this no bridge type power factor adjuster of the present invention operates in AC power.When this AC power Vac is positive half cycle, and when this inductance component L p can operate (energy-releasing operation) for releasing, this control unit Uc switches this first switch S w1 and this second switch of cut-off (turned off) Sw2, makes this inductance component L p be released and can stored energy be provided to rear end and be exported loop Lper by a positive half cycle.Wherein, this positive half cycle release can loop Lper sequentially by this inductance component L p, this second diode Dp2, this capacitor C p, this second rectifier diode Dr2, this AC power Vac, this first switch S w1, return this inductance component L p and formed.
Referring to Fig. 5 A, is negative half period and the inductance element circuit diagram while being stored energy operation for this no bridge type power factor adjuster of the present invention operates in AC power.When this AC power Vac is negative half period, and when this inductance component L p is stored energy operation (energy-storing operation), this control unit Uc switches this first switch S w1 and this second switch Sw2, makes this AC power Vac pass through a negative half period tank circuit Lnes to this inductance component L p energy storage.Wherein, this negative half period tank circuit Lnes sequentially by this AC power Vac, this second switch Sw2, this inductance component L p, this first switch S w1, return this AC power Vac and formed.
Referring to Fig. 5 B, is that negative half period and inductance element are the circuit diagram of releasing can operate time for this no bridge type power factor adjuster of the present invention operates in AC power.When this AC power Vac is negative half period, and when this inductance component L p can operate (energy-releasing operation) for releasing, this control unit Uc switches this second switch Sw2 and this first switch S of cut-off (turned off) w1, makes this inductance component L p be released and can stored energy be provided to rear end and be exported loop Lner by a negative half period.Wherein, this negative half period release can loop Lner sequentially by this inductance component L p, this first diode Dp1, this capacitor C p, this first rectifier diode Dr1, this AC power Vac, this second switch Sw2, return this inductance component L p and formed.
Referring to Fig. 6, is the flow chart of this no bridge type power factor adjuster method of operation of the present invention.This no bridge type power factor adjuster is electrically connected at an AC power.Wherein, be electrically connected an Electromagnetic interference filter (EMI filter) between this no bridge type power factor adjuster and this AC power, this Electromagnetic interference filter receives this AC power, to eliminate the noise of this AC power.The step of this mode of operation comprises provides an inductance element (S10), this inductance element to have a first end and one second end.One first switch and a second switch (S20) are provided, this first switch has a first end and one second end, this first end connects a first end of this AC power, this second end connects this first end of this inductance element, this second switch has a first end and one second end, this first end connects one second end of this AC power, and this second end connects this second end of this inductance element.Wherein, this first switch and this second switch are a metal oxide semiconductcor field effect transistor (MOSFET), a two-carrier junction transistor (BJT) or an igbt (IGBT), but not as limit.One first diode and one second diode (S30) are provided, this first diode has an anode and a negative electrode, this first end of this this inductance element of anodic bonding, this second diode has an anode and a negative electrode, this second end of this this inductance element of anodic bonding, this negative electrode connects this negative electrode of this first diode.One electric capacity (S40) is provided, and this electric capacity has a first end and one second end, and this first end connects this negative electrode of this first diode, and this second end connects an earth point.One first rectifier diode and one second rectifier diode (S50) are provided, this first rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, this negative electrode connects this first end of this first switch, this second rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, this negative electrode connects this first end of this second switch.When this AC power is positive half cycle or negative half period, it is conducting or cut-off that this first switch and this second switch are controlled by one first control signal and one second control signal respectively, this AC power is provided to power factor correction (S60).Wherein, this first control signal and this second control signal produce by a control unit.Be worth mentioning, the step of this mode of operation also comprises provides one first bypass diode and one second bypass diode.This first bypass diode has an anode and a negative electrode; this first end of this first switch of this anodic bonding; this negative electrode connects this first end of this electric capacity, so that the overvoltage protection of this first switch, this first diode, this first rectifier diode and this inductance element to be provided.This second bypass diode has an anode and a negative electrode; this first end of this this second switch of anodic bonding; this negative electrode connects this first end of this electric capacity, so that the overvoltage protection of this second switch, this second diode, this second rectifier diode and this inductance element to be provided.
As for this operation of no bridge type power factor adjuster when this AC power is positive half cycle or negative half period, will be described in detail later.
When this AC power is positive half cycle, and when this inductance element is stored energy operation (energy-storing operation), this control unit switches this first switch and this second switch, makes this AC power pass through a positive half cycle tank circuit to this inductance element energy storage.Wherein, this positive half cycle tank circuit sequentially by this AC power, this first switch, this inductance element, this second switch, return this AC power and formed.When this AC power is positive half cycle, and when this inductance element can operate (energy-releasing operation) for releasing, this control unit switches this first switch and this second switch of cut-off (turned off), makes this inductance element be released and can stored energy be provided to rear end and be exported loop by a positive half cycle.Wherein, this positive half cycle release can loop sequentially by this inductance element, this second diode, this electric capacity, this second rectifier diode, this AC power, this first switch, return this inductance element and formed.When this AC power is negative half period, and when this inductance element is stored energy operation (energy-storing operation), this control unit switches this first switch and this second switch, makes this AC power pass through a negative half period tank circuit to this inductance element energy storage.Wherein, this negative half period tank circuit sequentially by this AC power, this second switch, this inductance element, this first switch, return this AC power and formed.When this AC power is negative half period, and when this inductance element can operate (energy-releasing operation) for releasing, this control unit switches this second switch and this first switch of cut-off (turned odd), makes this inductance element be released and can stored energy be provided to rear end and be exported loop by a negative half period.Wherein, this negative half period release can loop be sequentially by this inductance element, this first diode, this electric capacity, this first rectifier diode, this AC power, this second switch, return this inductance element and formed.
In sum, the present invention has following feature & benefits:
1, utilize no bridge type circuit framework, can use bridge diode, therefore reduce widely loss, and then improve conversion efficiency;
2, utilize single this inductance component L p, save shared volumetric spaces; And
3, utilize single this inductance component L p, the use of power conversion while being positive and negative half cycle as this AC power Vac, to improve the utilance of this inductance component L p.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (18)
1. a no bridge type power factor adjuster with single inductance element, is electrically connected at an AC power, it is characterized in that, this no bridge type power factor adjuster comprises:
One inductance element, has a first end and one second end;
One first switch, has a first end and one second end, and this first end connects a first end of this AC power, and this second end connects this first end of this inductance element;
One second switch, has a first end and one second end, and this first end connects one second end of this AC power, and this second end connects this second end of this inductance element;
One first diode, has an anode and a negative electrode, this first end of this this inductance element of anodic bonding;
One second diode, has an anode and a negative electrode, this second end of this this inductance element of anodic bonding, and this negative electrode connects this negative electrode of this first diode;
One electric capacity, has a first end and one second end, and this first end connects this negative electrode of this first diode, and this second end connects an earth point;
One first rectifier diode, has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, and this negative electrode connects this first end of this first switch; And
One second rectifier diode, has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, and this negative electrode connects this first end of this second switch;
Wherein, when this AC power is positive half cycle or negative half period, it is conducting or cut-off that this first switch and this second switch are controlled by one first control signal and one second control signal respectively, to provide power factor correction to this AC power.
2. no bridge type power factor adjuster according to claim 1, is characterized in that, this no bridge type power factor adjuster also comprises a control unit, to produce this first control signal and this second control signal.
3. no bridge type power factor adjuster according to claim 2, it is characterized in that, when this AC power is positive half cycle, and when this inductance element is stored energy operation, this control unit switches this first switch and this second switch, make this AC power by a positive half cycle tank circuit to this inductance element energy storage, wherein this positive half cycle tank circuit sequentially by this AC power, this first switch, this inductance element, this second switch, return this AC power and formed.
4. no bridge type power factor adjuster according to claim 2, it is characterized in that, when this AC power is positive half cycle, and when this inductance element can operate for releasing, this control unit switches this first switch and ends this second switch, make this inductance element release and can loop stored energy be provided to rear end and exported by a positive half cycle, wherein this positive half cycle release can loop sequentially by this inductance element, this second diode, this electric capacity, this second rectifier diode, this AC power, this first switch, return this inductance element and formed.
5. no bridge type power factor adjuster according to claim 2, it is characterized in that, when this AC power is negative half period, and when this inductance element is stored energy operation, this control unit switches this first switch and this second switch, make this AC power by a negative half period tank circuit to this inductance element energy storage, wherein, this negative half period tank circuit sequentially by this AC power, this second switch, this inductance element, this first switch, return this AC power and formed.
6. no bridge type power factor adjuster according to claim 2, it is characterized in that, when this AC power is negative half period, and when this inductance element can operate for releasing, this control unit switches this second switch and ends this first switch, make this inductance element release and can stored energy be provided to rear end and be exported loop by a negative half period, wherein, this negative half period release can loop sequentially by this inductance element, this first diode, this electric capacity, this first rectifier diode, this AC power, this second switch, return this inductance element and formed.
7. no bridge type power factor adjuster according to claim 1, is characterized in that, this no bridge type power factor adjuster also comprises:
One first bypass diode, there is an anode and a negative electrode, this first end of this first switch of this anodic bonding, this negative electrode connects this first end of this electric capacity, so that the overvoltage protection of this first switch, this first diode, this first rectifier diode and this inductance element to be provided; And
One second bypass diode; there is an anode and a negative electrode; this first end of this this second switch of anodic bonding, this negative electrode connects this first end of this electric capacity, so that the overvoltage protection of this second switch, this second diode, this second rectifier diode and this inductance element to be provided.
8. no bridge type power factor adjuster according to claim 1, is characterized in that, between this no bridge type power factor adjuster and this AC power, is electrically connected an Electromagnetic interference filter, to eliminate the noise of this AC power.
9. no bridge type power factor adjuster according to claim 1, is characterized in that, this first switch and this second switch are a metal oxide semiconductcor field effect transistor, a two-carrier junction transistor or an igbt.
10. a method of operation with the no bridge type power factor adjuster of single inductance element, this no bridge type power factor adjuster is electrically connected at an AC power, it is characterized in that, and the step of this mode of operation comprises:
(a) provide an inductance element, there is a first end and one second end;
(b) provide one first switch and a second switch, this first switch has a first end and one second end, this first end connects a first end of this AC power, this second end connects this first end of this inductance element, this second switch has a first end and one second end, this first end connects one second end of this AC power, and this second end connects this second end of this inductance element;
(c) provide one first diode and one second diode, this first diode has an anode and a negative electrode, this first end of this this inductance element of anodic bonding, this second diode has an anode and a negative electrode, this second end of this this inductance element of anodic bonding, this negative electrode connects this negative electrode of this first diode;
(d) provide an electric capacity, have a first end and one second end, this first end connects this negative electrode of this first diode, and this second end connects an earth point;
(e) provide one first rectifier diode and one second rectifier diode, this first rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, this negative electrode connects this first end of this first switch, this second rectifier diode has an anode and a negative electrode, this second end of this this electric capacity of anodic bonding, this negative electrode connects this first end of this second switch; And
(f), when this AC power is positive half cycle or negative half period, it is conducting or cut-off that this first switch and this second switch are controlled by one first control signal and one second control signal respectively, to provide power factor correction to this AC power.
11. no bridge type power factor adjuster methods of operation according to claim 10, is characterized in that, in step (f), wherein this first control signal and this second control signal produce by a control unit.
12. no bridge type power factor adjuster methods of operation according to claim 11, it is characterized in that, when this AC power is positive half cycle, and when this inductance element is stored energy operation, this control unit switches this first switch and this second switch, make this AC power by a positive half cycle tank circuit to this inductance element energy storage, wherein this positive half cycle tank circuit sequentially by this AC power, this first switch, this inductance element, this second switch, return this AC power and formed.
13. no bridge type power factor adjuster methods of operation according to claim 11, it is characterized in that, when this AC power is positive half cycle, and when this inductance element can operate for releasing, this control unit switches this first switch and ends this second switch, make this inductance element release and can loop stored energy be provided to rear end and exported by a positive half cycle, wherein this positive half cycle release can loop sequentially by this inductance element, this second diode, this electric capacity, this second rectifier diode, this AC power, this first switch, return this inductance element and formed.
14. no bridge type power factor adjuster methods of operation according to claim 11, it is characterized in that, when this AC power is negative half period, and when this inductance element is stored energy operation, this control unit switches this first switch and this second switch, make this AC power by a negative half period tank circuit to this inductance element energy storage, wherein, this negative half period tank circuit sequentially by this AC power, this second switch, this inductance element, this first switch, return this AC power and formed.
15. no bridge type power factor adjuster methods of operation according to claim 11, it is characterized in that, when this AC power is negative half period, and when this inductance element can operate for releasing, this control unit switches this second switch and ends this first switch, make this inductance element release and can stored energy be provided to rear end and be exported loop by a negative half period, wherein, this negative half period is released energy loop sequentially by this inductance element, this first diode, this electric capacity, this first rectifier diode, this AC power, this second switch, returning this inductance element forms.
16. no bridge type power factor adjuster methods of operation according to claim 10, is characterized in that, the step of this mode of operation also comprises:
(g) provide one first bypass diode and one second bypass diode, this first bypass diode has an anode and a negative electrode, this first end of this first switch of this anodic bonding, this negative electrode connects this first end of this electric capacity, so that the overvoltage protection of this first switch, this first diode, this first rectifier diode and this inductance element to be provided; This second bypass diode has an anode and a negative electrode; this first end of this this second switch of anodic bonding; this negative electrode connects this first end of this electric capacity, so that the overvoltage protection of this second switch, this second diode, this second rectifier diode and this inductance element to be provided.
17. no bridge type power factor adjuster methods of operation according to claim 10, is characterized in that, are electrically connected an Electromagnetic interference filter, to eliminate the noise of this AC power between this no bridge type power factor adjuster and this AC power.
18. no bridge type power factor adjuster methods of operation according to claim 10, is characterized in that, this first switch and this second switch are a metal oxide semiconductcor field effect transistor, a two-carrier junction transistor or an igbt.
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