CN102842954B - A kind of dual power automatic transfer switching equipment of to and fro flow of power - Google Patents
A kind of dual power automatic transfer switching equipment of to and fro flow of power Download PDFInfo
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- CN102842954B CN102842954B CN201210293383.7A CN201210293383A CN102842954B CN 102842954 B CN102842954 B CN 102842954B CN 201210293383 A CN201210293383 A CN 201210293383A CN 102842954 B CN102842954 B CN 102842954B
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- 230000003068 static effect Effects 0.000 claims abstract description 163
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- 230000002457 bidirectional effect Effects 0.000 description 2
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Abstract
The invention discloses a kind of dual power automatic transfer switching equipment; Comprise the first mechanical switch, the first static switch, the second mechanical switch and the second static switch; One end of first static switch is connected to the positive pole of the first outside DC power supply, and the other end is connected to the positive pole of outside load; First mechanical switch and the first static switch are connected in parallel; One end of second static switch is connected to the positive pole of the second outside DC power supply, and the other end is connected to the positive pole of load; The negative pole of negative pole and the second DC power supply that the second mechanical switch and the second static switch are connected in parallel the first DC power supply is connected to the negative pole of load.In the present invention, static switch and mechanical switch are connected in parallel alternation: by mechanical switch work conducting during stable state, when changing, static switch action, and its switching time, can fast conducting load current much smaller than the intrinsic closing time of mechanical switch.
Description
Technical field
The invention belongs to automatic change-over technical field, more specifically, relate to a kind of dual power automatic transfer switching equipment be applied in the DC distribution net of to and fro flow of power.
Background technology
Along with national economy and scientific and technical development, the requirement of user to power supply reliability is more and more harsher.In order to improve power supply reliability, large size industrial enterprise inside is often provided with stand-by power supply or stand-by generator.When a road power failure, utilize automatic change-over can realize switching between conventional power supply and stand-by power supply, to ensure power supply reliability.
Present DC distribution net development rapidly, has had corresponding demand to automatic change-over.Existing automatic change-over is generally mechanical type automatic change-over for AC distribution net and Static Transfer Switch.Wherein mechanical type automatic change-over is owing to being mechanical structure, so change-over time is long.And the change-over time of Static Transfer Switch is short, but there is the large problem of stable state conduction loss.And along with the appearance of the systems such as microgrid, the power of direct current system may two-way flow, so also require that dual power automatic transfer switching equipment can two-way admittance.
Summary of the invention
For the defect of prior art, the object of the present invention is to provide a kind of dual power automatic transfer switching equipment of to and fro flow of power, be intended to solve the problem that existing automatic change-over change-over time is long, loss is large.
For achieving the above object, the invention provides a kind of dual power automatic transfer switching equipment of to and fro flow of power, comprise the first mechanical switch, the first static switch, the second mechanical switch and the second static switch; One end of described first static switch is connected with the positive pole of the first outside DC power supply, and the other end is connected with the positive pole of outside load; Described first mechanical switch and described first static switch are connected in parallel; One end of described second static switch is connected with the positive pole of the second outside DC power supply, and the other end is connected with the positive pole of outside load; Described second mechanical switch and described second static switch are connected in parallel; The negative pole of described first DC power supply and the negative pole of the second DC power supply are connected to the negative pole of outside load.
Further, described switching device also comprises: the 3rd mechanical switch, the 3rd static switch, the 4th mechanical switch and the 4th static switch; One end of described 3rd static switch is connected to the negative pole of described first DC power supply, and the other end is connected to the negative pole of described load; Described 3rd mechanical switch and described 3rd static switch are connected in parallel; One end of described 4th static switch is connected to the negative pole of described second DC power supply, and the other end is connected to the negative pole of outside load; Described 4th mechanical switch and described 4th static switch are connected in parallel.
Further, described switching device also comprises the first diode and inductance; The negative electrode of described first diode is connected with the other end of described second static switch and the other end of described first static switch respectively; The anode of described first diode is connected to the negative pole of load; One end of described inductance is connected with the negative electrode of described first diode, and the other end of described inductance is connected to the positive pole of described load.
Further, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the first switching tube, second switch pipe and the first resistance; The first end of described first switching tube is as one end of described static switch, second end of described first switching tube is connected with the second end of described second switch pipe, and the control end of described first switching tube is according to the conducting between the first end of described first switching tube of control signal control of outside and the second end; The first end of described second switch pipe is as the other end of described static switch, and the control end of described second switch pipe controls the conducting between the first end of described second switch pipe and the second end according to the control signal of outside; Anti-reverse diode is connected between the first end of described first switching tube and the second end; Anti-reverse diode is connected between the first end of described second switch pipe and the second end; One end of described first resistance is connected to the first end of described first switching tube, and the other end of described first resistance is connected to the first end of described second switch pipe.
Further, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 3rd switching tube, the 4th switching tube, the second diode and the 3rd diode; The first end of described 3rd switching tube is connected to the negative electrode of described second diode; Second end of described 4th switching tube is connected to the anode of described 3rd diode; As one end of described static switch after the negative electrode of one end of described second resistance and the anode of described second diode and described 3rd diode is connected; As the other end of described static switch after the first end of the other end of described second resistance and the second end of described 3rd switching tube and described 4th switching tube is connected; The control end of described 3rd switching tube is according to the conducting between the first end of described 3rd switching tube of control signal control of outside and the second end; The control end of described 4th switching tube is according to the conducting between the first end of described 4th switching tube of control signal control of outside and the second end; Anti-reverse diode is connected between the first end of described 3rd switching tube and the second end; Anti-reverse diode is connected between the first end of described 4th switching tube and the second end.
Further, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 5th switching tube, the 6th switching tube, the 4th diode and the 5th diode; As one end of described static switch after the first end of described 5th switching tube is connected with the negative electrode of described 4th diode, second end of described 5th switching tube is connected to the anode of described 5th diode, and the control end of described 5th switching tube is according to the conducting between the first end of described 5th switching tube of control signal control of outside and the second end; As the other end of described static switch after the first end of described 6th switching tube is connected with the negative electrode of described 5th diode, second end of described 6th switching tube is connected to the anode of described 4th diode, and the control end of described 6th switching tube is according to the conducting between the first end of described 6th switching tube of control signal control of outside and the second end; Second end of described 5th switching tube is also connected with the anode of described 4th diode, and the anode of described 5th diode is also connected with the second end of described 6th switching tube.
Further, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 7th switching tube, the 8th switching tube, the 6th diode and the 7th diode; As one end of static switch after the first end of described 7th switching tube is connected with the anode of the 6th diode, second end of described 7th switching tube is connected to the negative electrode of the 7th diode, and the control end of described 7th switching tube controls the conducting between its first end and the second end according to the control signal of outside; As the other end of static switch after the first end of described 8th switching tube is connected with the anode of the 7th diode, second end of described 8th switching tube is connected to the negative electrode of described 6th diode, and the control end of described 8th switching tube controls the conducting between its first end and the second end according to the control signal of outside; Second end of described 7th switching tube is also connected with the negative electrode of described 6th diode, and the negative electrode of described 7th diode is also connected with the second end of described 8th switching tube.
Further, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 9th switching tube, the 8th diode, the 9th diode, the tenth diode and the 11 diode; As one end of described static switch after the anode of described 8th diode is connected with the negative electrode of described 9th diode, as the other end of described static switch after the anode of described tenth diode is connected with the negative electrode of described 11 diode; Second end of described 9th switching tube is connected with the anode of described 9th diode and the anode of described 11 diode, the first end of described 9th switching tube is connected with the negative electrode of the negative electrode of described 8th diode and described tenth diode, and the control end of described 9th switching tube is according to the conducting between the first end of described 9th switching tube of control signal control of outside and the second end.
Further, described first switching tube, second switch pipe, the 3rd switching tube, the 4th switching tube, the 5th switching tube, the 6th switching tube are identical with the 9th switching tube structure, and each switching tube is gate level turn-off thyristor, power transistor, power field effect transistor or igbt.
In the present invention, static switch and mechanical switch adopt parallel-connection structure, alternation: by mechanical switch work conducting during stable state, the conducting resistance of mechanical contact is little, and therefore to flow through heating of contact amount very little for big current, do not need extra heat abstractor; When changing, static switch action, its switching time, can fast conducting load current much smaller than the intrinsic closing time of mechanical switch.
Accompanying drawing explanation
The modular structure schematic diagram of the dual power automatic transfer switching equipment of the to and fro flow of power based on voltage-source type that Fig. 1 provides for first embodiment of the invention;
The modular structure schematic diagram of the dual power automatic transfer switching equipment of the to and fro flow of power based on voltage-source type that Fig. 2 provides for second embodiment of the invention;
The modular structure schematic diagram of the dual power automatic transfer switching equipment of the to and fro flow of power based on current source type that Fig. 3 provides for third embodiment of the invention;
The modular structure schematic diagram of the dual power automatic transfer switching equipment of the to and fro flow of power based on current source type that Fig. 4 provides for fourth embodiment of the invention;
Fig. 5 is the physical circuit figure of the first embodiment of static switch;
Fig. 6 is the physical circuit figure of the second embodiment of static switch;
Fig. 7 is the physical circuit figure of the 3rd embodiment of static switch;
Fig. 8 is the physical circuit figure of the 4th embodiment of static switch;
Fig. 9 is the physical circuit figure of the 5th embodiment of static switch.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention meets the demand of DC distribution network users, proposing a kind of power can two-way flow, more easily realize, simple and reliable, adopt the dual power automatic transfer switching equipment of full control device and mechanical switch parallel-connection structure, be applicable to the DC distribution net of to and fro flow of power, thus meet the demand of the DC distribution network users of to and fro flow of power.
Fig. 1 shows the modular structure of the dual power automatic transfer switching equipment of the to and fro flow of power based on voltage-source type that first embodiment of the invention provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows:
The dual power automatic transfer switching equipment be connected between outside DC power supply (10,20) and external loading 30 comprises: the first mechanical switch 1, first static switch 2, second mechanical switch 3 and the second static switch 4; Wherein, one end of the first static switch 2 is connected to the positive pole of the first DC power supply 10, and the other end is connected to the positive pole of outside load 30; First mechanical switch 1 and the first static switch 2 are connected in parallel; One end of second static switch 4 is connected to the positive pole of the second DC power supply 20, and the other end is connected to the positive pole of outside load 30; Second mechanical switch 3 and the second static switch 4 are connected in parallel; The negative pole of the first DC power supply 10 and the negative pole of the second DC power supply 20 are connected to the negative pole of outside load 30.
In embodiments of the present invention, static switch is bidirectional switch.Suppose that load 30 is current to be powered by the first DC power supply 10, if detect abnormity of power supply, start conversion; First the first mechanical switch 1 separating brake order of the first DC power supply 10 is sent; After the first mechanical switch 1 separating brake of the first DC power supply 10, send out the second static switch 4 drive singal of the second DC power supply 20, make its conducting, send out the second DC power supply 20 second mechanical switch 3 combined floodgate order simultaneously; The drive singal that the second DC power supply 20 second static switch 4 turns off is sent after the second mechanical switch 3 of the second DC power supply 20 closes a floodgate; Load 30 is connected with the second DC power supply 20, converts.
Fig. 2 shows the modular structure of the dual power automatic transfer switching equipment of the to and fro flow of power based on voltage-source type that second embodiment of the invention provides; The basis of Fig. 1 adds the 3rd mechanical switch 5, the 3rd static switch 6, the 4th mechanical switch 7 and the 4th static switch 8; Wherein, one end of the 3rd static switch 6 is connected to the negative pole of the first DC power supply 10, and the other end is connected to the negative pole of outside load 30; 3rd mechanical switch 5 is connected in parallel with described 3rd static switch 6; One end of 4th static switch 8 is connected to the negative pole of described second DC power supply, and the other end is connected to the negative pole of outside load 30; 4th mechanical switch 7 is connected in parallel with described 4th static switch 8.Compared to Figure 1, the circuit structure shown in Fig. 2 is all connected with mechanical switch and static switch at the both positive and negative polarity of the first DC power supply 10 and the second DC power supply 20; Adopt the circuit of this kind of structure more reliable.
Fig. 3 shows the modular structure of the dual power automatic transfer switching equipment of the to and fro flow of power based on current source type that third embodiment of the invention provides, and the basis of Fig. 1 adds the first diode D1 and inductance L 1; The negative electrode of the first diode D1 is connected with the other end of the second static switch 4 and the other end of the first static switch 2 respectively; The anode of the first diode D1 is connected to the negative pole of load 30; One end of described inductance L 1 is connected with the negative electrode of described first diode D1, and the other end of inductance L 1 is connected to the positive pole of outside load 30.Wherein, inductance L 1 has the effect of stabilizing output current, and the first diode D1 has the effect of protection.
Fig. 4 shows the modular structure of the dual power automatic transfer switching equipment of the to and fro flow of power based on current source type that fourth embodiment of the invention provides, and the basis of Fig. 2 adds the first diode D1 and inductance L 1; Concrete annexation is identical with Fig. 3, does not repeat them here.
In embodiments of the present invention, the specific implementation circuit of the first static switch 2, second static switch 4, the 3rd static switch 6 and the 4th static switch 8 has a variety of; Include multiple switching tube in the specific implementation circuit of static switch, wherein this switching tube can be gate level turn-off thyristor (GTO), power transistor (GTR), power field effect transistor (Power MOSFET) or igbt (IGBT); For convenience of explanation, details are as follows for insulated gate bipolar translator power tube IGBT for the embodiment of the present invention:
Fig. 5 shows the physical circuit of the first embodiment of static switch, and static switch comprises: IGBT power tube Q1, IGBT power tube Q2 and the first resistance R1; The collector electrode of IGBT power tube Q1 is as one end of static switch, and the gate pole of IGBT power tube Q1 receives outside control signal; The emitter of IGBT power tube Q2 is connected with the emitter of IGBT power tube Q1, and the collector electrode of IGBT power tube Q2 is as the other end of static switch, and the gate pole of IGBT power tube Q2 receives outside control signal; Anti-reverse diode is all connected between the collector and emitter of IGBT power tube Q1 and IGBT power tube Q2; One end of first resistance R1 is connected to the collector electrode of IGBT power tube Q1, and the other end of the first resistance R1 is connected to the collector electrode of IGBT power tube Q2.
Fig. 6 shows the physical circuit of the second embodiment of static switch; Static switch comprises: IGBT power tube Q3, IGBT power tube Q4, the second diode D2 and the 3rd diode D3; The collector electrode of IGBT power tube Q3 is connected to the negative electrode of the second diode D2, and the gate pole of IGBT power tube Q3 receives outside control signal; The emitter of IGBT power tube Q4 is connected to the anode of the 3rd diode D3, and the gate pole of IGBT power tube Q4 receives outside control signal; As one end of static switch after the negative electrode of one end of the second resistance R2 and the anode of the second diode D2 and the 3rd diode D3 is connected; As the other end of static switch after the collector electrode of the other end of the second resistance R2 and the emitter of IGBT power tube Q3 and IGBT power tube Q4; Anti-reverse diode is connected between the collector and emitter of IGBT power tube Q3 and IGBT power tube Q4.
Fig. 7 shows the physical circuit figure of the 3rd embodiment of static switch; Static switch comprises: IGBT power tube Q5, IGBT power tube Q6, the 4th diode D4 and the 5th diode D5; As one end of static switch after the collector electrode of IGBT power tube Q5 is connected with the negative electrode of the 4th diode D4, the emitter of IGBT power tube Q5 is connected to the anode of the 5th diode D5, and the gate pole of IGBT power tube Q5 connects outside control signal; As the other end of static switch after the collector electrode of IGBT power tube Q6 is connected with the negative electrode of the 5th diode D5, the emitter of IGBT power tube Q6 is connected to the anode of the 4th diode D4, and the gate pole of IGBT power tube Q6 connects outside control signal; The emitter of IGBT power tube Q5 is also connected with the anode of the 4th diode D4, and the anode of the 5th diode D5 is also connected with the emitter of IGBT power tube Q6.
Fig. 8 shows the physical circuit of the 4th embodiment of static switch; Static switch comprises: IGBT power tube Q7, IGBT power tube Q8, the 6th diode D6 and the 7th diode D7; As one end of static switch after the emitter of IGBT power tube Q7 is connected with the anode of the 6th diode D6, the collector electrode of IGBT power tube Q7 is connected to the negative electrode of the 7th diode D7, and the gate pole of IGBT power tube Q7 connects outside control signal; As the other end of static switch after the emitter of IGBT power tube Q8 is connected with the anode of the 7th diode D7, the collector electrode of IGBT power tube Q8 is connected to the negative electrode of the 6th diode D6, and the gate pole of IGBT power tube Q8 connects outside control signal; The collector electrode of IGBT power tube Q7 is also connected with the negative electrode of the 6th diode D6, and the negative electrode of the 7th diode D7 is also connected with the collector electrode of IGBT power tube Q8.
Fig. 9 shows the physical circuit of the 5th embodiment of static switch; Static switch comprises: IGBT power tube Q9, the 8th diode D8, the 9th diode D9, the tenth diode D10 and the 11 diode D11; As one end of static switch after the anode of the 8th diode D8 is connected with the negative electrode of the 9th diode D9, as the other end of static switch after the anode of the tenth diode D10 is connected with the negative electrode of the 11 diode D11; The emitter of IGBT power tube Q9 is connected with the anode of the 9th diode D9 and the anode of the 11 diode D11, the collector electrode of IGBT power tube Q9 is connected with the negative electrode of the negative electrode of the 8th diode D8 and the tenth diode D10, and the gate pole of IGBT power tube Q9 connects outside control signal.
In embodiments of the present invention, first resistance R1 and the second resistance R2 is nonlinear resistance, static switch is wholly-controled device, specifically can adopt gate level turn-off thyristor (GTO), power transistor (GTR), power field effect transistor (Power MOSFET) and igbt (IGBT) etc., this wholly-controled device and diodes in parallel, diode shields; Mechanical switch all adopts DC switch.
Adopt based on the bidirectional switch of the wholly-controled device structure in parallel with mechanical switch, in electrical source exchange process, the action feature fast of wholly-controled device can be utilized, effectively can shorten switching time.And owing to have employed direct current mechanical switch and full-control type static switch, device can be applied to DC distribution net.Because the full-control type static switch of device is two-way admittance, so device can be applied to the DC distribution net of to and fro flow of power.
In switching device provided by the invention, static switch and mechanical switch adopt parallel-connection structure, alternation: by mechanical switch work conducting during stable state, the conducting resistance of mechanical contact is little, and therefore to flow through heating of contact amount very little for big current, do not need extra heat abstractor; When changing, static switch action, its switching time, can fast conducting load current much smaller than the intrinsic closing time of mechanical switch.Dual-power automatic switching device can two-way admittance, can be used in the DC distribution net of to and fro flow of power, can be used in the DC distribution net of one-way flow, can also be used in AC distribution net.Major loop can coating-forming voltage source type and current source type circuit according to the change of structure.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a dual power automatic transfer switching equipment for and fro flow of power, is characterized in that, comprises the first mechanical switch, the first static switch, the second mechanical switch and the second static switch;
One end of described first static switch is connected with the positive pole of the first outside DC power supply, and the other end is connected with the positive pole of outside load; Described first mechanical switch and described first static switch are connected in parallel;
One end of described second static switch is connected with the positive pole of the second outside DC power supply, and the other end is connected with the positive pole of described load; Described second mechanical switch and described second static switch are connected in parallel;
The negative pole of described first DC power supply and the negative pole of the second DC power supply are connected to the negative pole of described load;
Described switching device also comprises:
3rd mechanical switch, the 3rd static switch, the 4th mechanical switch and the 4th static switch;
One end of described 3rd static switch is connected to the negative pole of described first DC power supply, and the other end is connected to the negative pole of described load; Described 3rd mechanical switch and described 3rd static switch are connected in parallel;
One end of described 4th static switch is connected to the negative pole of described second DC power supply, and the other end is connected to the negative pole of outside load; Described 4th mechanical switch and described 4th static switch are connected in parallel.
2. switching device as claimed in claim 1, it is characterized in that, described switching device also comprises the first diode and inductance;
The negative electrode of described first diode is connected with the other end of described second static switch and the other end of described first static switch respectively; The anode of described first diode is connected to the negative pole of load;
One end of described inductance is connected with the negative electrode of described first diode, and the other end of described inductance is connected to the positive pole of described load.
3. switching device as claimed in claim 1, it is characterized in that, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the first switching tube, second switch pipe and the first resistance;
The first end of described first switching tube is as one end of described static switch, second end of described first switching tube is connected with the second end of described second switch pipe, and the control end of described first switching tube is according to the conducting between the first end of described first switching tube of control signal control of outside and the second end;
The first end of described second switch pipe is as the other end of described static switch, and the control end of described second switch pipe controls the conducting between the first end of described second switch pipe and the second end according to the control signal of outside;
Anti-reverse diode is connected between the first end of described first switching tube and the second end; Anti-reverse diode is connected between the first end of described second switch pipe and the second end;
One end of described first resistance is connected to the first end of described first switching tube, and the other end of described first resistance is connected to the first end of described second switch pipe.
4. switching device as claimed in claim 1, it is characterized in that, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 3rd switching tube, the 4th switching tube, the second diode, the 3rd diode and the second resistance;
The first end of described 3rd switching tube is connected to the negative electrode of described second diode;
Second end of described 4th switching tube is connected to the anode of described 3rd diode;
As one end of described static switch after the negative electrode of one end of described second resistance and the anode of described second diode and described 3rd diode is connected; As the other end of described static switch after the first end of the other end of described second resistance and the second end of described 3rd switching tube and described 4th switching tube is connected;
The control end of described 3rd switching tube is according to the conducting between the first end of described 3rd switching tube of control signal control of outside and the second end;
The control end of described 4th switching tube is according to the conducting between the first end of described 4th switching tube of control signal control of outside and the second end;
Anti-reverse diode is connected between the first end of described 3rd switching tube and the second end; Anti-reverse diode is connected between the first end of described 4th switching tube and the second end.
5. switching device as claimed in claim 1, it is characterized in that, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 5th switching tube, the 6th switching tube, the 4th diode and the 5th diode;
As one end of described static switch after the first end of described 5th switching tube is connected with the negative electrode of described 4th diode, second end of described 5th switching tube is connected to the anode of described 5th diode, and the control end of described 5th switching tube is according to the conducting between the first end of described 5th switching tube of control signal control of outside and the second end;
As the other end of described static switch after the first end of described 6th switching tube is connected with the negative electrode of described 5th diode, second end of described 6th switching tube is connected to the anode of described 4th diode, and the control end of described 6th switching tube is according to the conducting between the first end of described 6th switching tube of control signal control of outside and the second end;
Second end of described 5th switching tube is also connected with the anode of described 4th diode, and the anode of described 5th diode is also connected with the second end of described 6th switching tube.
6. switching device as claimed in claim 1, it is characterized in that, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 7th switching tube, the 8th switching tube, the 6th diode and the 7th diode;
As one end of static switch after the first end of described 7th switching tube is connected with the anode of the 6th diode, second end of described 7th switching tube is connected to the negative electrode of the 7th diode, and the control end of described 7th switching tube controls the conducting between its first end and the second end according to the control signal of outside;
As the other end of static switch after the first end of described 8th switching tube is connected with the anode of the 7th diode, second end of described 8th switching tube is connected to the negative electrode of described 6th diode, and the control end of described 8th switching tube controls the conducting between its first end and the second end according to the control signal of outside;
Second end of described 7th switching tube is also connected with the negative electrode of described 6th diode, and the negative electrode of described 7th diode is also connected with the second end of described 8th switching tube.
7. switching device as claimed in claim 1, it is characterized in that, described first static switch, described second static switch, described 3rd static switch and described 4th static switch have identical structure, and each static switch comprises: the 9th switching tube, the 8th diode, the 9th diode, the tenth diode and the 11 diode;
As one end of described static switch after the anode of described 8th diode is connected with the negative electrode of described 9th diode, as the other end of described static switch after the anode of described tenth diode is connected with the negative electrode of described 11 diode;
Second end of described 9th switching tube is connected with the anode of described 9th diode and the anode of described 11 diode, the first end of described 9th switching tube is connected with the negative electrode of the negative electrode of described 8th diode and described tenth diode, and the control end of described 9th switching tube is according to the conducting between the first end of described 9th switching tube of control signal control of outside and the second end.
8. the switching device as described in any one of claim 3-7, is characterized in that, each switching tube is gate level turn-off thyristor, power transistor, power field effect transistor or igbt.
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| CN201210293383.7A CN102842954B (en) | 2012-08-16 | 2012-08-16 | A kind of dual power automatic transfer switching equipment of to and fro flow of power |
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| CN201210293383.7A CN102842954B (en) | 2012-08-16 | 2012-08-16 | A kind of dual power automatic transfer switching equipment of to and fro flow of power |
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|---|---|---|---|---|
| CN103192739B (en) * | 2013-04-24 | 2015-03-25 | 王大方 | Hybrid-electric pure electric vehicle energy distributor and control method thereof |
| CN103532218A (en) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | Rapid double power supply switch device and working method thereof |
| CN104638665B (en) * | 2015-03-06 | 2017-10-17 | 南京南瑞继保电气有限公司 | A kind of Hybrid HVDC system load flow inverts control method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2904463Y (en) * | 2005-06-28 | 2007-05-23 | 张镇强 | AC power regulating switch |
| CN102496979A (en) * | 2011-11-28 | 2012-06-13 | 上海交通大学 | Lithium ion battery pack equalizing circuit with automatic polarity switch |
| CN102624080A (en) * | 2012-03-21 | 2012-08-01 | 华中科技大学 | Dual-power automatic transfer switch device |
-
2012
- 2012-08-16 CN CN201210293383.7A patent/CN102842954B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2904463Y (en) * | 2005-06-28 | 2007-05-23 | 张镇强 | AC power regulating switch |
| CN102496979A (en) * | 2011-11-28 | 2012-06-13 | 上海交通大学 | Lithium ion battery pack equalizing circuit with automatic polarity switch |
| CN102624080A (en) * | 2012-03-21 | 2012-08-01 | 华中科技大学 | Dual-power automatic transfer switch device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102842954A (en) | 2012-12-26 |
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