CN212909249U

CN212909249U - Intermediate frequency power supply

Info

Publication number: CN212909249U
Application number: CN202020926109.9U
Authority: CN
Inventors: 胡海鹏; 陈敬东; 朱锡辉; 刘雪姣
Original assignee: Nanchang Kangfu New Energy Technology Co ltd
Current assignee: Nanchang Kangfu New Energy Technology Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-04-06
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses an intermediate frequency power supply, which belongs to the field of generators and comprises a frame, a stator core with a winding and a rotor rotationally matched with the frame; the stator core with the winding is provided with a motor stator coil and a generator stator coil; the rotor is provided with a motor rotor coil and a generator rotor coil; the motor stator coils are energized to drive the rotor to rotate such that the generator stator coils produce electrical energy. The motor and the generator share a stator core and a rotor core, so that the structure is compact; can conveniently turn into the intermediate frequency power supply of needs with the commercial power, convenient to use, and can also regard as the motor to use alone when need not changing the power.

Description

Intermediate frequency power supply

Technical Field

The utility model relates to a generator field especially relates to an intermediate frequency power supply.

Background

The 400Hz medium-frequency power supply is suitable for production lines, is used as a debugging test power supply, and can also be used for centralized power supply of plants and laboratories. The structure of the medium-frequency power supply mainly comprises a diesel engine, a medium-frequency generator and a bottom frame, and a motor, a medium-frequency generator and a bottom frame. The diesel engine, the generator and the underframe structure have large noise and large volume to occupy space. The motor, the generator and the underframe are large in size.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem of providing an intermediate frequency power supply which has low noise, small volume and light weight; the utility model has the advantages of can conveniently convert the commercial power into intermediate frequency power, and can use as the motor alone.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an intermediate frequency power supply, which comprises a base, a stator core with a winding and a rotor rotationally matched with the base; the stator core with the winding is provided with a motor stator coil and a generator stator coil; the rotor is provided with a motor rotor coil and a generator rotor coil; the motor stator coils are energized to drive the rotor to rotate such that the generator stator coils produce electrical energy. The motor and the generator share a stator core and a rotor core, so that the structure is compact; can conveniently turn into the intermediate frequency power supply of needs with the commercial power, convenient to use, and can also regard as the motor to use alone when need not changing the power.

The utility model discloses preferred technical scheme lies in, still including being fixed in exciter stator on the frame, the output electric connection of band winding stator core has automatic voltage regulator, automatic voltage regulator with exciter stator electric connection. The generator can automatically and effectively control the output voltage of the generator when generating electricity.

The utility model discloses preferred technical scheme lies in, the rotor still includes the main shaft, be provided with on the main shaft with exciter stator complex exciter rotor, exciter rotor electric connection has rotary rectifier, rotary rectifier with generator rotor coil electric connection. The exciter provides excitation.

The utility model discloses preferred technical scheme lies in, generator rotor coil number of poles is 8 times of motor rotor coil number of poles. The pole number of the rotor coil of the generator and the pole number of the rotor coil of the motor are positioned on the same main shaft, so that 50HZ of the mains supply can be converted into a 400HZ intermediate frequency power supply.

The utility model discloses preferred technical scheme lies in, the rotor still includes rotor core, motor rotor coil twine in rotor core's inlayer, generator rotor coil twine in rotor core's skin. The rotor coils of the motor form a squirrel-cage structure by using parallel rings. The rotor of the generator can be conveniently off-line, the rotor coil of the motor is off-line firstly, and the rotor coil of the motor forms a squirrel-cage structure by using parallel rings.

The utility model discloses preferred technical scheme lies in, the lateral wall top of frame is provided with the generator box, automatic voltage regulator is located in the generator box.

The utility model has the advantages that:

Drawings

Fig. 1 is a schematic view of an overall structure of an intermediate frequency power supply according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a stator segment configuration provided in an embodiment of the present invention;

fig. 3 is a schematic diagram of a medium frequency power supply according to an embodiment of the present invention;

fig. 4 is a schematic view of a stator core with windings provided in an embodiment of the present invention;

FIG. 5 is a schematic view of a rotor section provided in an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a stator core with windings according to an embodiment of the present invention;

in the figure:

1. an exciter stator; 2. a rotating rectifier; 3. a rotor; 4. a generator box body; 5. an exciter rotor; 6. a machine base; 7. a stator core with windings; 8. a stator core; 9. a motor stator coil; 10. a generator stator coil; 11. a motor rotor coil; 12. a generator rotor coil; 13. a rotor core; 14. A main shaft; 15. an automatic voltage regulator.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-6, the intermediate frequency power supply provided in this embodiment includes a base 6, a stator core 8 with a winding, and a rotor 3 rotatably engaged with the base 6; the stator core 8 with the winding is provided with a motor stator coil 9 and a generator stator coil 10; the rotor 3 is provided with a motor rotor coil 11 and a generator rotor coil 12; the motor stator coils 9 are energized to drive the rotor 3 to rotate so that the generator stator coils 10 generate electrical energy. The motor and the generator share a stator core 8 and a rotor core 13, so that the structure is compact; can conveniently turn into the intermediate frequency power supply of needs with the commercial power, convenient to use, and can also regard as the motor to use alone when need not changing the power. When the motor stator coil 9 is electrified, the motor rotor coil 11 and the rotor core 13 can be driven to rotate, so that the generator rotor coil 12 rotates, the generator stator coil 10 generates current, the frequency of an output power supply can be changed by changing the number of poles of the generator and the motor, and the commercial power can be conveniently converted into a required intermediate frequency power supply.

In order to conveniently control the output voltage to be maintained at a stable value, the permanent magnet synchronous motor further comprises an exciter stator 1 fixed on the base 6, an automatic voltage regulator 15 is electrically connected with the output end of the stator core with winding 8, and the automatic voltage regulator 15 is electrically connected with the exciter stator 1. The automatic voltage regulator 15 is connected to the UV terminal or UN terminal of the output terminal of the wound stator core 8. Preferably, a generator box 4 is arranged above the outer side wall of the machine base 6, and the automatic voltage regulator 15 is positioned in the generator box 4. The generator can automatically and effectively control the output voltage of the generator when generating electricity.

Further, the rotor 3 further includes a main shaft 14, an exciter rotor 5 matched with the exciter stator 1 is disposed on the main shaft 14, a rotating rectifier 2 is electrically connected to the exciter rotor 5, and the rotating rectifier 2 is electrically connected to the generator rotor coil 12. The exciter provides excitation.

Preferably, the number of poles of the generator rotor coil 12 is 8 times the number of poles of the motor rotor coil 11. The number of poles of the generator rotor coil 12 and the number of poles of the motor rotor coil 11 are located on the same main shaft 14, so that the commercial power 50HZ can be converted into a 400HZ intermediate frequency power supply.

In order to facilitate the production and processing, the rotor 3 further includes a rotor core 13, the motor rotor coil 11 is wound on an inner layer of the rotor core 13, and the generator rotor coil 12 is wound on an outer layer of the rotor core 13. The motor rotor coil 11 forms a squirrel cage structure by using a parallel ring. The generator rotor 3 can be conveniently taken off the line, the motor rotor coil 11 is taken off the line firstly, and the motor rotor coil 11 forms a squirrel cage structure by using parallel rings. So that the structure is small and the generator rotor coil 12 can be conveniently installed after the installation of the motor rotor coil 11.

The principle is as follows: the power is supplied to the stator coil 9 of the motor, the rotor 3 rotates, depending on the residual magnetic voltage of the motor (if the permanent magnet excitation mode is adopted, the permanent magnet machine provides voltage), the exciting current is provided to the exciter stator 1 after rectification, the voltage of the exciter rotor 5 is gradually increased, the alternating voltage is sent to the magnetic field of the main machine rotor 3 after being rectified by the rotary rectifier 2, the main generator establishes voltage, and when the rotating speed is close to a rated value, the automatic voltage regulator 15 enables the voltage of the generator to rapidly increase and be stabilized at the rated value. In order to make the motor generate 400Hz three-phase alternating current, the number of poles of the generator is 8 times of the number of poles of the motor according to the rotating speed of 60. If the motor is 2P, the generator is 16P. For example, the medium frequency power supply is 400Hz, the power is 50kW, the number of stator slots is 48, and the number of rotor 3 slots is 40. The motor is 2 poles and the generator is 16 poles.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. An intermediate frequency power supply comprises a base (6), a stator core (8) with a winding and a rotor (3) which is in running fit with the base (6); the method is characterized in that:

the stator core (8) with the winding is provided with a motor stator coil (9) and a generator stator coil (10); the rotor is provided with a motor rotor coil (11) and a generator rotor coil (12); the motor stator coil (9) is energized to drive the rotor to rotate so that the generator stator coil (10) generates electrical energy.

2. The intermediate frequency power supply of claim 1, wherein:

the winding machine is characterized by further comprising an exciter stator (1) fixed on the machine base (6), the output end of the stator core (8) with the winding is electrically connected with an automatic voltage regulator (15), and the automatic voltage regulator (15) is electrically connected with the exciter stator (1).

3. The intermediate frequency power supply of claim 2, wherein:

the rotor further comprises a main shaft (14), an exciter rotor (5) matched with the exciter stator (1) is arranged on the main shaft (14), a rotary rectifier (2) is electrically connected to the exciter rotor (5), and the rotary rectifier (2) is electrically connected with the generator rotor coil (12).

4. The intermediate frequency power supply of claim 1, wherein:

the number of poles of the generator rotor coil (12) is 8 times that of the motor rotor coil (11).

5. The intermediate frequency power supply of claim 1, wherein:

the rotor further comprises a rotor core (13), the motor rotor coil (11) is wound on the inner layer of the rotor core (13), and the generator rotor coil (12) is wound on the outer layer of the rotor core (13).

6. The IF power supply of claim 5, wherein:

the rotor coils (11) of the motor form a squirrel-cage structure by using parallel rings.

7. The intermediate frequency power supply of claim 2, wherein:

a generator box body (4) is arranged above the outer side wall of the engine base (6), and the automatic voltage regulator (15) is located in the generator box body (4).