CN103683895B - There is no bridge type power factor corrector and the operational approach thereof of single inductance element - Google Patents
There is no bridge type power factor corrector and the operational approach thereof of single inductance element Download PDFInfo
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- CN103683895B CN103683895B CN201210333014.6A CN201210333014A CN103683895B CN 103683895 B CN103683895 B CN 103683895B CN 201210333014 A CN201210333014 A CN 201210333014A CN 103683895 B CN103683895 B CN 103683895B
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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
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- 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
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Abstract
A kind of no bridge type power factor corrector with single inductance element and operational approach thereof, the no bridge type power factor corrector with single inductance element is electrically connected at an alternating current power supply.This no bridge type power factor corrector comprises an inductance element, one first switch, a second switch, one first diode, one second diode, an electric capacity, one first commutation diode and one second commutation diode.This inductance element is electrically connected between this first switch and this second switch.Wherein, when this alternating current power supply is positive half cycle or negative half period, this first switch is controlled to be on or off by one first control signal and one second control signal with this second switch respectively, to provide PFC to this alternating current power supply.Additionally, the present invention also provides for the operational approach of a kind of no bridge type power factor corrector with single inductance element.
Description
Technical field
The present invention relates to a kind of no bridge type power factor corrector and operational approach thereof, particularly relate to a kind of no bridge type power factor corrector with single inductance element and operational approach thereof.
Background technology
PFC (powerfactorcorrection, PFC) circuit is a kind of power-switching circuit being widely used in electronic installation at present, and it can improve alternating current power supply so that voltage and electric current can become synchronous state as far as possible.PFC (PFC) can represent the electronic product utilization ratio to electric energy: power factor is more high, illustrates that the utilization ratio of electric energy is more high, and vice versa.Therefore, electronic product is normally introduced into power factor corrector, so can greatly improve the utilization ratio to electric energy.
Refer to Fig. 1, for the circuit diagram of prior art full-bridge type power factor corrector.Owing to boost power factor corrector (boostPFC) can reach high merit because of the effect with low harmony wave with single-level circuit, therefore the most often use as power factor correction function.This boost power factor corrector is made up 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 corrector is electrically connected an external ac power source 10A, and generally 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, the phase place making input current follows input voltage, and reaches the purpose of High Power Factor.Additionally, between this external ac power source 10A and this boost power factor corrector, an Electromagnetic interference filter 11A also can be electrically connected, to eliminate the noise of this external ac power source 10A.
In traditional boost power factor corrector, power consumption produced by the bridge diode (bridgediode) of this bridge rectifier 12A generally accounts for overall transformation loss higher proportion, therefore causes reducing conversion efficiency.
Refer to Fig. 2, for the circuit diagram of prior art no bridge type power factor corrector.The circuit diagram of this no bridge type power factor corrector 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 commutation diode 281A, one second commutation diode 282A, one first bypass diode 29_1A and one second bypass diode 29_2A.This no bridge type power factor corrector is electrically connected an external ac power source 20A, and generally 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, the phase place making input current follows input voltage, and reaches the purpose of High Power Factor.Additionally, between this external ac power source 20A and this no bridge type power factor corrector, an Electromagnetic interference filter 21A also can be electrically connected, to eliminate the noise of this external ac power source 20A.
Owing to tradition no bridge type power factor corrector adopts two inductance elements (that is this first inductance 231A and this second inductance 232A) to change the use of (energy storage with release can) as the energy when external ac power source 20A is positive and negative half cycle, and an inductance is responsible for the operation of positive half cycle, another inductance is then responsible for the operation of negative half period, that is, no matter when positive half cycle or negative half period are powered, wherein an inductance is then for idle (idle) situation, so by low for the utilization rate that makes inductance element.Furthermore, due to inductance (choke) itself characteristic (unshakable in one's determination, coiling ... etc.), generally shared space requirement is bigger.
Therefore, how to design a kind of no bridge type power factor corrector with single inductance element and operational approach thereof, utilize the operation that single inductance element provides energy storage and releases energy, to provide the PFC of input power, and reduce loss raising conversion efficiency, save volumetric spaces shared by inductance element, and improve effect of inductance element utilization rate, be intended to, for the present invention, the big problem that row overcomes and solves.
Summary of the invention
One purpose of the present invention is in that to provide a kind of no bridge type power factor corrector with single inductance element, to overcome problem of the prior art.
This no bridge type power factor corrector with single inductance element is electrically connected at an alternating current power supply.This no bridge type power factor corrector comprises an inductance element, one first switch, a second switch, one first diode, one second diode, an electric capacity, one first commutation diode and one second commutation diode.This inductance element has one first end and one second end.This first switch has one first end and one second end, and this first end connects one first end of this alternating current power supply, and this second end connects this first end of this inductance element.This second switch has one first end and one second end, and this first end connects one second end of this alternating current power supply, and this second end connects this second end of this inductance element.This first diode has an anode and a negative electrode, and this anode connects this first end of this inductance element.This second diode has an anode and a negative electrode, and this anode connects this second end of this inductance element, and this negative electrode connects this negative electrode of this first diode.This electric capacity has one 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 commutation diode has an anode and a negative electrode, and this anode connects this second end of this electric capacity, and this negative electrode connects this first end of this first switch.This second commutation diode has an anode and a negative electrode, and this anode connects this second end of this electric capacity, and this negative electrode connects this first end of this second switch.Wherein, when this alternating current power supply is positive half cycle or negative half period, this first switch is controlled to be on or off by one first control signal and one second control signal with this second switch respectively, to provide PFC to this alternating current power supply.
Another object of the present invention is to provide the operational approach of a kind of no bridge type power factor corrector with single inductance element, to overcome problem of the prior art.
This no bridge type power factor corrector is electrically connected at an alternating current power supply.The step of this mode of operation comprises (a) provides an inductance element, has one first end and one second end；B () provides one first switch and a second switch, this first switch has one first end and one second end, this first end connects one first end of this alternating current power supply, this second end connects this first end of this inductance element, this second switch has one first end and one second end, this first end connects one second end of this alternating current power supply, and this second end connects this second end of this inductance element；C () provides one first diode and one second diode, this first diode has an anode and a negative electrode, this anode connects this first end of this inductance element, this second diode has an anode and a negative electrode, this anode connects this second end of this inductance element, and this negative electrode connects this negative electrode of this first diode；D () provides an electric capacity, have one 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；E () provides one first commutation diode and one second commutation diode, this first commutation diode has an anode and a negative electrode, this anode connects this second end of this electric capacity, this negative electrode connects this first end of this first switch, this second commutation diode has an anode and a negative electrode, this anode connects this second end of this electric capacity, and this negative electrode connects this first end of this second switch；F (), when this alternating current power supply is positive half cycle or negative half period, this first switch is controlled to be on or off by one first control signal and one second control signal with this second switch respectively, to provide PFC to this alternating current power supply.
Describe the present invention below in conjunction with the drawings and specific embodiments, 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 corrector；
Fig. 3 is the circuit diagram that the present invention has the no bridge type power factor corrector of single inductance element；
Fig. 4 A is that this no bridge type power factor corrector of the present invention operates in alternating current power supply and is positive half cycle and inductance element is circuit diagram during stored energy operation；
Fig. 4 B is that this no bridge type power factor corrector of the present invention operates in alternating current power supply and is positive half cycle and inductance element is release circuit diagram when can operate；
Fig. 5 A is that this no bridge type power factor corrector of the present invention operates in alternating current power supply and is negative half period and inductance element is circuit diagram during stored energy operation；
Fig. 5 B is that this no bridge type power factor corrector of the present invention operates in alternating current power supply and is negative half period and inductance element is release circuit diagram when can operate；And
Fig. 6 is the flow chart of this no bridge type power factor corrector operational approach of the present invention.
Wherein, accompanying drawing labelling
Prior art
10A external ac power source
11A Electromagnetic interference filter
12A bridge rectifier
13A inductance
14A switchs
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 first switchs
24_2A second switch
25_1A the first diode
25_2A the second diode
26A resistance
27A electric capacity
28_1A the first commutation diode
28_2A the second commutation diode
29_1A the first bypass diode
29_2A the second bypass diode
The present invention
Vac alternating current power supply
Lp inductance element
Sw1 first switchs
Sw2 second switch
Dp1 the first diode
Dp2 the second diode
Cp electric capacity
Dr1 the first commutation diode
Dr2 the second commutation diode
Db1 the first bypass diode
Db2 the second bypass diode
F_emi Electromagnetic interference filter
Vac_1 alternating current power supply the first end
Vac_2 alternating current power supply the second end
Lp_1 inductance element the first end
Lp_2 inductance element the second end
Sw1_1 first switchs the first end
Sw1_2 first switchs the second end
Sw2_1 second switch the 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 the first end
Cp_2 electric capacity the second end
Dr1_1 the first commutation diode the first end
Dr1_2 the first commutation diode the second end
Dr2_1 the second commutation diode the first end
Dr2_2 the second commutation diode the second end
Db1_1 the first bypass diode the first end
Db1_2 the first bypass diode the second end
Db2_1 the second bypass diode the first end
Db2_2 the 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
Detailed description of the invention
Hereby the technical content and a detailed description for the present invention, coordinate accompanying drawing to illustrate as follows:
Refer to Fig. 3, there is for the present invention circuit diagram of the no bridge type power factor corrector of single inductance element.This no bridge type power factor corrector is electrically connected at an alternating current power supply Vac.This no bridge type power factor corrector comprises an inductance component L p, one first switch Sw1, a second switch Sw2, one first diode Dp1, one second diode Dp2, an electric capacity Cp, one first commutation diode Dr1 and one second commutation diode Dr2.In addition, an Electromagnetic interference filter (EMIfilter) F_emi it is electrically connected between this no bridge type power factor corrector and this alternating current power supply Vac, this Electromagnetic interference filter F_emi receives this alternating current power supply Vac, to eliminate the noise of this alternating current power supply Vac.As it is shown on figure 3, this inductance component L p has one first end Lp_1 and one second end Lp_2.This first switch has one first end Sw1_1 and one second end Sw1_2, this first end Sw1_1 and connects this first end Lp_1 that the one first end Vac_1 of this alternating current power supply Vac, this second end Sw1_2 connect this inductance component L p.This second switch Sw2 has one first end Sw2_1 and one second end Sw2_2, this first end Sw2_1 and connects this second end Lp_2 that the one second end Vac_2 of this alternating current power supply Vac, this second end Sw2_2 connect this inductance component L p.Wherein, this first switch Sw1 and this second switch Sw2 is a metal oxide semiconductcor field effect transistor (MOSFET), a bipolar junction transistors (BJT) or an igbt (IGBT), but is not limited.This first diode Dp1 has this first end Lp_1 that an an anode Dp1_1 and negative electrode Dp1_2, this anode Dp1_1 connect this inductance component L p.This second diode Dp2 has an an anode Dp2_1 and negative electrode Dp2_2, this anode Dp2_1 and connects this negative electrode Dp1_2 that this second end Lp_2, this negative electrode Dp2_2 of this inductance component L p connect this first diode Dp1.This electric capacity Cp has one first end Cp_1 and one second end Cp_2, this first end Cp_1 and connects this negative electrode Dp1_2 of this first diode Dp_1, and this second end Cp_2 connects an earth point (sign).This first commutation diode Dr1 has an an anode Dr1_1 and negative electrode Dr1_2, this anode Dr1_1 and connects this first end Sw1_1 that this second end Cp_2, this negative electrode Dr1_2 of this electric capacity Cp connect this first switch Sw1.This second commutation diode Dr2 has an an anode Dr2_1 and negative electrode Dr2_2, this anode Dr2_1 and connects this first end Sw2_1 that this second end Cp_2, this negative electrode Dr2_2 of this electric capacity Cp connect this second switch Sw2.Wherein, when this alternating current power supply Vac is positive half cycle or negative half period, this first switch Sw1 and this second switch Sw2 is controlled to be on or off by one first control signal Sc1 and one second control signal Sc2 respectively, to provide PFC to this alternating current power supply Vac.Being worth mentioning, this no bridge type power factor corrector also comprises one first bypass diode Db1 and one second bypass diode Db2.This first bypass diode Db1 has an an anode Db1_1 and negative electrode Db1_2; this anode Db1_1 connects this first end Sw1_1 of this first switch Sw1; this negative electrode Db1_2 connects this first end Cp_1 of this electric capacity Cp, to provide the overvoltage protection of this first switch Sw1, this first diode Dp1, this first commutation diode Dr1 and this inductance component L p.This second bypass diode Db2 has an an anode Db2_1 and 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 electric capacity Cp, to provide the overvoltage protection of this second switch Sw2, this second diode Dp2, this second commutation diode Dr2 and this inductance component L p.
It is operation when positive half cycle or negative half period as this no bridge type power factor corrector in this alternating current power supply Vac, cooperation accompanying drawing is described in detail below.
Refer to Fig. 4 A, operate in alternating current power supply for this no bridge type power factor corrector of the present invention and be positive half cycle and inductance element is circuit diagram during stored energy operation.It is worth mentioning, this no bridge type power factor corrector also comprises a control unit Uc, to produce this first control signal Sc1 and this second control signal Sc2, control this first switch Sw1 and this second switch Sw2 respectively, and then provide PFC to this alternating current power supply Vac.When this alternating current power supply Vac is positive half cycle, and when this inductance component L p is stored energy operation (energy-storingoperation), this control unit Uc switches this first switch Sw1 and this second switch Sw2 so that this alternating current power supply Vac passes 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 alternating current power supply Vac, this first switch Sw1, this inductance component L p, this second switch Sw2, return this alternating current power supply Vac and constituted.
Refer to Fig. 4 B, operate in alternating current power supply for this no bridge type power factor corrector of the present invention and be positive half cycle and inductance element is release circuit diagram when can operate.When this alternating current power supply Vac is positive half cycle, and when this inductance component L p can operate (energy-releasingoperation) for releasing, this control unit Uc switches this first switch Sw1 and ends (turnedoff) this second switch Sw2 so that this inductance component L p is released loop Lper can be provided stored energy to rear end output 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 electric capacity Cp, this second commutation diode Dr2, this alternating current power supply Vac, this first switch Sw1, return this inductance component L p and constituted.
Refer to Fig. 5 A, operate in alternating current power supply for this no bridge type power factor corrector of the present invention and be negative half period and inductance element is circuit diagram during stored energy operation.When this alternating current power supply Vac is negative half period, and when this inductance component L p is stored energy operation (energy-storingoperation), this control unit Uc switches this first switch Sw1 and this second switch Sw2 so that this alternating current power supply Vac passes 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 alternating current power supply Vac, this second switch Sw2, this inductance component L p, this first switch Sw1, return this alternating current power supply Vac and constituted.
Refer to Fig. 5 B, operate in alternating current power supply for this no bridge type power factor corrector of the present invention and be negative half period and inductance element is release circuit diagram when can operate.When this alternating current power supply Vac is negative half period, and when this inductance component L p can operate (energy-releasingoperation) for releasing, this control unit Uc switches this second switch Sw2 and ends (turnedoff) this first switch Sw1 so that this inductance component L p is released loop Lner can be provided stored energy to rear end output 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 electric capacity Cp, this first commutation diode Dr1, this alternating current power supply Vac, this second switch Sw2, return this inductance component L p and constituted.
Refer to Fig. 6, for the flow chart of this no bridge type power factor corrector operational approach of the present invention.This no bridge type power factor corrector is electrically connected at an alternating current power supply.Wherein, being electrically connected an Electromagnetic interference filter (EMIfilter) between this no bridge type power factor corrector and this alternating current power supply, this Electromagnetic interference filter receives this alternating current power supply, to eliminate the noise of this alternating current power supply.The step of this mode of operation comprises offer one inductance element (S10), and this inductance element has one first end and one second end.One first switch and a second switch (S20) are provided, this first switch has one first end and one second end, this first end connects one first end of this alternating current power supply, this second end connects this first end of this inductance element, this second switch has one first end and one second end, this first end connects one second end of this alternating current power supply, and this second end connects this second end of this inductance element.Wherein, this first switch is a metal oxide semiconductcor field effect transistor (MOSFET), a bipolar junction transistors (BJT) or an igbt (IGBT) with this second switch, but is not limited.One first diode and one second diode (S30) are provided, this first diode has an anode and a negative electrode, this anode connects this first end of this inductance element, this second diode has an anode and a negative electrode, this anode connects this second end of this inductance element, and this negative electrode connects this negative electrode of this first diode.Thering is provided an electric capacity (S40), this electric capacity has one 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 commutation diode and one second commutation diode (S50) are provided, this first commutation diode has an anode and a negative electrode, this anode connects this second end of this electric capacity, this negative electrode connects this first end of this first switch, this second commutation diode has an anode and a negative electrode, this anode connects this second end of this electric capacity, and this negative electrode connects this first end of this second switch.When this alternating current power supply is positive half cycle or negative half period, this first switch is controlled to be on or off by one first control signal and one second control signal with this second switch respectively, to provide PFC (S60) to this alternating current power supply.Wherein, this first control signal is produced by a control unit with this second control signal.Being worth mentioning, the step of this mode of operation also comprises offer one first bypass diode and one second bypass diode.This first bypass diode has an anode and a negative electrode; this anode connects this first end of this first switch; this negative electrode connects this first end of this electric capacity, to provide the overvoltage protection of this first switch, this first diode, this first commutation diode and this inductance element.This second bypass diode has an anode and a negative electrode; this anode connects this first end of this second switch; this negative electrode connects this first end of this electric capacity, to provide the overvoltage protection of this second switch, this second diode, this second commutation diode and this inductance element.
It is operation when positive half cycle or negative half period as this no bridge type power factor corrector in this alternating current power supply, will be described in detail later.
When this alternating current power supply is positive half cycle, and when this inductance element is stored energy operation (energy-storingoperation), this control unit switches this first switch and this second switch so that this alternating current power supply passes through a positive half cycle tank circuit to this inductance element energy storage.Wherein, this positive half cycle tank circuit sequentially by this alternating current power supply, this first switch, this inductance element, this second switch, return this alternating current power supply and constituted.When this alternating current power supply is positive half cycle, and when this inductance element can operate (energy-releasingoperation) for releasing, this control unit switches this first switch and ends (turnedoff) this second switch so that this inductance element is released loop can be provided stored energy to rear end output 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 commutation diode, this alternating current power supply, this first switch, return this inductance element and constituted.When this alternating current power supply is negative half period, and when this inductance element is stored energy operation (energy-storingoperation), this control unit switches this first switch and this second switch so that this alternating current power supply passes through a negative half period tank circuit to this inductance element energy storage.Wherein, this negative half period tank circuit sequentially by this alternating current power supply, this second switch, this inductance element, this first switch, return this alternating current power supply and constituted.When this alternating current power supply is negative half period, and when this inductance element can operate (energy-releasingoperation) for releasing, this control unit switches this second switch and ends (turnedodd) this first switch so that this inductance element is released loop can be provided stored energy to rear end output 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 commutation diode, this alternating current power supply, this second switch, return this inductance element and constituted.
In sum, the present invention has following features and advantage:
1, utilize no bridge type circuit framework, bridge diode can be used, be therefore greatly reduced loss, and then improve conversion efficiency；
2, utilize this inductance component L p single, save shared volumetric spaces；And
3, utilizing this inductance component L p single, the use of energy conversion when being positive and negative half cycle as this alternating current power supply Vac, to improve the utilization rate of this inductance component L p.
Certainly; the present invention also can have other various embodiments; when without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art are when can make various corresponding change and deformation according to the present invention, but these change accordingly and deformation all should belong to the scope of the claims appended by the present invention.
Claims (6)
1. there is a no bridge type power factor corrector for single inductance element, be electrically connected at an alternating current power supply, it is characterised in that this no bridge type power factor corrector comprises:
One inductance element, has one first end and one second end；
One first switch, has one first end and one second end, and this first end connects one first end of this alternating current power supply, and this second end connects this first end of this inductance element；
One second switch, has one first end and one second end, and this first end connects one second end of this alternating current power supply, and this second end connects this second end of this inductance element；
One first diode, has an anode and a negative electrode, and this anode connects this first end of this inductance element and this second end of this first switch；
One second diode, has an anode and a negative electrode, and this anode connects this second end of this inductance element and this second end of this second switch, and this negative electrode connects this negative electrode of this first diode；
One electric capacity, has one first end and one second end, and this first end connects this negative electrode of this first diode and this negative electrode of this second diode, and this second end connects an earth point；
One first commutation diode, has an anode and a negative electrode, and this anode connects this second end of this electric capacity, and this negative electrode connects this first end of this first switch and this first end of this alternating current power supply；
One second commutation diode, has an anode and a negative electrode, and this anode connects this second end of this electric capacity, and this negative electrode connects this first end of this second switch and this second end of this alternating current power supply；
One first bypass diode; there is an anode and a negative electrode; this anode connects this negative electrode of this first end of this first switch, this first end of this alternating current power supply and this first commutation diode; this negative electrode connects this negative electrode of this first end of this electric capacity, this negative electrode of this first diode and this second diode, to provide the overvoltage protection of this first switch, this first diode, this first commutation diode and this inductance element；And
One second bypass diode; there is an anode and a negative electrode; this anode connects this negative electrode of this first end of this second switch, this second end of this alternating current power supply and this second commutation diode; this negative electrode connects this negative electrode of this first end of this electric capacity, this negative electrode of this first diode, this negative electrode of this second diode and this first bypass diode, to provide the overvoltage protection of this second switch, this second diode, this second commutation diode and this inductance element；
Wherein, when this alternating current power supply is positive half cycle or negative half period, this first switch is controlled to be on or off by one first control signal and one second control signal with this second switch respectively, to provide PFC to this alternating current power supply；
Wherein, this no bridge type power factor corrector also comprises a control unit, to produce this first control signal and this second control signal；When this alternating current power supply 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 alternating current power supply by a positive half cycle tank circuit to this inductance element energy storage, wherein this positive half cycle tank circuit sequentially by this alternating current power supply, this first switch, this inductance element, this second switch, return this alternating current power supply and constituted；When this alternating current power supply 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 stored energy can be provided and to export to rear end in 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 commutation diode, this alternating current power supply, this first switch, return this inductance element and constituted；When this alternating current power supply 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 alternating current power supply by a negative half period tank circuit to this inductance element energy storage, wherein, this negative half period tank circuit sequentially by this alternating current power supply, this second switch, this inductance element, this first switch, return this alternating current power supply and constituted；When this alternating current power supply 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, this inductance element is made to release loop can provide stored energy to rear end output 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 commutation diode, this alternating current power supply, this second switch, return this inductance element and constituted.
2. no bridge type power factor corrector according to claim 1, it is characterised in that be electrically connected an Electromagnetic interference filter between this no bridge type power factor corrector and this alternating current power supply, to eliminate the noise of this alternating current power supply.
3. no bridge type power factor corrector according to claim 1, it is characterised in that this first switch is a metal oxide semiconductcor field effect transistor, a bipolar junction transistors or an igbt with this second switch.
4. having an operational approach for the no bridge type power factor corrector of single inductance element, this no bridge type power factor corrector is electrically connected at an alternating current power supply, it is characterised in that the step of this operational approach comprises:
A () provides an inductance element, have one first end and one second end；
B () provides one first switch and a second switch, this first switch has one first end and one second end, this first end connects one first end of this alternating current power supply, this second end connects this first end of this inductance element, this second switch has one first end and one second end, this first end connects one second end of this alternating current power supply, and this second end connects this second end of this inductance element；
C () provides one first diode and one second diode, this first diode has an anode and a negative electrode, this anode connects this first end of this inductance element and this second end of this first switch, this second diode has an anode and a negative electrode, this anode connects this second end of this inductance element and this second end of this second switch, and this negative electrode connects this negative electrode of this first diode；
D () provides an electric capacity, have one first end and one second end, and this first end connects this negative electrode of this first diode and this negative electrode of this second diode, and this second end connects an earth point；
E () provides one first commutation diode and one second commutation diode, this first commutation diode has an anode and a negative electrode, this anode connects this second end of this electric capacity, this negative electrode connects this first end of this first switch and this first end of this alternating current power supply, this second commutation diode has an anode and a negative electrode, this anode connects this second end of this electric capacity, and this negative electrode connects this first end of this second switch and this second end of this alternating current power supply；
F (), when this alternating current power supply is positive half cycle or negative half period, this first switch is controlled to be on or off by one first control signal and one second control signal with this second switch respectively, to provide PFC to this alternating current power supply；And
G () provides one first bypass diode and one second bypass diode; this first bypass diode has an anode and a negative electrode; this anode connects this first end of this first switch; this negative electrode connects this first end of this electric capacity, to provide the overvoltage protection of this first switch, this first diode, this first commutation diode and this inductance element；This second bypass diode has an anode and a negative electrode; this anode connects this first end of this second switch; this negative electrode connects this first end of this electric capacity, to provide the overvoltage protection of this second switch, this second diode, this second commutation diode and this inductance element；
Wherein, in step (f), this first control signal is produced by a control unit with this second control signal；
Wherein, when this alternating current power supply 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 alternating current power supply by a positive half cycle tank circuit to this inductance element energy storage, wherein this positive half cycle tank circuit sequentially by this alternating current power supply, this first switch, this inductance element, this second switch, return this alternating current power supply and constituted；When this alternating current power supply 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 stored energy can be provided and to export to rear end in 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 commutation diode, this alternating current power supply, this first switch, return this inductance element and constituted；When this alternating current power supply 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 alternating current power supply by a negative half period tank circuit to this inductance element energy storage, wherein, this negative half period tank circuit sequentially by this alternating current power supply, this second switch, this inductance element, this first switch, return this alternating current power supply and constituted；When this alternating current power supply 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, this inductance element is made to release loop can provide stored energy to rear end output 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 commutation diode, this alternating current power supply, this second switch, return this inductance element and constituted.
5. the operational approach of no bridge type power factor corrector according to claim 4, it is characterised in that be electrically connected an Electromagnetic interference filter between this no bridge type power factor corrector and this alternating current power supply, to eliminate the noise of this alternating current power supply.
6. the operational approach of no bridge type power factor corrector according to claim 4, it is characterised in that this first switch is a metal oxide semiconductcor field effect transistor, a bipolar junction transistors or an igbt with this second switch.
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| CN201210333014.6A CN103683895B (en) | 2012-09-11 | 2012-09-11 | There is no bridge type power factor corrector and the operational approach thereof of single inductance element |
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| CN201210333014.6A CN103683895B (en) | 2012-09-11 | 2012-09-11 | There is no bridge type power factor corrector and the operational approach thereof of single inductance element |
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| EP3879935A1 (en) * | 2020-03-10 | 2021-09-15 | Honeywell International Inc. | Current converter circuit for airfield ground lighting |
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| US20140354246A1 (en) * | 2013-05-30 | 2014-12-04 | Flextronics Ap, Llc | Bridgeless pfc power converter with high efficiency |
| US10432086B1 (en) * | 2018-04-10 | 2019-10-01 | Semiconductor Components Industries, Llc | Methods and systems of bridgeless PFC converters |
| CN112398329B (en) * | 2019-08-14 | 2021-08-31 | 台达电子工业股份有限公司 | Bidirectional power factor correction module |
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| CN103683895A (en) | 2014-03-26 |
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