CN205105115U - Many level of modularization transverter and transverter module - Google Patents
Many level of modularization transverter and transverter module Download PDFInfo
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- CN205105115U CN205105115U CN201520890057.3U CN201520890057U CN205105115U CN 205105115 U CN205105115 U CN 205105115U CN 201520890057 U CN201520890057 U CN 201520890057U CN 205105115 U CN205105115 U CN 205105115U
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Abstract
The utility model discloses a transverter module, hold X1, second to draw forth end X2, first half -bridge and second half -bridge including first drawing forth, first half -bridge, second half -bridge are respectively including respective switch element, switch module and energy storage device, after the switch module is established ties with energy storage device to the antithetical couplet is at the both ends of switch element. Transverter modular unit can realize cleaing away direct current short -circuit fault's function, and operation loss and fault current inhibitory effect comprehensive properties are better. The utility model also discloses a many level of modularization transverter, including at least one looks unit, every looks unit comprises a plurality of series connection transverter modules. Many level of modularization transverter can realize between the alternating current -direct current transform, many level voltage source and clear away direct current short -circuit fault's function, can be used for reactive compensation equipment, meritorious or idle emergence equipment, electric energy repayment etc. To use.
Description
Technical field
The utility model relates to a kind of current changer module, also relates to a kind of modularization multi-level converter, belongs to converter technical field.
Background technology
The core of flexible direct current power transmission system is the voltage source converter based on full control device.Multilevel converter is the preferred version realizing high-voltage large-capacity voltage source converter.Relative to two level converters, multilevel converter can use low-voltage device to realize voltage levels and export, and does not need the direct series connection of switching device.In recent years, the appearance of modularization multi-level converter (ModularMultilevelConverter, MMC) made multilevel converter have also been obtained successful application in flexible direct-current transmission field.The converter of modularization multi-level converter adopts modularized design, in series by the identical basic unit module of several structures, each module is called current changer module unit, by the serial module structure number in increase converter and levels of current, different voltage and power grade occasion can be applied to.
For modularization multi-level converter, half-bridge module unit can be selected, full-bridge modules unit, and clamp Dual module unit is as elementary cell, but all there is respective problem in above modular unit: such as half-bridge module unit effectively cannot process the inherent shortcoming of DC Line Fault, when Converter DC-side breaks down, loop is fed to the energy that AC system is directly communicated with because the inverse parallel fly-wheel diode entirely controlling device easily forms fault point, converter action cannot be relied on merely to complete the removing of DC side fault current, alternating current equipment can only be relied on to cut off the connection with AC system.
Full-bridge modules unit entirely controls switch by four and DC support electric capacity forms, and compares conventional half-bridge module, many one times of the switching device of use, and have two entirely to control switches when module exports DC capacitor voltage or bypass all simultaneously and flow through electric current, loss is also twice.
Clamp Dual module is that by one, control switch and two clamping diode cascades form two conventional half-bridge modules entirely, compare full-bridge modules to effectively reduce and entirely control number of switches, reduce running wastage, but this unit is when DC Line Fault, two DC support Capacitance parallel connections of clamp Dual module are put between AC system voltage and fault point, the rising of module direct voltage is comparatively slow, and the dynamic response time removing fault is longer.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of current changer module, solves in prior art the technical problem that when removing direct-current short circuit fault fast, dynamic response time is longer, loss is larger.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of current changer module, comprise the first exit X1, the second exit X2, the first half-bridge 20 and the second half-bridge 21, described first half-bridge 20, second half-bridge 21 includes respective switch element, switch module and energy-storage travelling wave tube respectively, after described switch module is connected with energy-storage travelling wave tube, be connected in parallel on the two ends of switch element;
Described current changer module comprises any one in following four kinds of connected modes:
the first:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge 20 breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge 21 breaker in middle module and energy-storage travelling wave tube C2;
the second:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge 20 breaker in middle module and energy-storage travelling wave tube C1;
the third:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D4;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge 21 breaker in middle module and energy-storage travelling wave tube C2;
4th kind:described switch element comprises the switch element submodule of two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the electrical nodes of two switch element submodules of the second half-bridge 21 breaker in middle unit, and negative electrode is connected with the electric contact of the first half-bridge 20 breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the electrical nodes of two switch element submodules of the first half-bridge 20 breaker in middle unit, and anode is connected with the electric contact of the second half-bridge 21 breaker in middle module and energy-storage travelling wave tube C2.
Described switch module comprises: the first switching tube and the first fly-wheel diode be connected in reverse parallel between the first switching tube collector electrode and emitter;
In described first half-bridge 20, the emitter of the first switching tube is connected with the second exit X2, and collector electrode is connected with the positive pole of energy-storage travelling wave tube C1 in the first half-bridge;
In described second half-bridge 21, the collector electrode of the first switching tube is connected with the first exit X1, and emitter is connected with the negative pole of energy-storage travelling wave tube C2 in the second half-bridge.
Described switch element submodule comprises second switch pipe and is connected in reverse parallel in the second fly-wheel diode between second switch pipe collector and emitter.
another object of the present utility model is to provide a kind of modularization multi-level convertercomprise at least one facies unit, each facies unit is made up of some current changer modules that is connected in series, described current changer module comprises: the first exit X1, the second exit X2, the first half-bridge 20 and the second half-bridge 21, described first half-bridge 20, second half-bridge 21 includes respective switch element, switch module and energy-storage travelling wave tube respectively, after described switch module is connected with energy-storage travelling wave tube, be connected in parallel on the two ends of switch element;
Described current changer module comprises any one in following four kinds of connected modes:
the first:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge 20 breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge 21 switch module and energy-storage travelling wave tube C2;
the second:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge 20 breaker in middle module and energy-storage travelling wave tube C1;
the third:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D4;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge 21 breaker in middle module and energy-storage travelling wave tube C2;
4th kind:described switch element comprises the switch element submodule of two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the electrical nodes of two switch element submodules of the second half-bridge 21 breaker in middle unit, and negative electrode is connected with the electric contact of the first half-bridge 20 breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the electrical nodes of two switch element submodules of the first half-bridge 20 breaker in middle unit, and anode is connected with the electric contact of the second half-bridge 21 breaker in middle module and energy-storage travelling wave tube C2.
Described switch module comprises: the first switching tube and the first fly-wheel diode be connected in reverse parallel between the first switching tube collector electrode and emitter;
In described first half-bridge 20, the emitter of the first switching tube is connected with the second exit X2, and collector electrode is connected with the positive pole of energy-storage travelling wave tube C1 in the first half-bridge 20;
In described second half-bridge 21, the collector electrode of the first switching tube is connected with the first exit X1, and emitter is connected with the negative pole of energy-storage travelling wave tube C2 in the second half-bridge 21.
Described switch element submodule comprises second switch pipe and is connected in reverse parallel in the second fly-wheel diode between second switch pipe collector and emitter.
Compared with prior art, the utility model reaches
beneficial effect:
(1) by two asymmetrical half-bridge block combiner together, form current changer module cellular construction of the present utility model, provide good DC Line Fault ride-through capability;
(2) described converter can realize multi-level voltage source and remove the function of direct-current short circuit fault, running wastage and fault current inhibition combination property better;
(3) under converter startup and failure locking state, all diode circuits of described current changer module unit are symmetrical relative to two terminals, thus provide at least two useful characteristics: one be starting state from AC charging time, the equivalent capacity of each brachium pontis is consistent, the climbing speed of capacitance voltage is basically identical, thus the high potential energy collecting of whole converter and monitoring one to be made peace coordination more; Two is under failure locking state, and two capacitances in series of current changer module unit are put between AC power and fault point, rapid lifting direct voltage during fault, and remove direct-current short circuit fault fast, dynamic response is fast;
(4) converter of described current changer module unit formation, its Baseline Control Strategy can be compatible with the converter of conventional half-bridge module composition, has portability.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the embodiment one of current changer module in the utility model;
Fig. 2 is the first execution mode circuit diagram of the switch element of current changer module in the utility model;
Fig. 3 is the capacitor charge and discharge pattern of the embodiment one of current changer module in the utility model;
Fig. 4 is the bypass operating mode of the embodiment one of current changer module in the utility model;
Fig. 5 is that the direct fault current of the embodiment one of current changer module in the utility model suppresses mode of operation;
Fig. 6 is the second execution mode circuit diagram of the switch element of current changer module in the utility model;
Fig. 7 is the third execution mode circuit diagram of the switch element of current changer module in the utility model;
Fig. 8 is the circuit diagram of the embodiment five of current changer module in the utility model;
Fig. 9 is the capacitor charge and discharge pattern of the embodiment five of current changer module in the utility model;
Figure 10 is the bypass operating mode of the embodiment five of current changer module in the utility model;
Figure 11 is that the direct fault current of the embodiment five of current changer module in the utility model suppresses mode of operation;
Figure 12 is the circuit diagram of the embodiment six of current changer module in the utility model;
Figure 13 is the capacitor charge and discharge pattern of the embodiment six of current changer module in the utility model;
Figure 14 is the bypass operating mode of the embodiment six of current changer module in the utility model;
Figure 15 is that the direct fault current of the embodiment six of current changer module in the utility model suppresses mode of operation;
Figure 16 is the circuit diagram of the embodiment seven of current changer module in the utility model;
Figure 17 is the circuit diagram of the embodiment eight of current changer module in the utility model;
Figure 18 is the circuit diagram of a kind of modularization multi-level converter in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model with this.
The utility model discloses a kind of current changer module, comprise the first exit X1, the second exit X2, the first half-bridge 20 and the second half-bridge 21, described first half-bridge 20, second half-bridge 21 includes respective switch element, switch module and energy-storage travelling wave tube respectively, after described switch module is connected with energy-storage travelling wave tube, be connected in parallel on the two ends of switch element.
embodiment one:
As shown in Figure 1, current changer module comprises the first exit X1, the second exit X2, diode D3, diode D4, the first half-bridge 20 and the second half-bridge 21, described first half-bridge 20 comprises the first switch element 30, first switch module and energy-storage travelling wave tube C1, and the first switch module is connected in parallel on the two ends of the first switch element 20 after connecting with energy-storage travelling wave tube C1; Second half-bridge 21 comprises second switch unit 31, second switch module and energy-storage travelling wave tube C2, and second switch module is connected in parallel on the two ends of second switch unit 31 after connecting with energy-storage travelling wave tube C2; The negative pole of energy-storage travelling wave tube C1 connects the positive pole of energy-storage travelling wave tube C2;
The anode of diode D3 is connected with the first exit X1, and negative electrode is connected with the node of the first switch module and energy-storage travelling wave tube C1;
The negative electrode of diode D4 is connected with the second exit X2, and anode is connected with the node of second switch module and energy-storage travelling wave tube C2.
As shown in Figure 2, the first switch element 30 comprises two switch element submodules of differential concatenation; Second switch unit 31 is identical with the first switch element circuit diagram.
For each switch module, switch element submodule, include switching tube and the diode (" fly-wheel diode " that be also namely commonly called as) with its reverse parallel connection, the negative electrode of described fly-wheel diode is connected with the collector electrode of corresponding switching tube, and the anode of fly-wheel diode is connected with the emitter of corresponding switching tube.
As shown in Figure 1, first switch module comprises switch transistor T 1 and is connected in reverse parallel in the sustained diode 1 between switch transistor T 1 collector electrode and emitter, and second switch module comprises switch transistor T 2 and is connected in reverse parallel in the sustained diode 2 between switch transistor T 2 collector electrode and emitter; The emitter of switch transistor T 1 is connected with the second exit X2, and collector electrode is connected with the positive pole of energy-storage travelling wave tube C1; The collector electrode of switch transistor T 2 is connected with the first exit X1, and emitter is connected with the negative pole of energy-storage travelling wave tube C2.
As shown in Figure 2, switch element submodule comprises the diode D51 of switch transistor T 51 and reverse parallel connection, or the diode D52 of switch transistor T 52 and reverse parallel connection.And note circuit as shown in Figure 2, the circuit module that the emitter of the switching tube in two switch element submodules is connected to form is switch element 32, that is, the first switch element 30 adopts the circuit of switch element 32, and second switch unit 31 also adopts the circuit of switch element 32.
The mode of operation of this current changer module unit is divided into: charge mode, bypass mode and direct fault current suppression mode;
Charge mode, as shown in Figure 3, messenger is increased to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 add cut-off signals, first exit X1, second switch module, energy-storage travelling wave tube C2, energy-storage travelling wave tube C1, the first switch module and the second exit X2 form loop, and bridge arm current Ileg is energy-storage units C1, C2 discharge and recharge;
Bypass mode, as shown in Figure 4, cut-off signals is added to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 increase messenger, and bridge arm current Ileg is by the first exit X1, second switch unit 31, first switch element 30, second exit X2 bypass;
Direct fault current suppression mode, as shown in Figure 5, cut-off signals is added to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 add cut-off signals, direct fault current Ishort flows into from the first exit X1 of described current changer module unit, be energy-storage units C1, C2 serial connection charge by diode D3, D4, flow out from the second exit X2, suppress direct fault current.
All diode circuits of current changer module unit are symmetrical relative to two leading-out terminals, thus provide at least two useful characteristics: one be starting state from AC charging time, the equivalent capacity of each brachium pontis is consistent, the climbing speed of capacitance voltage is basically identical, thus the high potential energy collecting of whole converter and monitoring one to be made peace coordination more; Two is under failure locking state, and two capacitances in series of current changer module unit are put between AC power and fault point, rapid lifting direct voltage during fault, and remove direct-current short circuit fault fast, dynamic response is fast.
embodiment two:
Be the first switch element 30 and second switch unit 31 with the difference of embodiment one, as shown in Figure 6, the first switch element 30, second switch unit 31 comprise two switch element submodules of differential concatenation.
Switch element submodule comprises the diode D53 of switch transistor T 53 and reverse parallel connection, or the diode D54 of switch transistor T 54 and reverse parallel connection.And remember that the module that the collector electrode of the switching tube in two switch element submodules is connected to form is switch element 33, that is, the first switch element 30 adopts the circuit of switch element 33, and second switch unit 31 also adopts the circuit of switch element 33 as shown in Figure 6.
embodiment three:
Second switch unit 31 is with the difference of embodiment one, as shown in Figure 7, second switch unit (21) comprises switch element submodule, switch element submodule comprises the diode D55 of switch transistor T 55 and reverse parallel connection, and remember that a switch element submodule is switch element 34, namely as shown in Figure 7, first switch element 30 adopts the circuit of switch element 32, and second switch unit 31 adopts the circuit of switch element 34.
embodiment four:
Be second switch unit 31 with the difference of embodiment two, second switch unit 31 adopts the circuit of switch element 34.
embodiment five:
As shown in Figure 8, current changer module comprises the first exit X1, the second exit X2, diode D3, diode D4, the first half-bridge 20 and the second half-bridge 21, described first half-bridge 20 comprises the first switch element 30, first switch module and energy-storage travelling wave tube C1, and the first switch module is connected in parallel on the two ends of the first switch element 30 after connecting with energy-storage travelling wave tube C1; Second half-bridge 21 comprises second switch unit 31, second switch module and energy-storage travelling wave tube C2, and second switch module is connected in parallel on the two ends of second switch unit 31 after connecting with energy-storage travelling wave tube C2; The negative pole of energy-storage travelling wave tube C1 connects the positive pole of energy-storage travelling wave tube C2;
First switch element 30 adopts the circuit of switch element 32, and second switch unit 31 adopts the circuit of switch element 33;
The anode of diode D3 is connected with the electrical nodes of two switching tubes of second switch unit 31, and negative electrode is connected with the electric contact of the first switch module and energy-storage travelling wave tube C1;
The negative electrode of diode D4 is connected with the electrical nodes of two switching tubes of the first switch element 30, and anode is connected with the electric contact of second switch module and energy-storage travelling wave tube C2.
The mode of operation of this current changer module unit is divided into: charge mode, bypass mode and direct fault current suppression mode;
Charge mode, as shown in Figure 9, messenger is increased to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 add cut-off signals, first exit X1, second switch module, energy-storage travelling wave tube C2, energy-storage travelling wave tube C1, the first switch module and the second exit X2 form loop, and bridge arm current Ileg is energy-storage units C1, C2 discharge and recharge;
Bypass mode, as shown in Figure 10, cut-off signals is added to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 increase messenger, and bridge arm current Ileg is by the first exit X1, second switch unit 31, first switch element 30, second exit X2 bypass;
Direct fault current suppression mode, as shown in figure 11, cut-off signals is added to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 add cut-off signals, direct fault current Ishort flows into from the first exit X1 of described current changer module unit, by sustained diode 54 in sustained diode 51, second switch unit 31 in diode D3, D4, the first switch element 30 be energy-storage units C1, C2 charging, flow out from the second exit X2, suppress direct fault current.
embodiment six:
As shown in figure 12, current changer module comprises the first exit X1, the second exit X2, diode D3, the first half-bridge 20 and the second half-bridge 21, described first half-bridge 20 comprises the first switch element 30, first switch module and energy-storage travelling wave tube C1, and the first switch module is connected in parallel on the two ends of the first switch element 30 after connecting with energy-storage travelling wave tube C1; Second half-bridge 21 comprises second switch unit 31, second switch module and energy-storage travelling wave tube C2, and second switch module is connected in parallel on the two ends of second switch unit 31 after connecting with energy-storage travelling wave tube C2; The negative pole of energy-storage travelling wave tube C1 connects the positive pole of energy-storage travelling wave tube C2;
First switch element 30 adopts the circuit of switch element 34, and second switch unit 31 adopts the circuit of switch element 32;
The anode of diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first switch module and energy-storage travelling wave tube C1.
The mode of operation of this current changer module unit is divided into: charge mode, bypass mode and direct fault current suppression mode;
Charge mode, as shown in figure 13, messenger is increased to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 add cut-off signals, first exit X1, second switch module, energy-storage travelling wave tube C2, energy-storage travelling wave tube C1, the first switch module and the second exit X2 form loop, and bridge arm current Ileg is energy-storage units C1, C2 discharge and recharge;
Bypass mode, as shown in figure 14, cut-off signals is added to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 increase messenger, and bridge arm current Ileg is by the first exit X1, second switch unit 31, first switch element 30, second exit X2 bypass;
Direct fault current suppression mode, as shown in figure 15, cut-off signals is added to the first switch module breaker in middle pipe T1, second switch module breaker in middle pipe T2, first switch element 30 and second switch unit 31 add cut-off signals, direct fault current Ishort flows into from the first exit X1 of described current changer module unit, by sustained diode 55 in diode D3, the first switch element 30, for energy-storage units C1 charges, flow out from the second exit X2, suppress direct fault current.
embodiment seven:
As shown in figure 16, be second switch unit 31 with the difference of embodiment six, second switch unit 31 adopts the circuit of switch element 33.
embodiment eight:
As shown in figure 17, current changer module comprises the first exit X1, the second exit X2, diode D4, the first half-bridge 20 and the second half-bridge 21, described first half-bridge 20 comprises the first switch element 30, first switch module and energy-storage travelling wave tube C1, and the first switch module is connected in parallel on the two ends of the first switch element 30 after connecting with energy-storage travelling wave tube C1; Second half-bridge 21 comprises second switch unit 31, second switch module and energy-storage travelling wave tube C2, and second switch module is connected in parallel on the two ends of second switch unit 31 after connecting with energy-storage travelling wave tube C2; The negative pole of energy-storage travelling wave tube C1 connects the positive pole of energy-storage travelling wave tube C2;
First switch element 30 adopts the circuit of switch element 33, and second switch unit 31 adopts the circuit of switch element 34;
The negative electrode of diode D4 is electrically connected with the second exit X2, and anode is connected with the electric contact of second switch module and energy-storage travelling wave tube C2.
embodiment nine:
Be that the first switch element 30, first switch element 30 adopts the circuit of switch element 32 with the difference of embodiment eight.
Current changer module can realize the function removing direct-current short circuit fault, running wastage and fault current inhibition combination property better.
The invention also discloses a kind of modularization multi-level converter, comprise at least one facies unit, each facies unit is made up of some current changer modules that is connected in series, as shown in figure 18, each facies unit 100 comprises some current changer module unit 10 and connects, second exit X2 of first current changer module is connected with positive electrode bus P, second exit X2 of second current changer module is connected with the first exit X1 of first current changer module, connect successively several current changer modules 10, the first exit X1 of last current changer module is connected with negative electrode bus N.Current changer module 10 can be any one execution mode in above-mentioned nine embodiments.
Multiple facies unit in modularization multi-level converter, can realize converting between alternating current-direct current, the function of multi-level voltage source and removing direct-current short circuit fault, running wastage and fault current inhibition combination property better.May be used for the application such as reactive-load compensation equipment, meritorious or idle generation equipment, electric energy feedback.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection range of the present utility model.
Claims (6)
1. a current changer module, it is characterized in that, comprise the first exit X1, the second exit X2, the first half-bridge (20) and the second half-bridge (21), described first half-bridge (20), the second half-bridge (21) include respective switch element, switch module and energy-storage travelling wave tube respectively, after described switch module is connected with energy-storage travelling wave tube, be connected in parallel on the two ends of switch element;
Described current changer module comprises any one in following four kinds of connected modes:
the first:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge (20) breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge (21) breaker in middle module and energy-storage travelling wave tube C2;
the second:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge (20) breaker in middle module and energy-storage travelling wave tube C1;
the third:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D4;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge (21) breaker in middle module and energy-storage travelling wave tube C2;
4th kind:described switch element comprises the switch element submodule of two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the electrical nodes of two switch element submodules of the second half-bridge (21) breaker in middle unit, and negative electrode is connected with the electric contact of the first half-bridge (20) breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the electrical nodes of two switch element submodules of the first half-bridge (20) breaker in middle unit, and anode is connected with the electric contact of the second half-bridge (21) breaker in middle module and energy-storage travelling wave tube C2.
2. a kind of current changer module according to claim 1, is characterized in that: described switch module comprises: the first switching tube and the first fly-wheel diode be connected in reverse parallel between the first switching tube collector electrode and emitter;
In described first half-bridge (20), the emitter of the first switching tube is connected with the second exit X2, and collector electrode is connected with the positive pole of energy-storage travelling wave tube C1 in the first half-bridge (20);
In described second half-bridge (21), the collector electrode of the first switching tube is connected with the first exit X1, and emitter is connected with the negative pole of energy-storage travelling wave tube C2 in the second half-bridge (21).
3. a kind of current changer module according to claim 1, is characterized in that: described switch element submodule comprises second switch pipe and is connected in reverse parallel in the second fly-wheel diode between second switch pipe collector and emitter.
4. a modularization multi-level converter, it is characterized in that: comprise at least one facies unit, each facies unit is made up of some current changer modules that is connected in series, described current changer module comprises: the first exit X1, the second exit X2, the first half-bridge (20) and the second half-bridge (21), described first half-bridge (20), the second half-bridge (21) include respective switch element, switch module and energy-storage travelling wave tube respectively, after described switch module is connected with energy-storage travelling wave tube, be connected in parallel on the two ends of switch element;
Described current changer module comprises any one in following four kinds of connected modes:
the first:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge (20) breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge (21) switch module and energy-storage travelling wave tube C2;
the second:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D3;
The anode of described diode D3 is connected with the first exit X1, and negative electrode is connected with the electric contact of the first half-bridge (20) breaker in middle module and energy-storage travelling wave tube C1;
the third:described switch element comprises the switch element submodule of a switch element submodule or two differential concatenations, and described current changer module also comprises diode D4;
The negative electrode of described diode D4 is connected with the second exit X2, and anode is connected with the electric contact of the second half-bridge (21) breaker in middle module and energy-storage travelling wave tube C2;
4th kind:described switch element comprises the switch element submodule of two differential concatenations, and described current changer module also comprises diode D3, diode D4;
The anode of described diode D3 is connected with the electrical nodes of two switch element submodules of the second half-bridge (21) breaker in middle unit, and negative electrode is connected with the electric contact of the first half-bridge (20) breaker in middle module and energy-storage travelling wave tube C1;
The negative electrode of described diode D4 is connected with the electrical nodes of two switch element submodules of the first half-bridge (20) breaker in middle unit, and anode is connected with the electric contact of the second half-bridge (21) breaker in middle module and energy-storage travelling wave tube C2.
5. a kind of modularization multi-level converter according to claim 4, is characterized in that: described switch module comprises: the first switching tube and the first fly-wheel diode be connected in reverse parallel between the first switching tube collector electrode and emitter;
In described first half-bridge (20), the emitter of the first switching tube is connected with the second exit X2, and collector electrode is connected with the positive pole of energy-storage travelling wave tube C1 in the first half-bridge (20);
In described second half-bridge (21), the collector electrode of the first switching tube is connected with the first exit X1, and emitter is connected with the negative pole of energy-storage travelling wave tube C2 in the second half-bridge (21).
6. a kind of modularization multi-level converter according to claim 4, is characterized in that: described switch element submodule comprises second switch pipe and is connected in reverse parallel in the second fly-wheel diode between second switch pipe collector and emitter.
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| CN201520890057.3U CN205105115U (en) | 2015-11-09 | 2015-11-09 | Many level of modularization transverter and transverter module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245117A (en) * | 2015-11-09 | 2016-01-13 | 南京南瑞继保电气有限公司 | Modular multilevel converter and converter module |
| CN111711350A (en) * | 2020-06-04 | 2020-09-25 | 国网浙江省电力有限公司电力科学研究院 | MMC converter valve operation reliability improving method |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105245117A (en) * | 2015-11-09 | 2016-01-13 | 南京南瑞继保电气有限公司 | Modular multilevel converter and converter module |
| CN111711350A (en) * | 2020-06-04 | 2020-09-25 | 国网浙江省电力有限公司电力科学研究院 | MMC converter valve operation reliability improving method |
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