CN211909480U - Converter, high-voltage direct current transmission facility and reactive power compensation facility - Google Patents
Converter, high-voltage direct current transmission facility and reactive power compensation facility Download PDFInfo
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- CN211909480U CN211909480U CN201690001821.XU CN201690001821U CN211909480U CN 211909480 U CN211909480 U CN 211909480U CN 201690001821 U CN201690001821 U CN 201690001821U CN 211909480 U CN211909480 U CN 211909480U
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
- H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel converter
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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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
- H05K7/1432—Housings specially adapted for power drive units or power converters
- H05K7/14339—Housings specially adapted for power drive units or power converters specially adapted for high voltage operation
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inverter Devices (AREA)
Abstract
The utility model relates to a converter, it has a plurality of modules, the module has at least two electronic switch element and electric energy storage device respectively. The energy storage device is a liquid cooled energy storage device. The utility model discloses still relate to one kind have the high voltage direct current transmission facility of converter and one kind have the reactive power compensation facility of converter.
Description
Technical Field
The utility model relates to a converter, it has a plurality of modules, the module has at least two electronic switch element and electric energy storage device respectively. Furthermore, the invention relates to a high voltage direct current transmission facility with a converter and a reactive power compensation facility with a converter.
Background
A converter is a power electronic circuit for converting electrical energy. By means of the converter, it is possible to convert alternating currents into direct currents, direct currents into alternating currents, alternating currents into alternating currents of other frequencies and/or amplitudes or direct currents into direct currents of other voltages. The converter can have a plurality of modules of the same kind as described above (which are also referred to as submodules), which are electrically connected in series. Such converters are referred to as modular multilevel converters and belong to the class of VSC converters (voltage source converter). A high output voltage can be achieved by means of the electrical series circuit of the modules. The converter can be easily adapted to different voltages (scalable) and can produce the desired output voltage relatively accurately. Modular multilevel converters are usually used in the high-voltage range, for example as converters in high-voltage direct current transmission systems.
In operation of such converters, the electrical energy storage device is charged and discharged again with electrical energy. Due to the high currents flowing in this case, the electrical energy storage device may heat up strongly; a large power loss may occur in the energy storage device and a large amount of heat (waste heat) is generated. Therefore, a relatively large distance must be formed between a plurality of electrical energy storage devices or between an electrical energy storage device and an adjacent component in order to be able to discharge waste heat from the electrical energy storage device to the ambient air and to be able to carry it away by means of the ambient air (passive cooling of the electrical energy storage device by air convection).
SUMMERY OF THE UTILITY MODEL
The present invention is based on the object of specifying a converter and a method in which the packing density of an electrical energy storage device can be increased.
The object is achieved by a converter having a plurality of modules, each having at least two electronic switching elements and an electrical energy storage device, a high-voltage direct current transmission facility having the converter, and a reactive power compensation facility having the converter. Advantageous embodiments of the current transformer and of the method are given below.
If a converter with a plurality of modules is disclosed, each module has at least two electronic switching elements and an electrical energy storage device, the energy storage devices are liquid-cooled energy storage devices. That is, the energy storage device is cooled by means of liquid cooling. In other words, the energy storage device is cooled by means of a liquid coolant (cooling liquid). The energy storage device can be, for example, a capacitor. In this case, it is particularly advantageous if the energy storage device discharges the heat generated therein (waste heat) to the cooling liquid and not to the ambient air. Thus, a large free space or space around the energy storage device is not necessary, since the cooling of the energy storage device is not based on convection. The packing density of the energy storage devices in the converter (i.e. the number of energy storage devices per volume unit) can advantageously be increased, i.e. the energy storage devices can be installed, for example, close together. With improved cooling, energy storage devices having greater energy or power densities may also be used. The service life of the energy storage device is also increased by better cooling and thus less heating of the energy storage device. Furthermore, the ambient air of the energy storage device is heated only slightly, so that the effort for air conditioning the space in which the converter is arranged can be reduced considerably in comparison with passive air cooling.
The converter can be designed such that it has a cooling device with a liquid coolant. As the liquid coolant, for example, deionized water (deionized water) or ethylene glycol can be used.
The converter can be designed such that the energy storage device is thermally coupled to the coolant. By means of the thermal coupling, the waste heat can be discharged quickly and completely from the energy storage device to the liquid coolant.
The converter can also be designed such that the energy storage device is thermally coupled to the coolant, wherein the energy storage device is provided with a cooling body (energy storage device cooling body) and the cooling body is thermally coupled to the coolant. In the present embodiment, waste heat is first discharged from the condenser to the cooling body and then discharged from the cooling body to the coolant.
The converter can be designed such that the electronic switching elements are liquid-cooled electronic switching elements. In other words, the electronic switching element can be cooled by means of a liquid coolant (cooling liquid). The electronic switching element can thereby also be cooled advantageously by means of a liquid coolant.
The current transformer can also be designed such that the electronic switching element is thermally coupled to the coolant.
In particular, the converter can be designed such that the electronic switching element is thermally coupled to the coolant, wherein the electronic switching element is provided with a cooling body (switching element cooling body) and the cooling body is thermally coupled to the coolant.
The converter can also be designed such that the cooling device has a coolant circuit (coolant circuit) for cooling the energy storage device. The coolant circuit enables efficient removal of waste heat of the energy storage device.
The converter can also be designed such that the cooling device has a coolant pump and a heat exchanger (heat exchanger).
The converter can be designed such that the energy storage means for the electricity is a capacitor. In particular, the electrical energy storage device can be a unipolar capacitor, that is to say a capacitor having a predetermined polarity of the two capacitor terminals.
The converter can be designed such that
The two electronic switching elements of the module are arranged in a half-bridge circuit, or
The modules each have two of said electronic switching elements and two other electronic switching elements,
wherein the two electronic switching elements and the two other electronic switching elements are arranged as a full bridge circuit.
In this case, the two other electronic switching elements can be cooled as well as the two electronic switching elements. In the case of the first alternative, such a module is also referred to as a half-bridge module or as a half-bridge submodule. In the case of the second alternative, such a module is also referred to as a full-bridge module or as a full-bridge submodule.
A high-voltage direct-current transmission installation and a reactive power compensation installation with a converter according to the aforementioned variants are also disclosed.
A method for cooling at least one electrical energy store of a converter is also disclosed, wherein the converter has a plurality of modules, wherein each of the modules has at least two electronic switching elements and an electrical energy store, wherein in the method
Cooling the electrical energy storage device by means of a liquid coolant.
Preferably, the energy storage devices of the modules can be cooled by means of a liquid coolant.
The method can be carried out in the following manner: the electronic switching elements of the respective module are also cooled by means of a liquid coolant.
The method can be carried out in the following manner: the liquid coolant is transported to the energy storage device by means of a coolant circuit.
The method can also be carried out in the following manner: the liquid coolant is transported to the electronic switching element by means of a coolant circuit.
The described converter and the described method have the same or similar advantages.
Drawings
The present invention will be described in detail below with reference to examples. The same reference numerals are used here to designate the same or functionally equivalent elements. To this end
Fig. 1 shows an exemplary embodiment of a converter having a plurality of modules;
one embodiment of a module is shown in FIG. 2;
another embodiment of a module is shown in fig. 3;
in fig. 4 an embodiment of a high voltage direct current transmission installation is shown;
in fig. 5 an embodiment of a reactive power compensation installation is shown; and
fig. 6 shows an exemplary process flow of a method for cooling an energy storage device of a module of a converter.
Detailed Description
Fig. 1 shows a converter 1 in the form of a Modular Multilevel Converter (MMC) 1. The multilevel converter 1 has a first alternating voltage terminal 5, a second alternating voltage terminal 7 and a third alternating voltage terminal 9. The first ac voltage terminal 5 is electrically connected to the first phase module branch 11 and the second phase module branch 13. The first phase module branch 11 and the second phase module branch 13 form a first phase module 15 of the converter 1. The end of the first phase module branch 11 facing away from the ac voltage terminal 5 is electrically connected to a first dc voltage terminal 16; the end of the second phase module branch 13 facing away from the first ac voltage terminal 5 is electrically connected to a second dc voltage terminal 17. The first dc voltage terminal 16 is a positive dc voltage terminal; the second dc voltage terminal 17 is a negative dc voltage terminal.
The second ac voltage terminal 7 is electrically connected to an end of the third phase module branch 18 and to an end of the fourth phase module branch 21. The third phase module branch 18 and the fourth phase module branch 21 form a second phase module 24. The third ac voltage terminal 9 is electrically connected to an end of the fifth phase module branch 27 and to an end of the sixth phase module branch 29. The fifth phase module branch 27 and the sixth phase module branch 29 form a third phase module 31.
The end of the third phase module branch 18 facing away from the second alternating voltage terminal 7 and the end of the fifth phase module branch 27 facing away from the third alternating voltage terminal 9 are electrically connected to the first direct voltage terminal 16. The end of the fourth phase module branch 21 facing away from the second ac voltage terminal 7 and the end of the sixth phase module branch 29 facing away from the third ac voltage terminal 9 are electrically connected to the second dc voltage terminal 17. The first phase module branch 11, the third phase module branch 18 and the fifth phase module branch 27 form a positive side converter section 32; the second phase module branch 13, the fourth phase module branch 21 and the sixth phase module branch 29 form a negative-side converter section 33.
Each phase module branch has a plurality of modules (1_1, 1_2, 1_3, 1_4, … …, 1_ n; 2_1, … …, 2_ n; etc.), which are electrically connected in series (by means of their electrical current terminals). Such modules are also referred to as submodules. In the embodiment of fig. 1, each phase module branch has n modules. The number of modules electrically connected in series by means of their current terminals can be very different, at least two modules being connected in series, however, for example, also 3, 50, 100 or more modules can be electrically connected in series. In an embodiment, n-36: that is to say, the first phase module branch 11 has 36 modules 1_1, 1_2, 1_3, … …, 1_ 36. The other phase module branches 13, 18, 21, 27 and 29 are of the same type.
Optical messages or optical signals are transmitted by a control device (not shown) of the converter 1 via an optical communication connection (for example via an optical waveguide) to the individual modules 1_1 to 6_ n. For example, the control device sends a desired value for the height of the output voltage, which is to be provided by the respective module, to the respective module.
The converter 1 has a cooling device 50. The cooling device 50 has a coolant tank 52, a pump 54 (coolant pump 54), and a heat exchanger 56 (heat exchanger 56). The coolant reservoir 52, the pump 54 and the heat exchanger 56 are connected via coolant lines 60 to the individual modules 1_1, … …, 6_ n of the converter 1. (coolant line 60 is shown in the embodiment by means of two parallel lines in the form of pipes.) thus, for example, the heat exchanger 56 is connected to the module 1_1 via a go-coolant line 60 a; module 1_1 is connected to module 1_2 via coolant line 60 b; and module 1_2 is connected to module 1_3 via coolant line 60 c. In the same way, the module 1_3 is connected with the next module 1_4 (not shown) via coolant lines, and so on. The last module 1 — n of the phase module branch 11 is connected to the coolant reservoir 52 via a return cooling line 60 d. The coolant tank 52 is connected to the pump 54 via a coolant line 60; the pump 54 is connected to the heat exchanger 56 via a coolant line 60.
A reservoir of coolant 70 is present in the coolant reservoir 52. The coolant 70 can be pumped from the coolant reservoir 52 by means of the pump 54 through the heat exchanger 56, through the modules 1_1, … …, 1_ n of the first phase module branch 11 and then back to the coolant reservoir 52. The cooling device 50 thus has a coolant circuit 72. Also connected to the coolant circuit 72 are the modules 3_1, … …, 3_ n of the third phase module branch 18 and the modules 5_1, … …, 5_ n of the fifth phase module branch 27. That is to say that the energy storage devices of a plurality of modules and/or the electronic switching elements of a plurality of modules (here modules 1_1, … …, 1_ n of the first phase module branch 11, modules 3_1, … …, 3_ n of the third phase module branch, and modules 5_1, … …, 5_ n of the fifth phase module branch 27) can be cooled simultaneously by means of the coolant circuit 72.
For cooling the electronic switching elements and/or the energy storage devices of the modules of the second phase module branch 13, of the fourth phase module branch 21 and of the sixth phase module branch 29, a further cooling device 80 is present. The further cooling device 80 is constructed identically to the cooling device 50 described above. It goes without saying that in a further embodiment it is also possible to cool all modules of the converter 1 by means of a single cooling device (that is to say by means of a single coolant container 52, a single pump 54 and a single heat exchanger 56). Alternatively, it is also possible to use more than two cooling devices for cooling the modules of the converter 1.
The coolant reservoir 52 contains a reservoir of coolant 70. The coolant reservoir 52 is optional: the coolant can also be present in a sufficient amount in the coolant line 60, in the pump 54 and in the heat exchanger 56.
The construction of the module 201 is shown by way of example in fig. 2. In this case, for example, the module 1_1 of the first phase module branch 11 (or also one of the other modules shown in fig. 1) can be involved. The module is constructed as a half-bridge module 201. The module 201 has a first electronic switching element 202 (first electronic switching element 202) that can be switched on and off and has a first diode 204 (first freewheeling diode 204) connected in anti-parallel. Furthermore, the module 201 has a second electronic switching element 206 (second electronic switching element 206) that can be switched on and off, which has a second antiparallel-connected diode 208 (second freewheeling diode 208) and an electrical energy storage device 210 in the form of a capacitor 210. The first electronic switching element 202 and the second electronic switching element 206 are each configured as an insulated-gate bipolar transistor (IGBT). The first electronic switching element 202 is electrically connected in series with the second electronic switching element 206. At the connection point between the two electronic switching elements 202 and 206, a (galvanic) first module terminal 212 is provided. A second module terminal 215 (for current flow) is provided at a terminal of the second switching element 206 opposite to the connection point. The second module terminal 215 is also connected with the first terminal of the energy storage device 210; a second terminal of the energy storage device 210 is electrically connected to a terminal of the first switching element 202 opposite the connection point.
That is, the energy storage device 210 is electrically connected in parallel with the series circuit composed of the first switching element 202 and the second switching element 206. By actuating the first switching element 202 and the second switching element 206 accordingly, it is possible to output either the voltage of the energy storage device 210 or no voltage (i.e., zero voltage) between the first module terminal 212 and the second module terminal 215. The respective desired output voltage of the converter can thus be generated by the modules of the individual phase module branches interacting with one another. In the present exemplary embodiment, the actuation of the first switching element 202 and the second switching element 206 takes place by means of messages and signals (mentioned above) which are transmitted from the control device of the converter to the module.
The first electronic switching element 202 is provided with a first switching element cooling body 220; the second electronic switching element 206 is provided with a second switching element cooling body 222. The first freewheel diode 204 is provided with a first diode cooler 226; the second freewheeling diode 208 is provided with a second diode cooling body 228. The energy storage device 210 is provided with an energy storage device cooling body 230. The cooling bodies 220, 222, 226, 228 and 230 can each consist of a solid metal, for example copper or aluminum. The cooling body is only schematically shown in fig. 2. The cooling bodies 220, 222, 226, 228 and 230 are in close thermal contact with the respective components and are able to absorb the waste heat generated in the components and to be conducted back to the liquid coolant 70. Thus, the cooling bodies 220, 222, 226, 228, and 230 are in close thermal contact (thermal coupling) with the coolant 70, respectively. Thus, the energy storage device 210, the first electronic switching element 202, the second electronic switching element 206, the first freewheeling diode 204 and the second freewheeling diode 208 are thermally coupled with the coolant 70.
In the lower part of fig. 2, the coolant 70 flowing into the module 201 is shown by means of arrows 236; in the upper part of fig. 2, the coolant 70 flowing out of the module 201 is shown by means of an arrow 238. That is, the first electronic switching element 202, the second electronic switching element 206, the first freewheeling diode 204, the second freewheeling diode 208 and the energy storage device 210 can be cooled by means of the coolant 70 flowing through the module 201. Alternatively, it is of course also possible to cool only individual components of the module, for example only the energy storage device 210, by means of the coolant 70. In this case, further cooling possibilities can exist for the cooling of the switching element and the freewheeling diode, for example a separate coolant circuit.
The coolant 70 absorbs the waste heat of the energy storage device 210. Furthermore, the coolant 70 absorbs waste heat of the first electronic switching element 202, of the second electronic switching element 206, of the first freewheeling diode 204 and of the second freewheeling diode 208. The coolant 70 transports the absorbed waste heat to the heat exchanger 56. The heat exchanger 56 discharges waste heat of the coolant to the ambient air (preferably, the heat exchanger 56 discharges waste heat to the ambient air located outside the converter building). That is, the energy storage device 210 is a liquid cooled energy storage device 210; the energy storage device 210 is cooled by means of the liquid coolant 70. In the same way, the electronic switching elements 202, 206 are liquid-cooled electronic switching elements 202, 206.
Fig. 3 shows a further exemplary embodiment of a module 301 of a modular multilevel converter. The module 301 can be, for example, the module 1_2 (or also one of the other modules shown in fig. 1). In addition to the first electronic switching element 202, the second electronic switching element 206, the first freewheeling diode 204, the second freewheeling diode 208 and the energy storage device 210, which are already known from fig. 2, the module 301 shown in fig. 3 has a third electronic switching element 302 with an antiparallel-connected third freewheeling diode 304 and a fourth electronic switching element 306 with an antiparallel-connected fourth freewheeling diode 308. The third electronic switching element 302 and the fourth electronic switching element 306 are each configured as an IGBT. In contrast to the circuit of fig. 2, the second module terminal 315 is not electrically connected to the second electronic switching element 206, but rather to a midpoint of the electrical series circuit formed by the third electronic switching element 302 and the fourth electronic switching element 306.
The module 301 of fig. 3 is a so-called full-bridge module 301. The full-bridge module 301 is characterized in that, when the four electronic switching elements between the (current) first module terminal 212 and the (current) second module terminal 315 are actuated in each case, a positive voltage of the energy storage device 210, a negative voltage of the energy storage device 210 or a voltage with a value of zero (zero voltage) can optionally be output. Thus, the polarity of the output voltage can be reversed by means of the full bridge module 301. The current transformer 1 can have either only the half-bridge module 201, only the full-bridge module 301, or also the half-bridge module 201 and the full-bridge module 301. A large current flows through the current transformer via the first module terminal 212 and the second module terminals 215, 315.
In the exemplary embodiment of the module 301, in addition to the energy storage device 210, the first electronic switching element 202, the second electronic switching element 206, the first freewheeling diode 204 and the second freewheeling diode 208, the third electronic switching element 302, the fourth electronic switching element 306, the third freewheeling diode 304 and the fourth freewheeling diode 308 are also cooled by means of the coolant 70 of the coolant circuit 72.
An embodiment of a high voltage direct current transmission installation 401 is schematically shown in fig. 4. The hvdc transmission installation 401 has two converters 1, as shown in fig. 1. The two converters 1 are electrically connected to each other on the dc voltage side via a high voltage dc connection 405. In this case, the two positive dc voltage terminals 16 of the converter 1 are electrically connected to one another by means of a first high-voltage dc line 405 a; the two negative dc voltage terminals 17 of the two converters 1 are electrically connected to each other by means of a second high-voltage dc line 405 b. By means of such a high voltage direct current transmission facility 401, electrical energy can be transmitted remotely; the high voltage dc connection 405 then has a corresponding length.
In fig. 5, an exemplary embodiment of a current transformer 501 is shown, which is a reactive power compensator 501. The current transformer 501 has only three phase module branches 11, 18 and 27, which form the three phase modules of the current transformer. The number of phase modules corresponds to the number of phases of the ac grid 511 to which the converter 501 is connected.
The three phase modules 11, 18 and 27 are connected to one another in a delta manner, i.e. the three phase modules 11, 18 and 27 are connected in a delta circuit. Each corner point of the delta circuit is electrically connected to a phase line 515, 517 and 519 of the three-phase ac power network 511. (the three phase modules can also be connected in a star circuit in place of the delta circuit in another embodiment.) the converter 501 can supply reactive power to the ac grid 511 or extract reactive power from the ac grid 511.
Fig. 6 shows a method for cooling at least one electrical energy storage device of a converter, again with the aid of a flow diagram.
Method step 602:
Method step 604:
absorbing waste heat of energy storage device 210 of module 1_1 by coolant 70
Method step 606 (optional):
absorption of waste heat of the switching elements 202, 206, 302, 306 of the modules 1_1, … …, 6_ n by the coolant 70
Method step 608:
carrying away waste heat to the heat exchanger 56 by means of the coolant 70
A converter having a plurality of modules and a method for cooling energy storage devices of the modules of the converter are described. In this case, the energy storage device of the module (for example, the capacitor of the module) is cooled by means of a liquid coolant (liquid cooling). That is to say, the active cooling of the energy storage device takes place by means of a liquid coolant. The cooling of the energy storage device is preferably carried out by means of the same liquid coolant, by means of which the switching elements of the module are also cooled. Liquid cooling of the energy storage device yields a series of advantages:
energy storage devices (e.g. capacitors) with larger energy/power densities can be used.
The convective distance between the electrical energy storage devices is not necessary or only minimally required. This increases the packing density of the energy storage device in the converter.
Significantly simplifying the air conditioning of the building in which the converter is present (e.g. converter hall) (cost advantage).
-increasing the service life of the energy storage device.
Claims (11)
1. Converter (1) having a plurality of modules, each having at least two electronic switching elements (202, 206) and an electrical energy storage device (210), characterized in that the energy storage devices are liquid-cooled energy storage devices (210),
wherein the converter (1) has a cooling device (50) with a liquid coolant (70), and
wherein the cooling device (50) has a coolant pump (54) and a heat exchanger (56).
2. The current transformer of claim 1,
it is characterized in that the preparation method is characterized in that,
-the energy storage device (210) is thermally coupled with the coolant (70).
3. The current transformer of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the energy storage device (210) is thermally coupled to the coolant (70), wherein the energy storage device (210) is provided with a cooling body, and the cooling body is thermally coupled to the coolant (70).
4. The current transformer of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the electronic switching elements are liquid-cooled electronic switching elements (202, 206).
5. The current transformer of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the electronic switching elements (202, 206) are thermally coupled to the coolant (70).
6. The current transformer of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the electronic switching element (202, 206) is thermally coupled to the coolant (70), wherein the electronic switching element (202, 206) is provided with a cooling body, and the cooling body is thermally coupled to the coolant (70).
7. The current transformer of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the cooling device (50) has a coolant circuit (72) for cooling the energy storage device (210).
8. The current transformer of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
the energy storage device is a capacitor (210).
9. The current transformer of claim 1 or 2,
it is characterized in that the preparation method is characterized in that,
two of the electronic switching elements (202, 206) of the module are arranged in a half-bridge circuit, or
The modules each have two of the electronic switching elements (202, 206) and two further electronic switching elements (302, 306), wherein the two electronic switching elements (202, 206) and the two further electronic switching elements (302, 306) are arranged in a full bridge circuit.
10. A high voltage direct current transmission installation (401) with a converter (1) according to any one of claims 1 to 9.
11. A reactive power compensation installation (501) with a converter according to any of claims 1 to 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2016/079006 WO2018095552A1 (en) | 2016-11-28 | 2016-11-28 | Power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211909480U true CN211909480U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201690001821.XU Active CN211909480U (en) | 2016-11-28 | 2016-11-28 | Converter, high-voltage direct current transmission facility and reactive power compensation facility |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN211909480U (en) |
| DE (1) | DE212016000296U1 (en) |
| WO (1) | WO2018095552A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018231810A1 (en) | 2017-06-12 | 2018-12-20 | Tae Technologies, Inc. | Multi-level multi-quadrant hysteresis current controllers and methods for control thereof |
| MX2019015144A (en) | 2017-06-16 | 2020-02-17 | Tae Tech Inc | Multi-level hysteresis voltage controllers for voltage modulators and methods for control thereof. |
| KR20200135399A (en) | 2018-03-22 | 2020-12-02 | 티에이이 테크놀로지스, 인크. | Systems and methods for power management and control |
| BR112021019068A2 (en) | 2019-03-29 | 2021-11-30 | Tae Tech Inc | Module-based power systems having converter-source modules and methods related thereto |
| US11424619B2 (en) * | 2019-04-23 | 2022-08-23 | Siemens Energy Global GmbH & Co. KG | Arrangement having a converter |
| EP3780366A1 (en) | 2019-08-13 | 2021-02-17 | Vestas Wind Systems A/S | Dc chopper for mmc cell with integrated chopper resistor |
| CN110474551A (en) * | 2019-08-28 | 2019-11-19 | 南京南瑞继保电气有限公司 | Control method is moved back in a kind of submodule throwing of modularization multi-level converter |
| CN110808604B (en) * | 2019-11-18 | 2020-09-25 | 广东电网有限责任公司 | Three-port energy control device based on MMC structure |
| CA3178859A1 (en) * | 2020-04-14 | 2021-10-21 | Tae Technologies, Inc. | Modular cascaded energy systems with a cooling apparatus and with replaceable energy source capability |
| US11897347B2 (en) | 2020-04-14 | 2024-02-13 | Tae Technologies, Inc. | Systems, devices, and methods for charging and discharging module-based cascaded energy systems |
| WO2021231759A1 (en) | 2020-05-14 | 2021-11-18 | Tae Technologies, Inc. | Systems, devices, and methods for rail-based and other electric vehicles with modular cascaded energy systems |
| EP4218114A1 (en) | 2020-09-28 | 2023-08-02 | TAE Technologies, Inc. | Multi-phase module-based energy system frameworks and methods related thereto |
| MX2023003716A (en) | 2020-09-30 | 2023-06-16 | Tae Tech Inc | Systems, devices, and methods for intraphase and interphase balancing in module-based cascaded energy systems. |
| WO2023283260A1 (en) | 2021-07-07 | 2023-01-12 | Tae Technologies, Inc. | Systems, devices, and methods for module-based cascaded energy systems configured to interface with renewable energy sources |
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| US6031751A (en) * | 1998-01-20 | 2000-02-29 | Reliance Electric Industrial Company | Small volume heat sink/electronic assembly |
| DE102009043181A1 (en) * | 2009-09-26 | 2011-04-07 | Semikron Elektronik Gmbh & Co. Kg | Converter arrangement |
| FI124731B (en) * | 2009-12-18 | 2014-12-31 | Vacon Oyj | Arrangement in a liquid cooler |
| DE102011006988B4 (en) * | 2011-04-07 | 2021-09-30 | Siemens Aktiengesellschaft | Two-part converter cell |
| EP2825009B8 (en) * | 2013-07-09 | 2016-11-23 | ABB Schweiz AG | Electric converter with compact module arrangement for subsea applications |
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| DE212016000296U1 (en) | 2019-06-28 |
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