CN106533218A - Three-phase rectifying circuit and driving control method - Google Patents
Three-phase rectifying circuit and driving control method Download PDFInfo
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- CN106533218A CN106533218A CN201710007016.9A CN201710007016A CN106533218A CN 106533218 A CN106533218 A CN 106533218A CN 201710007016 A CN201710007016 A CN 201710007016A CN 106533218 A CN106533218 A CN 106533218A
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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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/2176—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output
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Abstract
The invention provides a three-phase rectifying circuit and a driving control method. The three-phase rectifying circuit comprises a three-phase circuit, wherein a switching circuit unit is used for carrying out switching of a turn-off action and a turn-on action in one cycle of an alternating current output by an alternating current power supply in each phase of the circuit in the three-phase circuit; through the switching of the turn-off action and the turn-on action of the switching circuit unit, in half cycle that the alternating current is a normal-phase alternating current, a passage that a first common connecting end is connected with a second common connecting end is switched into a passage through which a first saturated inductor and the switching circuit unit go, a passage through which the first saturated inductor and a first driving circuit unit go, a passage through which a second saturated inductor and the switching circuit unit go and a passage through which the second saturated inductor and a third driving circuit unit go respectively. The problems, that the switching loss of a power switch device is relatively great and a diode has relatively high reverse recovery charge caused by the fact that the power switch device is in a hard switching state, of a traditional rectifier are solved.
Description
Technical field
The present invention relates to electronic circuit field, more particularly, to a kind of rectified three-phase circuit and drive control method.
Background technology
It is a kind of high efficiency rectifier topology for occurring in recent years that traditional three-phase tri-level three switchs (Vienna) commutator.
The Vienna commutators have three-level control principle and the resistance to characteristic forced down of device for power switching, efficiency high and low cost, thus obtain
To being widely applied.But, traditional Vienna commutators operationally, as device for power switching is all in hard switching shape
State, hence in so that device for power switching switching loss is larger, and causes diode to have QRR, so as to increased work(
The turn-on consumption of rate switching device, and the electromagnetic interference (EMI) of system is increased, increase the design difficulty of system hardware.
The content of the invention
The present invention provides a kind of rectified three-phase circuit and drive control method, to solve traditional commutator operationally,
Due to device for power switching, device for power switching switching loss is larger caused by the hard switching state, and diode with compared with
The problem of big QRR.
In a first aspect, embodiments providing a kind of rectified three-phase circuit, the rectified three-phase circuit includes first
Public connecting end, the second public connecting end and be connected to first public connecting end and second public connecting end it
Between three-phase circuit, each circuitry phase in three-phase circuit includes：
Alternating current power supply；
First pulsactor and the second pulsactor, the first end of first pulsactor and second pulsactor
First end be connected with the alternating current power supply；
First drive circuit unit and the second drive circuit unit, the first end and second of first drive circuit unit
The first end of drive circuit unit is connected with the second end of first pulsactor, and first drive circuit unit
Second end of the second end and the second drive circuit unit is connected with the second public connecting end；
3rd drive circuit unit and the 4th drive circuit unit, the first end and the 4th of the 3rd drive circuit unit
The first end of drive circuit unit is connected with the second end of second pulsactor, and the 3rd drive circuit unit
Second end of the second end and the 4th drive circuit unit is connected with the second public connecting end；
On-off circuit unit, the first end of the on-off circuit unit and the second end of first pulsactor and described
Terminals after second end of the second pulsactor is connected connect, and the second end of the on-off circuit unit and the second public company
Connect end connection；Wherein,
In a cycle of the alternating current that the on-off circuit unit is exported in the alternating current power supply, timesharing carry out closure and
The switching of disconnection action；By the switching of the closed and disconnected action of the on-off circuit unit, it is positive in the alternating current
In the half period of alternating current, between the first public connecting end and the second public connecting end be used for positive alternating current conducting path according to
The secondary path switched to by the first pulsactor and on-off circuit unit, by the first pulsactor and the first drive circuit list
Unit path, the path by the second pulsactor and on-off circuit unit, by the second pulsactor and the 3rd drive circuit
The path of unit；Within half period of the alternating current for negative alternating current, the first public connecting end and the second public connecting end
Between for the conducting of negative alternating current path be followed successively by the path by the first pulsactor and on-off circuit unit, by the
The path of one pulsactor and the second drive circuit unit, the path by the second pulsactor and on-off circuit unit, pass through
The path of the second pulsactor and the 4th drive circuit unit.
Alternatively, each circuitry phase also includes filter inductance, the first end of first pulsactor and described the
The first end of two pulsactors is connected with the alternating current power supply by the filter inductance, and the alternating current of each circuitry phase
Source is connected with first public connecting end.
Alternatively, the of the second end of the first drive circuit unit of each circuitry phase and the 3rd drive circuit unit
The first electric capacity and the first load that two ends are arranged in parallel is connected with second public connecting end, and each circuitry phase
The second electric capacity that second end of the second drive circuit unit and the second end of the 4th drive circuit unit are arranged in parallel and
Second load is connected with second public connecting end.
Alternatively, first drive circuit unit includes the first diode, and second drive circuit unit includes
Two diodes, and the negative pole of the positive pole of first diode and second diode with first pulsactor
Two ends connect；3rd drive circuit unit includes the 3rd diode, and the 4th drive circuit unit includes the four or two pole
Pipe, and second end company of the negative pole of the positive pole and the 4th diode of the 3rd diode with second pulsactor
Connect；The first electric capacity and the first load and second that the negative pole of the negative pole of the first diode and the 3rd diode is arranged in parallel
Public connecting end connects, the second electric capacity that the positive pole of the positive pole of the second diode and the 4th diode is arranged in parallel and the
Two loads are connected with the second public connecting end.
Alternatively, the on-off circuit unit includes first switch group and second switch group, the first switch group connection
Between the second end of first pulsactor and the second public connecting end, the second switch group is connected to described second and satisfies
And inductance the second end and the second public connecting end between.
Alternatively, the first switch group include being parallel with diode the first insulated gate bipolar transistor IGBT pipe and
The 2nd IGBT pipes of diode are parallel with, wherein the colelctor electrode of IGBT pipes is connected with the second end of first pulsactor
Connect, the emitter stage of IGBT pipes is connected with the emitter stage of the 2nd IGBT pipes；The second switch group includes parallel connection
The 3rd IGBT pipes for having diode and the 4th IGBT pipes for being parallel with diode, wherein the colelctor electrode of the 3rd IGBT pipes and institute
State the second end connection of the second pulsactor, the emitter stage of the 3rd IGBT pipes emitter stage respectively with the 2nd IGBT pipes
Connect with the emitter stage of the 4th IGBT pipes, the colelctor electrode of the 2nd IGBT pipes is equal with the colelctor electrode of the 4th IGBT pipes
It is connected with second public connecting end.
On the other hand, the embodiment of the present invention provides a kind of drive control method of rectified three-phase circuit, the drive control side
Method is applied to the rectified three-phase circuit in first aspect, and the drive control method includes：
Within the half period that alternating current is positive alternating current, successively to on-off circuit unit output the first control letter
Number, the on-off circuit unit conducting is made, is constituted between the first pulsactor and the on-off circuit unit and is connected described first
The path of public connecting end and second public connecting end；The second control signal is exported to the on-off circuit unit, institute is made
The disconnection of on-off circuit unit is stated, between the first pulsactor and first drive circuit unit, constitutes that to connect described first public
The path of connection end and second public connecting end；The 3rd control signal is exported to the on-off circuit unit, described opening is made
Close circuit unit conducting, between the second pulsactor and the on-off circuit unit constitute connect first public connecting end and
The path of second public connecting end；The 4th control signal is exported to the on-off circuit unit, the on-off circuit list is made
Unit disconnect, between the second pulsactor and the 3rd drive circuit unit constitute connect first public connecting end with it is described
The path of the second public connecting end；
Within half period of the alternating current for negative sense alternating current, successively to the 5th control letter of on-off circuit unit output
Number, the on-off circuit unit conducting is made, is constituted between the first pulsactor and the on-off circuit unit and is connected described first
The path of public connecting end and second public connecting end；The 6th control signal is exported to the on-off circuit unit, institute is made
The disconnection of on-off circuit unit is stated, between the first pulsactor and second drive circuit unit, constitutes that to connect described first public
The path of connection end and second public connecting end；The 7th control signal is exported to the on-off circuit unit, described opening is made
Close circuit unit conducting, between the second pulsactor and the on-off circuit unit constitute connect first public connecting end and
The path of second public connecting end；The 8th control signal is exported to the on-off circuit unit, the on-off circuit list is made
Unit disconnect, between the second pulsactor and the 4th drive circuit unit constitute connect first public connecting end with it is described
The path of the second public connecting end.
Alternatively, the drive control method also includes：Within the half period that alternating current is positive alternating current, successively to
One switches set exports the first control signal, turns on first switch group, the company of composition between the first pulsactor and first switch group
Lead to the path of first public connecting end and second public connecting end；The second control signal is exported to first switch group,
Disconnect second switch group, constitute between the first pulsactor and the first drive circuit unit and connect first public connecting end
With the path of second public connecting end；The 3rd control signal is exported to second switch group, turns on the 3rd switches set, second
Constitute between pulsactor and second switch group first public connecting end is connected with the path of second public connecting end；
The 4th control signal is exported to second switch group, the disconnection of second switch group, the second pulsactor and the 3rd drive circuit unit is made
Between constitute the path of connection first public connecting end and second public connecting end；It is negative sense alternating current in alternating current
Half period in, export the 5th control signal to the first switch group successively, make first switch group unit conducting, first
Constitute between pulsactor and the first switch group first public connecting end is connected with second public connecting end
Path；The 6th control signal is exported to the first switch group, disconnects the first switch group, the first pulsactor with it is described
The path of connection first public connecting end and second public connecting end is constituted between second drive circuit unit；To institute
State second switch group and export the 7th control signal, the on-off circuit unit conducting, the second pulsactor is opened with described second
The path of connection first public connecting end and second public connecting end is constituted between the group of pass；To the second switch group
The 8th control signal is exported, disconnects the second switch group, between the second pulsactor and the 4th drive circuit unit
Constitute the path of connection first public connecting end and second public connecting end.
The invention has the beneficial effects as follows：
The embodiment of the present invention utilizes the inductance characteristic of the first pulsactor and the second pulsactor so that Time-sharing control is switched
During the switching of the closed and disconnected action of circuit unit, within the half period that alternating current is positive alternating current, first is commonly connected
Path between end and the second public connecting end for the conducting of positive alternating current is switched to by the first pulsactor successively and is opened
Close the path of circuit unit, the path by the first pulsactor and the first drive circuit unit, by the second pulsactor and
The path of on-off circuit unit, by the second pulsactor and the path of the 3rd drive circuit unit.So in alternating current for just
Into the half period of alternating current, it is possible to use pulsactor has initial inductance amount and when the electric current for flowing through pulsactor reaches one
During definite value, impedance of the pulsactor to electric current drops to zero characteristic so that flow through the first pulsactor and the second pulsactor
Electric current can not undergo mutation so that on-off circuit unit conducting when electric current it is almost nil, this causes on-off circuit list
Unit works in zero current turning-on state, so that the turn-on consumption of on-off circuit unit is zero.Additionally, working as on-off circuit unit
For diode when, while can utilize pulsactor characteristic so that in diode reverse current change with pulsactor in
Curent change it is consistent, it is so as to reduce the QRR of diode to a great extent, whole so as to reduce three-phase
The power attenuation of current circuit, solves traditional commutator operationally, as device for power switching is led in hard switching state
The device for power switching switching loss of cause is larger, and diode has the problem of larger QRR.
Description of the drawings
Fig. 1 represents the circuit block diagram of rectified three-phase circuit in the first embodiment of the present invention；
Fig. 2 represents the circuit diagram of rectified three-phase circuit in the first embodiment of the present invention.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here
Limited.On the contrary, there is provided these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
First embodiment：
As shown in figure 1, for the circuit block diagram of rectified three-phase circuit in the present embodiment.The rectified three-phase circuit includes that first is public
It is total to connection end 1, the second public connecting end 2 and be connected between the first public connecting end 1 and the second public connecting end 2 three
Circuitry phase, each circuitry phase in the three-phase circuit include：
Alternating current power supply 3；
The of first pulsactor 4 and the second pulsactor 5, the first end of the first pulsactor 4 and the second pulsactor 5
One end is connected with alternating current power supply 3；
First drive circuit unit 6 and the second drive circuit unit 7, the first end and second of the first drive circuit unit 6
The first end of drive circuit unit 7 is connected with the second end of the first pulsactor 4, and the second of the first drive circuit unit 6
Second end of end and the second drive circuit unit 7 is connected with the second public connecting end 2；
3rd drive circuit unit 8 and the 4th drive circuit unit 9, the first end and the 4th of the 3rd drive circuit unit 8
The first end of drive circuit unit 9 is connected with the second end of the second pulsactor 5, and the second of the 3rd drive circuit unit 8
Second end of end and the 4th drive circuit unit 9 is connected with the second public connecting end 2；
On-off circuit unit 10, the first end of on-off circuit unit 10 are full with the second end of the first pulsactor 4 and second
Terminals after being connected with the second end of inductance 5 connect, and the second end of on-off circuit unit 10 is connected with the second public connecting end 2
Connect；Wherein,
In a cycle of the alternating current that on-off circuit unit 10 is exported in alternating current power supply 3, timesharing carries out closed and disconnected
The switching of action；By the switching of the closed and disconnected action of on-off circuit unit 10, it is the half of positive alternating current in alternating current
In cycle, the path for being used for the conducting of positive alternating current between the first public connecting end 1 and the second public connecting end 2 is switched to successively
By the path of the first pulsactor 4 and on-off circuit unit 10, by the first pulsactor 4 and the first drive circuit unit 6
Path, the path by the second pulsactor 5 and on-off circuit unit 10, electricity is driven by the second pulsactor 5 and the 3rd
The path of road unit 8；Within half period of the alternating current for negative alternating current, the first public connecting end 1 and the second public connecting end 2
Between be followed successively by the path by the first pulsactor 4 and on-off circuit unit 10, logical for the path of negative alternating current conducting
Cross the path of the first pulsactor 4 and the second drive circuit unit 7, by the second pulsactor 5 and on-off circuit unit 10
Path, by the path of the second pulsactor 5 and the 4th drive circuit unit 9.
So, by the switching of the closed and disconnected action of on-off circuit unit 10, it is positive alternating current in alternating current
In half period, close in first job process, i.e. on-off circuit unit 10, the first pulsactor 4 and on-off circuit unit 10
When constituting the path between the first public connecting end 1 and the second public connecting end 2, using pulsactor have initial inductance amount and
When the electric current for flowing through pulsactor reaches certain value, impedance of the pulsactor to electric current drops to zero characteristic so that flow through
The electric current of the first pulsactor 4 can not be undergone mutation, so that the electric current in conducting of on-off circuit unit 10 is almost nil, this
So that on-off circuit cell operation realizes the soft open-minded of on-off circuit unit in zero current turning-on state, so that switch
The turn-on consumption of circuit unit is zero.Disconnection is switched to by closure in second course of work, i.e. on-off circuit unit 10, first
When pulsactor 4 and the first drive circuit unit 6 constitute the path between the first public connecting end 1 and the second public connecting end 2,
As the first pulsactor 4 drops to zero during first job to the impedance of electric current, therefore when 4 He of the first pulsactor
When first drive circuit unit 6 constitutes the path between the first public connecting end 1 and the second public connecting end 2, can be with maximum journey
The power for reducing consuming on turning circuit of degree.In the 3rd course of work, i.e. on-off circuit unit 10 is switched to by disconnection and is closed
Close, the second pulsactor 5 and on-off circuit unit 10 constitute leading between the first public connecting end 1 and the second public connecting end 2
Lu Shi, now has initial inductance amount and when the electric current for flowing through pulsactor reaches certain value using pulsactor, saturation electricity
Feel the characteristic that the impedance to electric current drops to zero so that the electric current for flowing through the second pulsactor 5 can not be undergone mutation, so that
The electric current in conducting of on-off circuit unit 10 is almost nil, and this causes on-off circuit unit 10 to work in zero current turning-on state,
The soft open-minded of on-off circuit unit is realized, so that the turn-on consumption of on-off circuit unit is zero, if additionally, now first
Drive circuit unit is diode, then, while the electric current for flowing through the second pulsactor 5 can not be undergone mutation, flow through diode
Reverse current can not equally undergo mutation so that in diode reverse current change with the second pulsactor 5 in
Curent change it is consistent, so reduce the QRR of diode to a great extent, it is whole so as to reduce three-phase
The power attenuation of current circuit.Disconnection, the second saturation electricity are switched to by closure in the 4th course of work, i.e. on-off circuit unit 10
When sense 5 and the 3rd drive circuit unit 8 constitute the path between the first public connecting end 1 and the second public connecting end 2, due to the
Two pulsactors 5 drop to zero in the 3rd course of work to the impedance of electric current, therefore when the second pulsactor 5 and the 3rd drives
When dynamic circuit unit 8 constitutes the path between the first public connecting end 1 and the second public connecting end 2, farthest can drop
The power consumed on low turning circuit.
Additionally, the switching of the closed and disconnected action by on-off circuit unit 10, is negative alternating current in alternating current
In half period, close in first job process, i.e. on-off circuit unit 10, the first pulsactor 4 and on-off circuit unit 10
When constituting the path between the first public connecting end 1 and the second public connecting end 2, using pulsactor have initial inductance amount and
When the electric current for flowing through pulsactor reaches certain value, impedance of the pulsactor to electric current drops to zero characteristic so that flow through
The electric current of the first pulsactor 4 can not be undergone mutation, so that the electric current in conducting of on-off circuit unit 10 is almost nil, this
So that on-off circuit cell operation realizes the soft open-minded of on-off circuit unit in zero current turning-on state, so that switch
The turn-on consumption of circuit unit is zero.Disconnection is switched to by closure in second course of work, i.e. on-off circuit unit 10, first
When pulsactor 4 and the second drive circuit unit 7 constitute the path between the first public connecting end 1 and the second public connecting end 2,
As the first pulsactor 4 drops to zero during first job to the impedance of electric current, therefore when 4 He of the first pulsactor
When second drive circuit unit 7 constitutes the path between the first public connecting end 1 and the second public connecting end 2, can be with maximum journey
The power for reducing consuming on turning circuit of degree.In the 3rd course of work, i.e. on-off circuit unit 10 is switched to by disconnection and is closed
Close, the second pulsactor 5 and on-off circuit unit 10 constitute leading between the first public connecting end 1 and the second public connecting end 2
Lu Shi, now has initial inductance amount and when the electric current for flowing through pulsactor reaches certain value using pulsactor, saturation electricity
Feel the characteristic that the impedance to electric current drops to zero so that the electric current for flowing through the second pulsactor 5 can not be undergone mutation, so that
The electric current in conducting of on-off circuit unit 10 is almost nil, and this causes on-off circuit unit 10 to work in zero current turning-on state,
The soft open-minded of on-off circuit unit is realized, so that the turn-on consumption of on-off circuit unit is zero, if additionally, now first
Drive circuit unit is diode, then, while the electric current for flowing through the second pulsactor 5 can not be undergone mutation, flow through diode
Reverse current can not equally undergo mutation so that in diode reverse current change with the second pulsactor 5 in
Curent change it is consistent, so reduce the QRR of diode to a great extent, it is whole so as to reduce three-phase
The power attenuation of current circuit.Disconnection, the second saturation electricity are switched to by closure in the 4th course of work, i.e. on-off circuit unit 10
When sense 5 and the 4th drive circuit unit 9 constitute the path between the first public connecting end 1 and the second public connecting end 2, due to the
Two pulsactors 5 drop to zero in the 3rd course of work to the impedance of electric current, therefore when the second pulsactor 5 and the 3rd drives
When dynamic circuit unit 8 constitutes the path between the first public connecting end 1 and the second public connecting end 2, farthest can drop
The power consumed on low turning circuit.
So, in the cycle period of the alternating current of alternating current power supply output, on-off circuit cell operation is enabled in zero
Electric current opening state, so that the turn-on consumption of on-off circuit unit is zero, and enables to the reverse current in diode
Change is consistent with the curent change in pulsactor, so as to reduce the QRR of diode to a great extent,
So as to reduce the power attenuation of rectified three-phase circuit, traditional commutator is solved operationally, due to device for power switching
It is larger in device for power switching switching loss caused by hard switching state, and diode has larger QRR
Problem.
Further, Fig. 2 represents the current diagram in the first embodiment of the present invention in rectified three-phase circuit.This three
Each circuitry phase all same in commutating phase circuit, here only mark the arbitrary circuitry phase of one to explain.Referring to Fig. 1 and Fig. 2,
Each circuitry phase also passes through filter including the first end of filter inductance 11, the first end of the first pulsactor 4 and the second pulsactor 5
Ripple inductance 11 is connected with alternating current power supply 3, and the alternating current power supply 3 of each circuitry phase is connected with the first public connecting end 1.So,
Increase filter inductance 11 between alternating current power supply 3 and the first pulsactor 4 and the second pulsactor 5, filter effect can be improved.
Further, with continued reference to Fig. 1 and Fig. 2, second end and the 3rd of the first drive circuit unit 6 of each circuitry phase
The first electric capacity 12 and the first load 13 and the second public connecting end 2 that second end of drive circuit unit 8 is arranged in parallel
Connect, and second end of the second drive circuit unit 7 and the second end of the 4th drive circuit unit 9 of each circuitry phase pass through
The second electric capacity 14 being arranged in parallel and the second load 15 are connected with the second public connecting end 2.So, in 4 He of the first pulsactor
First drive circuit unit 6 constitutes the path between the first public connecting end 1 and the second public connecting end 2, and in the second saturation
When inductance 5 and the 3rd drive circuit unit 8 constitute the path between the first public connecting end 1 and the second public connecting end 2, electric current
The first electric capacity 12 and the first load 13 can be flowed through, so as to the purpose for realizing doing work；Additionally, in the first pulsactor 4 and second
Drive circuit unit 7 constitutes the path between the first public connecting end 1 and the second public connecting end 2, and in the second pulsactor 5
And the 4th drive circuit unit 9 is when constituting the path between the first public connecting end 1 and the second public connecting end 2, electric current can be with
The second electric capacity 14 and the second load 15 are flowed through, so as to the purpose for realizing doing work.Additionally, specific, the first public connecting end can be with
For the zero line of electrical network, or for the virtual zero line of electrical network.Second public connecting end is the first electric capacity and the in rectified three-phase circuit
The midpoint of two electric capacity, now can be carried out to the input current of each circuitry phase in three-phase circuit by vector control method
Control, so as to realize the rectification of the input current to three-phase circuit.
Further, referring to Fig. 2, the first drive circuit unit 6 includes the first diode 61, the second drive circuit unit 7
Including the second diode 71, and the negative pole of the positive pole of the first diode 61 and the second diode 71 with the first pulsactor 4
Second end connects；3rd drive circuit unit 8 includes the 3rd diode 81, and the 4th drive circuit unit 9 includes the 4th diode
91, and the negative pole of the positive pole and the 4th diode 91 of the 3rd diode 81 is connected with the second end of the second pulsactor 5；First
The first electric capacity 12 that the negative pole of the negative pole of diode 61 and the 3rd diode 81 is arranged in parallel and the first load 13 and the
Two public connecting ends 2 connect, the positive pole of the positive pole and the 4th diode 91 of the second diode 71 arrange in parallel second
Electric capacity 14 and the second load 15 are connected with the second public connecting end 2.So, alternating current for positive alternating current half period in
3rd process is switched to by the second process, and when the first process is switched to by the 4th process, can cause the first diode 61
Reverse current change it is consistent with the curent change in the second pulsactor 5, and so that the 3rd diode 81 reverse current
Change is consistent with the curent change in the first pulsactor 4, is enable to reduce the first diode to a great extent
With the QRR of the 3rd diode.Additionally, being cut by the second process within half period of the alternating current for negative alternating current
The 3rd process is changed to, and when the first process is switched to by the 4th process, equally enables to the reverse electricity of the second diode 71
Rheologyization is consistent with the curent change in the second pulsactor 5, and causes the reverse current change and the of the 4th diode 91
Curent change in one pulsactor 4 is consistent, is enable to reduce the first diode and the three or two to a great extent
The QRR of level pipe, to reach the power attenuation at utmost reducing rectified three-phase circuit, and reduces electromagnetic interference
Problem.
Further, with continued reference to Fig. 2, on-off circuit unit 10 includes first switch group 101 and second switch group 102,
First switch group 101 is connected between the second end of the first pulsactor 4 and the second public connecting end 2, and second switch group 102 connects
It is connected between the second end of the second pulsactor 5 and the second public connecting end 2.
So, in a cycle of the alternating current that first switch group 101 and second switch group 102 are exported in alternating current power supply,
Timesharing carries out the switching of closed and disconnected action.And by first switch group 101 and the closed and disconnected of second switch group 102
The switching of action, within half period of the alternating current for positive alternating current, the first public connecting end 1 and the second public connecting end 2 it
Between switch to path by the first pulsactor 4 and first switch group 101, logical successively for the path of positive alternating current conducting
Cross the path of the first pulsactor 4 and the first drive circuit unit 6, by the logical of the second pulsactor 5 and second switch group 102
Road, by the path of the second pulsactor 5 and the 3rd drive circuit unit 8；Within half period of the alternating current for negative alternating current,
Path between first public connecting end 1 and the second public connecting end 2 for the conducting of negative alternating current is followed successively by full by first
Path with inductance 4 and first switch group 101, the path by the first pulsactor 4 and the second drive circuit unit 7, pass through
The path of the second pulsactor 5 and second switch group 102, by the logical of the second pulsactor 5 and the 4th drive circuit unit 9
Road.
Specifically, first switch group 101 include being parallel with diode the first insulated gate bipolar transistor IGBT pipe and
The 2nd IGBT pipes of diode are parallel with, wherein the colelctor electrode of IGBT pipes is connected with the second end of the first pulsactor 4, the
The emitter stage of one IGBT pipes is connected with the emitter stage of the 2nd IGBT pipes；Second switch group 102 includes be parallel with diode the 3rd
IGBT manages and is parallel with the 4th IGBT pipes of diode, wherein the second of the colelctor electrode of the 3rd IGBT pipes and the second pulsactor 5
End connection, the emitter stage of the 3rd IGBT pipes are connected with the emitter stage of the emitter stage and the 4th IGBT pipes of the 2nd IGBT pipes respectively, the
The colelctor electrode of two IGBT pipes is connected with the second public connecting end 2 with the colelctor electrode of the 4th IGBT pipes.So so that alternating current power supply
Output current whether just flowing electricity and negative stream electricity, first switch group 101 and second switch group 102 being capable of normallies.
In the cycle period of the alternating current of the present embodiment alternating current power supply output, on-off circuit cell operation is enabled in zero
Electric current opening state, so that the turn-on consumption of on-off circuit unit is zero, and enables to the reverse current in diode
Change is consistent with the curent change in pulsactor, so as to reduce the QRR of diode to a great extent,
So as to reduce the power attenuation of rectified three-phase circuit, and electromagnetic interference is reduced, solves traditional commutator operationally,
Due to device for power switching, device for power switching switching loss is larger caused by the hard switching state, and diode with compared with
The problem of big QRR.
Second embodiment：
The present embodiment provides a kind of drive control method of rectified three-phase circuit, and it is real that the drive control method is applied to first
The rectified three-phase circuit in example is applied, the drive control method includes：
Within the half period that alternating current is positive alternating current, the first control signal is exported to on-off circuit unit successively, made
On-off circuit unit is turned on, and constitutes that to connect the first public connecting end public with second between the first pulsactor and on-off circuit unit
The path of common connection end；The second control signal is exported to on-off circuit unit, disconnects on-off circuit unit, the first pulsactor
The path for connecting the first public connecting end and the second public connecting end is constituted between the first drive circuit unit；To on-off circuit
Unit exports the 3rd control signal, turns on on-off circuit unit, the company of composition between the second pulsactor and on-off circuit unit
The path of logical first public connecting end and the second public connecting end；The 4th control signal is exported to on-off circuit unit, switch is made
Circuit unit disconnects, and constitutes that to connect the first public connecting end public with second between the second pulsactor and the 3rd drive circuit unit
The path of common connection end；
Within half period of the alternating current for negative sense alternating current, the 5th control signal is exported to on-off circuit unit successively, made
On-off circuit unit is turned on, and constitutes that to connect the first public connecting end public with second between the first pulsactor and on-off circuit unit
The path of common connection end；The 6th control signal is exported to on-off circuit unit, disconnects on-off circuit unit, the first pulsactor
The path for connecting the first public connecting end and the second public connecting end is constituted between the second drive circuit unit；To on-off circuit
Unit exports the 7th control signal, turns on on-off circuit unit, the company of composition between the second pulsactor and on-off circuit unit
The path of logical first public connecting end and the second public connecting end；The 8th control signal is exported to on-off circuit unit, switch is made
Circuit unit disconnects, and constitutes that to connect the first public connecting end public with second between the second pulsactor and the 4th drive circuit unit
The path of common connection end.
When so, within the half period that alternating current is positive alternating current, when to on-off circuit unit output the first control letter
Number when, on-off circuit unit conducting and between the first pulsactor and on-off circuit unit constitute connect the first public connecting end and
The path of the second public connecting end, this causes on-off circuit unit during conducting, it is possible to use pulsactor has just
Beginning inductance value and when the electric current for flowing through pulsactor reaches certain value, impedance of the pulsactor to electric current drops to zero spy
Property so that the electric current for flowing through the first pulsactor can not be undergone mutation, so that on-off circuit unit electric current in conducting is several
It is zero, this causes on-off circuit cell operation in zero current turning-on state, realizes the soft open-minded of on-off circuit unit, so as to
So that the turn-on consumption of on-off circuit unit is zero.When the second control signal is exported to on-off circuit unit, on-off circuit list
Unit disconnects and constitutes between the first pulsactor and the first drive circuit unit and connects the first public connecting end and the second public company
Connect the path at end, now due to on-off circuit unit export the first control signal when, resistance of first pulsactor to electric current
It is anti-to drop to zero, therefore farthest can reduce disappearing on the path that the first pulsactor is constituted with the first drive circuit unit
The power of consumption.When to on-off circuit unit export three control signals when, on-off circuit unit conducting and the second pulsactor with
The path of the first public connecting end of connection and the second public connecting end is constituted between on-off circuit unit, this causes on-off circuit list
Unit is during conducting, it is possible to use pulsactor has initial inductance amount and when the electric current for flowing through pulsactor reaches necessarily
During value, impedance of the pulsactor to electric current drops to zero characteristic so that the electric current for flowing through the second pulsactor can not be dashed forward
Become, so that on-off circuit unit electric current in conducting is almost nil, this causes on-off circuit cell operation to open in zero current
Logical state, realizes the soft open-minded of on-off circuit unit, so that the turn-on consumption of on-off circuit unit is zero, if additionally,
Now the first drive circuit unit is diode, then while the electric current for flowing through the second pulsactor can not be undergone mutation, stream
The reverse current of Jing diodes can not equally be undergone mutation, so that the reverse current change and the second saturation in diode
Curent change in inductance is consistent, so reduces the QRR of diode to a great extent, so as to reduce
The power attenuation of rectified three-phase circuit.When to on-off circuit unit export four control signals when, on-off circuit unit disconnect and
Constitute between second pulsactor and the 3rd drive circuit unit and connect leading to for the first public connecting end and the second public connecting end
Road, now due to when three control signals is exported to on-off circuit unit, declining to the impedance of electric current in the second pulsactor
Be zero, thus when the second pulsactor and the 3rd drive circuit unit constitute the first public connecting end and the second public connecting end it
Between path when, can farthest reduce the power consumed on turning circuit.
Here it should be noted that alternating current for negative sense alternating current half period in when, current lead-through principle with exchange
Current lead-through principle when electricity is in the half period of above-mentioned positive alternating current, here are no longer illustrated.So, in exchange
In the cycle period of the alternating current of power supply output, on-off circuit cell operation is enabled in zero current turning-on state, so that
The turn-on consumption for obtaining on-off circuit unit is zero, and enables to the change of the reverse current in diode and the electricity in pulsactor
Rheologyization is consistent, so as to reduce the QRR of diode to a great extent, so as to reduce three phase rectifier electricity
The power attenuation on road, solves traditional commutator operationally, as device for power switching is caused by hard switching state
Device for power switching switching loss is larger, and diode has the problem of larger QRR.
Specifically, drive rectified three-phase circuit when, can with alternating current as within the half period of positive alternating current, successively
The first control signal is exported to first switch group, turns on first switch group, structure between the first pulsactor and first switch group
Into the path for connecting first public connecting end and second public connecting end；To first switch group output the second control letter
Number, disconnect second switch group, constitute between the first pulsactor and the first drive circuit unit and connect the described first public company
Connect the path held with second public connecting end；The 3rd control signal is exported to second switch group, turns on the 3rd switches set,
Constitute between second pulsactor and second switch group first public connecting end is connected with second public connecting end
Path；The 4th control signal is exported to second switch group, the disconnection of second switch group, the second pulsactor and the 3rd drive circuit is made
The path of connection first public connecting end and second public connecting end is constituted between unit；
Within half period of the alternating current for negative sense alternating current, the 5th control signal is exported to the first switch group successively,
First switch group unit conducting is made, between the first pulsactor and the first switch group, constitutes that to connect described first public
The path of connection end and second public connecting end；The 6th control signal is exported to the first switch group, described first is made
Switches set disconnect, between the first pulsactor and second drive circuit unit constitute connect first public connecting end and
The path of second public connecting end；The 7th control signal is exported to the second switch group, the on-off circuit unit is made
Conducting, constitutes between the second pulsactor and the second switch group that to connect first public connecting end public with described second
The path of connection end；The 8th control signal is exported to the second switch group, disconnects the second switch group, the second saturation electricity
Sense connects first public connecting end with second public connecting end with constituting between the 4th drive circuit unit
Path.
So, by the conducting and disconnection and the conducting and disconnection of second switch group of control first switch group respectively, control
Make the conduction path between the first public connecting end and the second public connecting end so that control is more accurate, and cause first to open
Pass group and second switch group may operate in zero current turning-on state, so that first switch group and second switch group are opened
Logical loss is zero, and enable to the reverse current in diode change it is consistent with the curent change in pulsactor, so as to
The QRR of diode is reduced to a great extent, traditional commutator is solved operationally, as power is opened
Close device larger in device for power switching switching loss caused by hard switching state, and diode has larger Reverse recovery
The problem of electric charge.
Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary person of the art comes
Say, some improvements and modifications can also be made under the premise of without departing from principle of the present invention, and these improvements and modifications also exist
In protection scope of the present invention.
Claims (8)
1. a kind of rectified three-phase circuit, the rectified three-phase circuit include the first public connecting end, the second public connecting end and point
The three-phase circuit not being connected between first public connecting end and second public connecting end, it is characterised in that three-phase
Each circuitry phase in circuit includes：
Alternating current power supply；
The of first pulsactor and the second pulsactor, the first end of first pulsactor and second pulsactor
One end is connected with the alternating current power supply；
First drive circuit unit and the second drive circuit unit, the first end of first drive circuit unit and second drive
The first end of circuit unit is connected with the second end of first pulsactor, and the second of first drive circuit unit
Second end of end and the second drive circuit unit is connected with the second public connecting end；
3rd drive circuit unit and the 4th drive circuit unit, the first end of the 3rd drive circuit unit and the 4th drive
The first end of circuit unit is connected with the second end of second pulsactor, and the second of the 3rd drive circuit unit
Second end of end and the 4th drive circuit unit is connected with the second public connecting end；
On-off circuit unit, second end and described second of the first end of the on-off circuit unit and first pulsactor
Terminals after second end of pulsactor is connected connect, and the second end of the on-off circuit unit and the second public connecting end
Connection；Wherein,
In a cycle of the alternating current that the on-off circuit unit is exported in the alternating current power supply, timesharing carries out closed and disconnected
The switching of action；By the switching of the closed and disconnected action of the on-off circuit unit, it is positive cross streams in the alternating current
In the half period of electricity, the path for being used for the conducting of positive alternating current between the first public connecting end and the second public connecting end is cut successively
Be changed to path by the first pulsactor and on-off circuit unit, by the first pulsactor and the first drive circuit unit
Path, the path by the second pulsactor and on-off circuit unit, by the second pulsactor and the 3rd drive circuit unit
Path；Within half period of the alternating current for negative alternating current, between the first public connecting end and the second public connecting end
Path for the conducting of negative alternating current is followed successively by the path by the first pulsactor and on-off circuit unit, satisfies by first
Path with inductance and the second drive circuit unit, the path by the second pulsactor and on-off circuit unit, by second
The path of pulsactor and the 4th drive circuit unit.
2. rectified three-phase circuit according to claim 1, it is characterised in that each circuitry phase also includes filtered electrical
The first end of sense, the first end of first pulsactor and second pulsactor is by the filter inductance and the friendship
Stream power supply connects, and the alternating current power supply of each circuitry phase is connected with first public connecting end.
3. rectified three-phase circuit according to claim 1, it is characterised in that the first drive circuit of each circuitry phase
The first electric capacity and the first load and institute that second end of unit and the second end of the 3rd drive circuit unit are arranged in parallel
State the connection of the second public connecting end, and the second end and the 4th drive circuit unit of the second drive circuit unit of each circuitry phase
The second electric capacity for arranging in parallel of the second end and the second load be connected with second public connecting end.
4. rectified three-phase circuit according to claim 1, it is characterised in that first drive circuit unit includes first
Diode, second drive circuit unit include the second diode, and the positive pole of first diode and the described 2nd 2
The negative pole of level pipe is connected with the second end of first pulsactor；3rd drive circuit unit includes the three or two grade
Pipe, the 4th drive circuit unit include the 4th diode, and the positive pole and the 4th diode of the 3rd diode
Negative pole be connected with the second end of second pulsactor；The negative pole of the negative pole of the first diode and the 3rd diode leads to
Cross the first electric capacity for being arranged in parallel and the first load is connected with the second public connecting end, the positive pole of the second diode and the four or two pole
The second electric capacity and the second load that the positive pole of pipe is arranged in parallel is connected with the second public connecting end.
5. rectified three-phase circuit according to claim 1, it is characterised in that the on-off circuit unit includes first switch
Group and second switch group, the first switch group be connected to the second end of first pulsactor and the second public connecting end it
Between, the second switch group is connected between the second end of second pulsactor and the second public connecting end.
6. rectified three-phase circuit according to claim 5, it is characterised in that the first switch group includes being parallel with two poles
First insulated gate bipolar transistor IGBT pipe of pipe and the 2nd IGBT pipes for being parallel with diode, wherein the collection of IGBT pipes
Electrode is connected with the second end of first pulsactor, and the emitter stage of IGBT pipes and the 2nd IGBT pipes are sent out
Emitter-base bandgap grading connects；The second switch group includes the 3rd IGBT pipes for being parallel with diode and the 4th IGBT for being parallel with diode
Pipe, wherein the colelctor electrode of the 3rd IGBT pipes is connected with the second end of second pulsactor, the 3rd IGBT pipes
Emitter stage is connected with the emitter stage of the emitter stage and the 4th IGBT pipes of the 2nd IGBT pipes respectively, the 2nd IGBT pipes
Colelctor electrode be connected with second public connecting end with the colelctor electrode of the 4th IGBT pipes.
7. a kind of drive control method of rectified three-phase circuit, the three-phase being applied to as any one of claim 1 to 6 are whole
Current circuit, it is characterised in that the drive control method includes：
Within the half period that alternating current is positive alternating current, the first control signal is exported to the on-off circuit unit successively, made
The on-off circuit unit conducting, constitutes between the first pulsactor and the on-off circuit unit and connects the described first public company
Connect the path held with second public connecting end；The second control signal is exported to the on-off circuit unit, the switch is made
Circuit unit disconnects, and constitutes and connect first public connecting end between the first pulsactor and first drive circuit unit
With the path of second public connecting end；The 3rd control signal is exported to the on-off circuit unit, the on-off circuit is made
Unit is turned on, and constitutes and connect first public connecting end with described the between the second pulsactor and the on-off circuit unit
The path of two public connecting ends；The 4th control signal is exported to the on-off circuit unit, disconnects the on-off circuit unit,
Constitute between second pulsactor and the 3rd drive circuit unit that to connect first public connecting end public with described second
The path of common connection end；
Within half period of the alternating current for negative sense alternating current, the 5th control signal is exported to the on-off circuit unit successively, made
The on-off circuit unit conducting, constitutes between the first pulsactor and the on-off circuit unit and connects the described first public company
Connect the path held with second public connecting end；The 6th control signal is exported to the on-off circuit unit, the switch is made
Circuit unit disconnects, and constitutes and connect first public connecting end between the first pulsactor and second drive circuit unit
With the path of second public connecting end；The 7th control signal is exported to the on-off circuit unit, the on-off circuit is made
Unit is turned on, and constitutes and connect first public connecting end with described the between the second pulsactor and the on-off circuit unit
The path of two public connecting ends；The 8th control signal is exported to the on-off circuit unit, disconnects the on-off circuit unit,
Constitute between second pulsactor and the 4th drive circuit unit that to connect first public connecting end public with described second
The path of common connection end.
8. drive control method according to claim 7, it is characterised in that the drive control method also includes：
Within the half period that alternating current is positive alternating current, the first control signal is exported to first switch group successively, make first to open
The conducting of pass group, constitutes between the first pulsactor and first switch group that to connect first public connecting end public with described second
The path of connection end；The second control signal is exported to first switch group, disconnects second switch group, the first pulsactor and first
The path of connection first public connecting end and second public connecting end is constituted between drive circuit unit；Open to second
Pass group exports the 3rd control signal, turns on the 3rd switches set, constitutes and connect institute between the second pulsactor and second switch group
State the path of the first public connecting end and second public connecting end；The 4th control signal is exported to second switch group, the is made
Two switches set disconnect, and constitute and connect first public connecting end and institute between the second pulsactor and the 3rd drive circuit unit
State the path of the second public connecting end；
Within half period of the alternating current for negative sense alternating current, the 5th control signal is exported to the first switch group successively, make institute
The conducting of first switch group unit is stated, between the first pulsactor and the first switch group, constitutes that to connect described first commonly connected
Hold the path with second public connecting end；The 6th control signal is exported to the first switch group, the first switch is made
Group disconnect, between the first pulsactor and second drive circuit unit constitute connect first public connecting end with it is described
The path of the second public connecting end；The 7th control signal is exported to the second switch group, the on-off circuit unit conducting is made,
Constitute between second pulsactor and the second switch group that to connect first public connecting end commonly connected with described second
The path at end；The 8th control signal is exported to the second switch group, disconnects the second switch group, the second pulsactor with
The path of connection first public connecting end and second public connecting end is constituted between 4th drive circuit unit.
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| CN201710007016.9A CN106533218B (en) | 2017-01-05 | 2017-01-05 | A kind of rectified three-phase circuit and drive control method |
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| CN201710007016.9A CN106533218B (en) | 2017-01-05 | 2017-01-05 | A kind of rectified three-phase circuit and drive control method |
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| CN106533218B CN106533218B (en) | 2019-02-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022068566A1 (en) * | 2020-09-30 | 2022-04-07 | 重庆美的制冷设备有限公司 | Electronic circuit and air conditioner |
| WO2022227972A1 (en) * | 2021-04-26 | 2022-11-03 | 佛山市顺德区美的电子科技有限公司 | Voltage control method and apparatus, household appliance, computer storage medium, and computer program |
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| CN1933313A (en) * | 2005-09-16 | 2007-03-21 | 鸿富锦精密工业（深圳）有限公司 | Self-driving synchronous rectification and voltage-stabilizing circuit |
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| US4794507A (en) * | 1987-04-03 | 1988-12-27 | Doble Engineering Company | Controlling electrical power |
| CN1933313A (en) * | 2005-09-16 | 2007-03-21 | 鸿富锦精密工业（深圳）有限公司 | Self-driving synchronous rectification and voltage-stabilizing circuit |
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| WO2022068566A1 (en) * | 2020-09-30 | 2022-04-07 | 重庆美的制冷设备有限公司 | Electronic circuit and air conditioner |
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| WO2022227972A1 (en) * | 2021-04-26 | 2022-11-03 | 佛山市顺德区美的电子科技有限公司 | Voltage control method and apparatus, household appliance, computer storage medium, and computer program |
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| CN106533218B (en) | 2019-02-01 |
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