KR101796864B1 - Apparatus for modularized superconducting power generation using modulariztion of field coil - Google Patents

Abstract

The present invention relates to a modularized superconducting power generation apparatus using modularization of field coil. The superconducting power generation apparatus according to an embodiment of the present invention comprises: a plurality of rotor modules modularized with superconducting field coil, each of which has different wound superconducting field coil, and structurally separating the modularized superconducting field coil; a plurality of module cooling units composed of a plurality of cooling containers, wherein each of the rotator modules is individually held, and coolers each of which cools each of the rotator modules held in each of the cooling containers; a rotator body separating the plurality of module cooling units, where the plurality of rotator modules are included respectively, from each other to be installed and rotating the plurality of module cooling units; a stator module composed of armature coil adjacent to surround the plurality of module cooling units and a stator body installed to get the armature coil to be surrounded; and module power sources connected to the superconducting field coil of the rotator modules respectively to supply current individually. The present invention applies the module cooling units and the module power sources to the plurality of rotator modules to enable individual operation to be performed, thereby being capable of assessing performance of the superconducting coil before constructing the superconducting power generation system and easily performing repair and exchange operation by module when problems occur at the superconducting coil.

Description

[0001] MODULARIZED SUPERCONDUCTING POWER GENERATION USING MODULARIZATION OF FIELD COIL [0002]

The present invention relates to a modularized superconducting power generator using modularization of a field coil, and more particularly to a modularized superconducting field coil having a plurality of superconducting field coils, wherein the superconducting field coils are modularized into different superconducting field coils, The performance of the coil can be evaluated before manufacturing the superconducting power generator by enabling the individual operation by applying the module freezing part and the module power part to the rotor module, and it is possible to easily repair or replace the module when a problem occurs in the coil To a modularized superconducting power generator using modularization of field coils.

Superconductors having no electrical resistance at a cryogenic temperature are advantageously applied to various fields with advantages of high magnetic field, low loss and miniaturization compared with conventional phase conductors (for example, copper). Superconductors with these advantages have been continuously studied in applications to the field of power devices. In particular, superconductors are used in many fields such as generators, motors, cables, DC reactors, and current limiting devices.

As superconducting technology advances, superconducting applications become increasingly large. As a result, superconducting coils are also becoming high magnetic fields and large currents.

However, since superconducting coils have a high magnetic field and a large current, they have a disadvantage in that they are vulnerable to a force generated by a coil or an external force. Therefore, it is possible to test the coil manufactured before applying the superconducting coil to the application equipment, and to increase the reliability of the superconducting device, which can be easily operated and maintained even after the superconducting coil is applied to the application device It is becoming necessary.

In order to improve the stability and reliability of such a superconducting coil, there is a need to modularize the superconducting coil. When a superconducting coil is modularized, each coil must be supplied with current and cooled to a cryogenic temperature. Therefore, it is necessary to apply a power supply and a cooling system to an efficient modularized superconducting coil.

Patent Document 1: Japanese Patent Application Laid-Open No. 10-2010-0069082 (June 24, 2010)

Embodiments of the present invention provide a method and system for applying a modularized superconducting field coil to a plurality of rotor modules in which the superconducting field coil is modularized with different superconducting field coils and the modular superconducting field coil is structurally separated, A modularized superconducting power generator using modularization of field coils capable of evaluating the performance of the superconducting coils before fabrication of the superconducting power generation system and enabling easy repair or replacement of each module when problems occur in the superconducting coils ≪ / RTI >

Accordingly, the embodiments of the present invention can test the superconducting coil prior to the fabrication of the superconducting power generation system, and facilitate the maintenance and replacement of the superconducting coil, thereby increasing the reliability of the superconducting device requiring the superconducting coil The present invention provides a modularized superconducting power generator using modularization of a field coil.

According to a first aspect of the present invention there is provided a rotor assembly comprising a plurality of rotor modules in which the wound superconducting field coil is modularized into different superconducting field coils and the modular superconducting field coil is structurally separated; A plurality of module freezers comprising a plurality of cooling containers in which the respective rotor modules are individually housed, and a refrigerator that individually cools each of the rotor modules stored in each of the cooling containers; A plurality of module refrigeration units each including a plurality of rotor modules, and a rotor body installed separately for each module and rotating the plurality of module refrigeration units; A stator module comprising an armature coil adjacently surrounding the plurality of module freezers, and a stator body installed so as to surround the armature coils; And a module power supply unit connected to each of the superconducting field coils of each of the rotor modules to separately supply the currents to the superconducting field coils.

The plurality of module freezing sections may make the inside of the cooling container made of the cryostat into a vacuum state and cool each cooling container individually.

The refrigerator may be attached to the front, back, or bottom of the cooling vessel.

The module power supply unit is connected to each of the superconducting field coils of the respective rotor modules to separately supply the currents, and the current can be sequentially supplied to each of the modular superconducting field coils.

The rotor module may further include a coil supporter for supporting an upper end or a lower end of the superconducting field coil in the cooling container.

The superconducting field coil in which the failure occurs in the modularized superconducting field coil can be replaced or the failed part can be repaired in the state where the superconducting power generation is performed.

Embodiments of the present invention provide a method and system for applying a modularized superconducting field coil to a plurality of rotor modules in which the superconducting field coil is modularized with different superconducting field coils and the modular superconducting field coil is structurally separated, By enabling the operation, the performance of the superconducting coil can be evaluated before fabrication of the superconducting power generation system, and it can be easily repaired or replaced for each module when a problem occurs in the superconducting coil.

Embodiments of the present invention reduce the inductance of a superconducting field coil through modularization of a superconducting field coil, thereby reducing the time constant and increasing the induction speed of the current.

Embodiments of the present invention can modularize a superconducting field coil and store it in a cooling container that is smaller than a conventional cooling container, so that the inside of the cryostat accommodating the superconducting field coil can be easily vacuumed.

Embodiments of the present invention can improve the cooling rate and the stability of the entire system by cooling the modular superconducting field coil, respectively.

Embodiments of the present invention can easily fabricate superconducting applications by modularizing the superconducting coil.

Embodiments of the present invention can test the performance of superconducting field coils before fabricating superconducting applications.

Embodiments of the present invention may operate the modular superconducting field coils individually, so that even if a problem occurs in any one superconducting field coil, it may not affect other superconducting field coils.

Embodiments of the present invention can facilitate repair and replacement of a superconducting field coil in which an accident occurs when an accident occurs in the superconducting field coil.

Embodiments of the present invention can increase the reliability of superconducting devices that require superconducting field coils by testing modular superconducting field coils prior to fabrication of the superconducting system and easily maintaining and replacing the modular superconducting field coils .

Embodiments of the present invention can reduce the maintenance cost by re-cooling the superconducting field coil removed due to a fault and re-using the superconducting field coil after repairing the fault site or confirming the problem through re-cooling and power supply have.

FIGS. 1A and 1B are perspective views of a modular superconducting power generator and a plurality of modularized rotor modules using modularization of a field coil according to an embodiment of the present invention. FIG.
2A to 2C are internal configuration diagrams of a modularized rotor module in a superconducting power generator according to an embodiment of the present invention.
FIGS. 3A to 3C are structural diagrams of a plurality of rotor modules, a module power source unit, and a module freezing unit in the superconducting power generator according to the embodiment of the present invention.
4A to 4D are graphs showing results of analysis of normal operation and output characteristics of a module coil in an accident state in the superconducting power generator according to the embodiment of the present invention.
FIG. 5 is a graph illustrating an analysis of output characteristics before and after an accident in a superconducting power generator according to an embodiment of the present invention. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention. In describing the embodiments of the present invention, description of technical contents which are well known in the art to which the present invention belongs and which are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given to different drawings. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that it has the same function in different embodiments, and the function of each component is different from that of the corresponding embodiment Based on the description of each component in FIG.

FIGS. 1A and 1B are perspective views of a modular superconducting power generator and a plurality of modularized rotor modules using modularization of a field coil according to an embodiment of the present invention. FIG.

2A to 2C are internal configuration diagrams of a modularized rotor module in a superconducting power generator according to an embodiment of the present invention.

1A and 1B and 2A to 2C, a modularized superconducting power generating apparatus 100 using modularization of a field coil according to an embodiment of the present invention includes a plurality of rotor modules 110, A module body 120, a rotor body 111, a module power supply unit 130, and a module freezing unit 140. Here, the modularized superconducting power generation unit will be referred to as including a plurality of rotor modules 110 and a rotor body 111.

Hereinafter, the specific configuration and operation of the respective components of the modularized superconducting power generator 100 using the modularization of the field coil according to the embodiment of the present invention shown in FIGS. 1A, 1B and 2A to 2C will be described.

The superconducting power generation apparatus 100 includes a stator module 120 and a plurality of modularized rotor modules 110 and performs a superconducting power generation by rotating a plurality of the rotor modules 110.

In the plurality of rotor modules 110, the wound superconducting field coil 112 is modularized into different superconducting field coils. The modular superconducting field coil 112 is structurally separated.

The plurality of module freezing sections 140 include a plurality of cooling containers 142 in which the respective rotor modules are individually housed, and a freezer 141 (not shown) for individually cooling the respective rotor modules housed in the respective cooling containers ).

The rotor may be referred to as including a plurality of rotor modules 110 each having rotor field coils and a rotor body 111 surrounding the lower ends of the plurality of rotor modules 110.

The rotor body 111 is provided with a plurality of module freezing units 140 each including a plurality of rotor modules 110, The rotor body (111) rotates a plurality of module freezing parts (140) each including a plurality of rotor modules (110).

The rotor body 111 supports the plurality of rotor modules 110 and rotates. In the plurality of rotor modules 110, the rotor modules 110 are circularly adjacent to each other. A stator module 120 is located outside the stator module 120 and a plurality of rotor modules 110 adjacent to each other are located at a lower end portion of the stator module 120.

Here, the stator module 120 includes an armature coil 121 and a stator body 122 surrounding the outer side of the armature coil 121.

As shown in FIG. 1A, a plurality of rotor modules 110 are adjacent to a lower end of the stator module 120 in a front view of the superconducting power generator 100.

Further, the module power source unit 130 attached to the plurality of rotor modules 110 is also adjacent to the lower end of the stator body 122. [ Accordingly, when the plurality of rotor modules 110 are rotated, the pump driving unit 132 of the module power supply unit 130 adjacent to the lower end of the stator body 122 rotates.

The stator body 122 corresponding to the outer housing of the stator module 120 includes an armature coil 121 therein. The stator body 122 may have an external shielding layer formed thereon.

On the other hand, as shown in Figs. 2A to 2C, the modular superconducting field coil 112 must be cooled to a cryogenic temperature, and current must be supplied. To this end, the superconducting power generator 100 according to the embodiment of the present invention may be configured such that the module power source 130 is individually applied to each of the superconducting field coils 112 of the modular superconducting power generator, and each superconducting field coil 112 is individually Lt; / RTI >

2A to 2C, the modularized superconducting power generation unit is connected to the module power supply unit 130 and the module freezing unit 140, respectively.

The superconducting power generation unit includes a plurality of rotor modules 110 adjacent to the stator module 120 and having a modular superconducting field coil 112 adjacent to the stator module 120 having the armature coils 121, .

Modulation of the superconducting field coil 112 in accordance with embodiments of the present invention, in conjunction with the modularization of the superconducting field coil 112, enables separate power supply and cooling operations to the superconducting field coil 112.

The superconducting field coil 112 is modularized and wound by a coil to be manufactured by the user. Each of the wound superconducting field coils 112 is housed in a cooling container (e.g., cryostat) 142, which is a vacuum container for cryogenic cooling, and is cooled to a cryogenic temperature.

The superconducting power generator 100 separately operates the modular superconducting field coil 112 by connecting the module power supply 130 to each superconducting field coil 112 in order to supply current to the superconducting field coil 112 I will. The superconducting power generator 100 modularizes the superconducting field coil 112 to perform a performance test of each coil prior to the fabrication of the entire superconducting power generator system, thereby solving the problems that occur in advance. Also, when a problem occurs in the superconducting field coil 112 during operation of the superconducting device, the superconducting power generator 100 can reduce the influence on the entire system because each superconducting field coil 112 operates individually. The superconducting power generator 100 can easily maintain or replace only the specific rotor module 110 having the superconducting field coil 112 in which the problematic superconducting field coil 112 is installed.

The module power supply unit 130 supplies power to the rotor module 110 individually. The module power supply unit 130 includes a flux pump 131 for generating an induction current using a rotating system for each rotor module 110. The module power supply unit 130 separately supplies the induction current generated by the rotation of the flux pump 131 to the rotor module 110.

Here, the module power supply unit 130 including the flux pump 131 will be described as an example. However, the present invention is not limited to the configuration including the flux pump 131, and may include a configuration capable of separately supplying power to the rotor module 110 Lt; / RTI >

Here, the flux pump 131 is located at the bottom of the circular shape of the stator module 120 and attached to the rotor module 110. The flux pump 131 rotates in accordance with the rotational force generated when the plurality of rotor modules 110 are rotationally driven.

The module power supply unit 130 may further include a pump driving unit 132 for rotating the flux pump 131 and the flux pump 131 as an example of rotational driving of the flux pump 131. [

The pump driving unit 132 is in contact with the lower end of the stator module 120 and is in contact with the flux pump 131. The pump driving unit 132 rotates the flux pump 131 using the rotational force generated when the plurality of rotor modules 110 are rotationally driven.

2A to 2C, the module freezing part 140 may be attached to the front surface, the rear surface, or the bottom surface of the cooling container 142. As shown in FIGS.

The module freezing part 140 includes a cooling container 142 and a freezer 141. [ Here, the module freezing unit 140 may be implemented as a cryostat that keeps the superconducting field coil 112 at a cryogenic temperature.

Here, the cooling container 142 is a heat-insulating container for housing the rotor module 110 therein. The cooling container 142 is a closed container, and can maintain a vacuum state with the rotor module 110 housed therein.

The module freezing unit 140 makes the interior of the cooling container 142 vacuum before cooling using the vacuum pump. The refrigerator 141 is cooled to a cryogenic temperature by using the refrigerant, and the modularized rotor module 110 can be cooled individually.

The modularization of each superconducting field coil 112 reduces the internal space of the cooling container 142 so that the module freezing part 140 can easily make the inside of the cooling container 142 in a vacuum state. Further, since the cooling container 142 and the freezer 141 are installed in the respective rotor modules 110, the module freezing section 140 can improve the cooling rate. Accordingly, the module freezing unit 140 can improve the stability of the entire superconducting power generator 100 through the individual cooling operation of the superconducting field coils 112.

In addition, the module freezing part 140 may be made in a vacuum state before the inside of the cooling container 142 before the modularized rotor field coil is manufactured and installed in superconducting appliances (not shown). When the rotor module 110 in a vacuum state is installed in a superconducting application device to be installed by a user, the rotor module 110 according to the embodiment of the present invention is operated in a vacuum mode There is an advantage to be able to do.

The amount of heat generated by the conduction and the current lead is removed by applying the flux pump 131 structurally separated from the superconducting field coil 112 to the superconducting power generator 100. Therefore, the refrigerator 141 of the module freezing unit 140 can use a refrigerator having a relatively small capacity as compared with the conventional refrigerator.

The rotor module 110 may further include a coil support (not shown) for supporting the upper and lower ends of the superconducting field coil 112 inside the cooling vessel 142.

3A to 3C are structural diagrams of a plurality of rotor modules and a module freezing section in a superconducting power generator according to an embodiment of the present invention.

As shown in FIGS. 3A to 3C, a plurality of rotor modules 110 according to an embodiment of the present invention are respectively modularized and connected to each other.

The rotor body 111 supports and rotates a plurality of upper rotor modules 110.

Here, the plurality of rotor modules 110 and the rotor body 111 may be connected to each other in a circular shape as shown in FIGS. 1A and 1B.

3A to 3C, a plurality of module freezing sections 140 are attached to the front, back, or bottom surfaces of a plurality of cooling vessels 142, respectively, and are individually housed in a plurality of cooling vessels 142 The superconducting field coil 112 can be cooled.

4A to 4D are graphs showing results of analysis of normal operation and output characteristics of a module coil in an accident state in the superconducting power generator according to the embodiment of the present invention.

As shown in FIGS. 4A and 4B, the output characteristics of the superconducting field coil 112 wound in the plurality of rotor modules 110 in the superconducting power generator 100 are analyzed during normal operation .

In the first case, Case 1 (Case 1: 24 poles), which is a normal operation, shows the output characteristics of all 24 poles operating normally.

As shown in FIGS. 4C and 4D, the output characteristics of a plurality of superconducting field coils 112 wound in a plurality of rotor modules 110 in the superconducting power generator 100 when the coils are in a fault state are analyzed Respectively.

In the second case, Case 2 (23 poles), in which one pole is in an accident state, shows an output characteristic in which one pole is in failure and 23 poles are operating normally.

In the third case, the Case 3 (22 pole), in which two poles are in an accident state, shows an output characteristic in which two poles are in a fault state and a 22 pole is operating normally.

In this manner, the superconducting field coil 112 is structurally separated, so that even if the superconducting field coil 112 is in a failure state, the failure does not affect other superconducting field coils. Therefore, the rotor module 110 made of the modular superconducting field coil 112 can improve the reliability and stability of the superconducting power generator 100.

FIG. 5 is a graph illustrating an analysis of output characteristics before and after an accident in a superconducting power generator according to an embodiment of the present invention. FIG.

As shown in FIG. 5, the output (torque) characteristic before the fault occurrence at which the fault occurred is maintained at 12 MN.m. Specifically, the superconducting power generator 100 maintains a constant torque characteristic of about 12 MN · m while the torque characteristic MN · m gradually increases from 0 second. Here, the superconducting power generator 100 maintains a steady state (24 pole) in a steady state.

On the other hand, the torque characteristic (23 pole_torque) of the superconducting power generator 100 is reduced from 12 MN · m to 11 MN · m after the occurrence of the failure of one pole.

The torque characteristic (20 pole_torque) of the superconducting power generator 100 is reduced from 12 MN · m to 8.3 MN · m after the time of the occurrence of the failure of the four poles.

Thus, when a fault occurs in some of the superconducting field coils 112, the output decreases in proportion to the number of failed superconducting field coils.

However, even if a failure occurs in some of the superconducting field coils 112, the superconducting power generator 100 can continue to develop. Here, even if the output (torque) characteristic at the time of the accident state is lowered in some degree, the output characteristic of the superconducting power generator 100 is not large enough to prevent the power generating function of the superconducting power generator 100 from being performed.

Hereinafter, improvement in operation reliability and stability of the superconducting power generator 100 will be described.

In a typical superconducting generator, each coil is connected in series to provide current to the coil through a single power supply and slip ring, brush, and current leads. When using this current supply method, if a problem occurs in one superconducting coil, the situation that the current can not be supplied to all the coils due to the structure connected in series occurs. Such a superconducting generator will not output power.

On the other hand, the superconducting power generator 100 according to the embodiment of the present invention modulates each of the superconducting field coils 112 and supplies a current to each of the module coils through a flux pump. Then, even if a problem occurs in one superconducting field coil 112, the remaining current is continuously supplied to the other coils. At this time, although the output (torque) of the superconducting power generator 100 is reduced in proportion to the number of failed field coils, it is possible to continuously generate electricity.

Therefore, when the current supply method of a general superconducting generator is used, when a problem occurs in a superconducting coil, the entire power generation system including the cooling system must be stopped. After that, the superconducting coil must be repaired and the coil cooling and power generation started again.

However, the superconducting power generator 100 according to the embodiment of the present invention includes the superconducting field coil 112 having a modular structure in which the coils are separately supplied with current. In this superconducting power generation apparatus 100, even when a problem occurs in the superconducting field coil 112, continuous power generation can be performed. Thereafter, only the superconducting field coil in which the problem occurred during the repair can be removed and replaced with another modular superconducting field coil, so that the device can be operated normally quickly.

Thus, the superconducting field coil removed due to the fault can be reused after repairing the fault site or replacing the superconducting field coil after confirming the problem through re-cooling and power supply. Therefore, the maintenance cost can be reduced in the superconducting power generator 100 according to the embodiment of the present invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Superconducting power generator
110: Rotor module
111: rotor body
112: superconducting field coil
120: stator module
121: armature coil
122: stator body
130: Module power section
131: flux pump
132:
140: Module freezing section
141: refrigerator
142: cooling container

Claims (6)

A plurality of rotor modules in which the wound superconducting field coils are modularized into different superconducting field coils and the modular superconducting field coils are structurally separated;
A plurality of module cooling units each comprising a plurality of cooling modules in which the respective rotor modules are individually housed, and a plurality of refrigeration units that individually cool each of the rotor modules housed in each cooling module;
A plurality of module refrigeration units each including a plurality of rotor modules, and a rotor body installed separately for each module and rotating the plurality of module refrigeration units;
A stator module comprising an armature coil adjacently surrounding the plurality of module freezers, and a stator body installed so as to surround the armature coils; And
And a module power supply unit connected to each of the superconducting field coils of the respective rotor modules for individually supplying current,
A refrigerator and a refrigerator are installed in each of the rotor modules, respectively, and the refrigerator installed in each of the rotor modules individually cools the modular rotor modules,
Wherein the module power supply unit further includes a flux pump and a pump driving unit for generating an induction current using a rotating system for each of the rotor modules,
Wherein the pump driving unit is in contact with a lower end portion of the stator module and engages with the flux pump, rotates the flux pump using a rotational force generated when the plurality of rotor modules is rotationally driven,
The flux pump is disposed at a lower end portion of a circular shape of the stator module and is attached to the rotor module. The flux pump rotates in accordance with the rotational force generated when the plurality of rotor modules are rotationally driven, To the superconducting power generating device. The method according to claim 1,
Wherein the plurality of module freezing sections comprise:
A superconducting power generator in which the interior of a cooling vessel made of cryostats is evacuated and each cooling vessel is cooled individually. The method according to claim 1,
The refrigerator includes:
Wherein the cooling vessel is attached to a front surface, a rear surface, or a bottom surface of the cooling vessel. The method according to claim 1,
The module power supply unit includes:
Wherein each superconducting field coil of each of the rotor modules is connected to each of the superconducting field coils and supplies current to each of the superconducting field coils. The method according to claim 1,
The rotor module
And a coil support portion for supporting an upper end portion or a lower end portion of the superconducting field coil inside the cooling vessel,
The superconducting power generation device further comprising: The method according to claim 1,
The rotor module
A superconducting power generator capable of replacing a failed superconducting field coil among the modular superconducting field coils in a state in which superconducting power generation is performed, or repairing a fault site.

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