KR100557386B1 - Brushless Alternating Current Generating System generating by the Diesel Engine Driving - Google Patents

Abstract

The present invention relates to a brushless alternating current system that uses a diesel engine as a driving source to maximize the efficiency of a diesel engine and generates two different frequencies with one diesel engine.

In particular, by driving the first generator having a six-pole magnetic field stimulation by the power generated from the diesel engine to obtain a primary power source, the primary power source to rotate a motor having four or eight poles, and in the motor By using the generated rotational force to drive a second generator having a two-pole or four-pole field magnetic pole is composed of a configuration to obtain a secondary power source.

As a result, when the diesel engine is driven at 2000 rpm, the first generator generates a power of 100 Hz, and the second generator connected thereto obtains a power of 50 Hz.

In addition, when the rotation speed of the diesel engine rotates at 2400rpm, the first generator generates 120Hz power, and the second generator connected thereto obtains 60Hz power.

 Exciter, generator, diesel engine, electric motor, rotating shaft

Description

Brushless Alternating Current Generating System generating by the Diesel Engine Driving}

1 is a cross-sectional view showing a conventional power generation system.

FIG. 2 is a circuit diagram illustrating a generator system according to FIG. 1.

3 is a cross-sectional view showing a brushless AC power generation system according to the present invention.

4 is a circuit diagram showing a brushless AC power generation system according to the present invention.

5 is a cross-sectional view showing an AC power generation system according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1 diesel engine 7 ... 1st generator

8 ... exciter 12 ... motor

14 ... 2nd generator 31 ... Automatic voltage regulator

33.Rectifier

 The present invention relates to a brushless alternating current system using a diesel engine as a driving source for maximizing the efficiency of a diesel engine and simultaneously obtaining different generation power in a frequency band. In particular, the diesel engine, the first generator, and the exciter are driven on the same axis. In addition, the motor and the second generator is configured to be driven by a separate rotary shaft to the brushless AC power generation system using a diesel engine as a driving source to obtain two high-frequency power by the driving force generated from the diesel engine will be.

A conventional brushless generator system generally known is a generator installed inside the housing 2 while being connected via a diesel engine 1 and a flywheel 3 of the diesel engine 1, as shown in FIG. (7) and the exciter (8), the rotational force driven by the diesel engine (1) on the rotary shaft (9) connected to the flywheel (3) of the diesel engine (1) via a coupling (4) Power is generated by the generator field 6 and the corresponding generator 7.

In addition, a fan 5 and an exciter 8 are provided at one side of the rotation shaft 9, and the housing 2 has a frame 15 supporting the rotation shaft 9 by the bearing 11 at one side. It consists of a configuration that is connected to.

In the brushless generator having the above structure, as shown in FIG. 2, power generated in the exciter 8 is supplied to the field stimulus 34 via the rectifier 33, and is generated by the field stimulus 34. A voltage is generated in the stator winding 36 of.

In addition, the following two methods are used to obtain a voltage having a power supply frequency of 60 Hz in the brushless alternator as described above.

The first method is to configure the number of poles of the generator field to four poles when operating the diesel engine at 1800 rpm, and the second method is to operate the diesel engine at 3600 rpm. There is a method to configure the number of poles of the generator field with two poles.

However, the above method is disadvantageous in that the energy efficiency is low by operating outside the range of 2000 to 2600 rpm, which is the maximum efficiency operating point of the diesel engine.

An object of the present invention is to provide a power source that generates two different frequencies while maximizing the efficiency of a diesel engine, to drive a diesel engine at 2000 rpm and 2600 rpm, the maximum efficiency operating point of the engine, and output of the generator. The frequency is to provide a brushless AC power generation system using a diesel engine as a driving source to obtain a frequency of 100Hz or 120Hz in the first generator, 50Hz or 60Hz in the second generator.

The present invention to solve the above problems, a diesel engine;

A first generator connected to the diesel engine;

An automatic voltage regulator and an exciter for supplying power to the first generator or distributing generated power;

An electric motor driven as a power supply for the first generator; and

Provided is a brushless AC power generation system using a diesel engine including a second generator connected to the same rotation shaft as the electric motor as a driving source.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3 and FIG. 4, the present invention uses the first generator 7 and the power generated by the first generator 7 to be driven by the output of the diesel engine 1 and the diesel engine 1. An automatic voltage regulator 31 for controlling and an electric motor 12 connected to the automatic voltage regulator 31 to be supplied with power, and a second generator 14 connected to and driven integrally with the motor, are provided.

The diesel engine 1 is connected to a flywheel 3 in which one end of a drive shaft connected to the diesel engine is inserted into the housing 2 at one side thereof.

The first generator 7 is mounted inside the housing 2 and is connected to the flywheel 3 and the coupling 4 via a first shaft circuit 9 on one side of the first generator circuit 35. And the first generator circuit 35 is a stator winding 36 installed at an inner circumference of the first power generator 6 connected to the rotary shaft 9 and the housing 2 so as to correspond thereto. Is done.

The first generator 7 is electrically connected to the automatic voltage regulator 31 and supplies power to the electric motor 12 connected thereto, and the automatic voltage regulator 31 is connected to the rectifier 33 to be connected to the first. DC power is supplied to the field magnetic pole of the generator (7).

An excitation circuit 37 having an exciter 8 is installed at one side of the first generator 7 to supply an excitation current to the stator winding of the first generator 7, and the exciter 8. ) Is connected to the automatic voltage regulator 31.

In addition, the rotating shaft 9 is connected to a cover 15 coupled to one side of the housing 2 on one side thereof through a bearing 11, and a cooling fan 5 is installed on one side thereof.

In addition, the auxiliary housing (2a) which is separated from the housing (2) is installed and the cover (15a) is fixed on one side, the rotating shaft (9a) inside the through the auxiliary housing (2a) and the cover (15a) It is installed so as to be rotatable through the bearing 11a.

In addition, the rotary shaft (9a), the motor rotor 13 and the second power generator 16 is integrally spaced apart to rotate, and the inside of the auxiliary housing (2a) corresponding to the motor rotor (13). A stator is installed in the circumferential direction of the side to form the electric motor 12.

In addition, a second generator 14 is installed in the circumferential direction of the inner surface of the auxiliary housing 2a corresponding to the second power generator 16, and the electric motor 12 is connected to the automatic voltage regulator 31 to supply power. The second generator 14 is configured to be connected to an external power supply terminal (not shown).

Meanwhile, in the present invention, as shown in FIG. 5, two generators 7 and 14, an exciter 8 and an electric motor 12 are respectively installed on a rotation shaft 9 installed in one housing 2, respectively. The first generator 7 and the exciter 8 are integrally rotated on the rotary shaft 9, and the second generator 14 and the electric motor 12 are spaced apart from each other on the rotary shaft 9. The bearing 11 is installed to allow its own rotation.

In addition, the electric motor 12 is electrically connected to the first generator 7 and the exciter 8 through the automatic voltage regulator 31 to receive power, and the second generator 14 is an external power terminal. It is made of a configuration that is connected to.

Referring to the operation of the present invention made of the above configuration as follows.

3 to 5, a plurality of power sources having different frequencies can be supplied by a circuit for electromagnetically connecting rotational force generated by a diesel engine to two generators, an exciter and an electric motor.

In addition, voltage and frequency fluctuations caused by load fluctuations of the output stage are controlled by the automatic voltage regulator 31 and the speed regulator of the governor connected to the diesel engine.

The present invention also provides a brushless generator system of a two-generator one-motor which maximizes the efficiency of a diesel engine and obtains a two-power different in frequency band at the same time.

In the split type 2-generator 1-motor brushless alternator system of the present invention, as shown in FIGS. 3 and 4, the first generator 7 and the exciter on the same line as the rotary shaft 9 connected to the diesel engine 1. (8) is driven, the electric motor 12 and the second generator 14 is driven in a separate rotary shaft (9a).

At this time, the power generated in the first generator 7 is supplied to the motor 12 on the separate rotating shaft (9a) to drive the rotating shaft (9a), the motor 12 is the generation of the first generator (7) Generates a rotational force corresponding to the frequency and the number of poles of the electric motor 12, the rotational power of the electric motor 12 drives the second generator 14 which is integrally connected to one side via the rotary shaft 9a to the secondary power source Occurs.

In addition, the integrated two-generator 1 motor brushless alternator system of the present invention, as shown in Figure 5, the first generator (1) on the rotary shaft (9) connected to the diesel engine (1) when driving the diesel engine (1) 7) and exciter 8, electric motor 12 and second generator 14 are provided.

At this time, the first generator 7 and the exciter 8 is fixed to the rotary shaft 9 to rotate integrally, the electric motor 12 and the second generator 14 is self-rotating through the bearing 11 Installed so that it is possible.

The power generated by the first generator 7 is supplied to the electric motor 12 mounted on the same shaft, and the rotational force generated by the motor 12 drives the second generator 14 to supply the secondary power. Occurs.

Hereinafter, the invention will be described in more detail.

3 and 4, the first generator 7 and the exciter 8 are driven on the same axis, and the electric motor 12 and the second generator 14 are driven on separate separate shafts. The rotational force driven by the diesel engine is first transmitted to the first generator 7 and the exciter 8 connected to the coupling 4.

At this time, the power generated from the exciter 8 is supplied to the field magnetic pole 6 of the first generator 7 via a rectifier 33 electrically connected thereto, and the stator of the primary generator by the field magnetic pole Voltage is generated in the winding 36.

The voltage generated by the first generator 7 is supplied to an electric motor 12 installed on a separate shaft, and the electric motor 12 corresponds to the frequency generated by the first generator 7 and the number of poles of the motor. The rotational force is generated, and the rotational force of the electric motor drives the second generator 14 to generate a secondary power source.

At this time, the structure of the second generator 14 may be configured in a permanent magnet field method and an armature excitation method, the number of poles of the field magnetic pole is determined by the relationship with the number of poles of the motor.

Meanwhile, as shown in FIG. 5, the first generator 7, the exciter 8, the electric motor 12, and the second generator 14 are configured to be driven on the same rotation shaft, so that the rotational force driven by the diesel engine is first coupled. It is transmitted to the first generator (7) and the exciter (8) through the rotary shaft (9) connected to (4), wherein the power generated in the exciter (8) is passed through the rectifier (33) ), And a voltage is generated in the stator winding 36 of the first generator by the field magnetic pole 6.

In addition, the voltage generated by the first generator 7 is supplied to the motor 12 mounted on the same shaft, the motor 12 is generated frequency of the first generator 7 and the number of poles of the motor 12 By generating a corresponding rotation force, and the rotation force of the electric motor 12 drives the second generator 14 to generate a secondary power source.

In addition, the structure of the second generator 14 may be configured in a permanent magnet field method and an armature excitation method, the number of poles of the field magnetic pole is determined by the relationship with the number of poles of the motor.

In addition, the second generator 14 and the electric motor 12 are fixed on the rotary shaft 9 via a bearing 11 to rotate with a separate rotary force separated from the rotary shaft 9.

In addition, the operation of the automatic voltage regulator 31 is first, the exciter 8 is rotated by the rotational force generated by the diesel engine is magnetized by the permanent magnet, the exciter circuit 32 to the exciter by the magnetizing current And a rectifier 33 is installed to supply the field current of the first generator 7 to form a first generator circuit 35 for generating a required direct current, and the primary power source of the first generator. The second generator circuit 39 on the same axis is formed by the electric motor circuit 37 driven by the secondary motor.

[Equation]

Where N is rotational speed (rpm), f is frequency (Hz), and P is pole number.

EXAMPLE

The field magnetic pole of the first generator of the present invention is six poles, the number of poles of the motor is determined in relation to the field magnetic pole of the secondary generator, the pole number of the secondary generator is four poles, If the number of poles is four poles, it consists of two poles.

The operating speed of the diesel engine of the present invention is operated in the vicinity of 2000 rpm to 2600 rpm, which is the maximum efficiency operating point of the engine.

When the diesel engine rotates at 2000 rpm, the frequency generated by the primary generator is 100 Hz and the secondary generator generates 50 Hz.

In addition, when the diesel engine speed is rotated at 2400 (rpm), the generation frequency of the primary generator is 120 (Hz), the generation frequency of the secondary generator generates 60 (Hz).

The alternator system driven by the diesel engine of the present invention can obtain power of two different frequencies of good quality by using one diesel engine mechanical driving force.

In addition, the system is more robust than the one used for power conversion circuits such as inverters for frequency conversion, less maintenance and maintenance costs, less voltage fluctuations for load fluctuations, and maximum power conversion efficiency.

In addition, by operating within the range 2000 ~ 2600rpm capable of complete combustion of the diesel engine, it is possible to maximize the energy conversion efficiency of the engine, as well as to obtain environmentally friendly power generation by full combustion.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as provided by the following claims. I would like to clarify that those who have knowledge of this can easily know.

Claims (6)

The first generator and the exciter are respectively installed on the rotating shaft which is installed to be rotatable in the housing by receiving the driving force of the diesel engine, and the motor and the second on the auxiliary rotating shaft which are rotatably installed in a separate auxiliary housing separate from the housing. A generator is installed, and an automatic voltage regulator is installed to connect an exciter for supplying an excitation current to the first generator while relaying power from the first generator to the motor, and a rectifier for supplying a DC current to the first generator. Brushless alternating current system using a diesel engine as a driving source. The method of claim 1, wherein the field magnetic pole of the first generator is composed of six poles, the number of poles of the electric motor according to the eight poles, the field magnetic pole of the second generator is characterized in that the four poles drive source Brushless alternating current system. The method of claim 1, wherein the field magnetic pole of the primary generator is composed of six poles, the number of poles of the electric motor according to the four poles, the field magnetic pole of the second generator is characterized in that it is formed of two poles Brushless alternating current system. A first generator, an exciter, an electric motor, and a second generator are respectively installed on a rotating shaft which is installed to be rotatable in the housing by receiving the driving force of the diesel engine, and the first generator and the exciter are integrally driven with the rotating shaft. And the second generator is installed to be capable of self-rotating through a bearing on the rotating shaft, and an automatic voltage regulator is installed to connect an exciter for supplying an excitation current to the first generator while relaying power from the first generator to the motor. Brushless AC power generation system using a diesel engine having a rectifier for supplying a DC current to the first generator. 5. The diesel engine according to claim 4, wherein the field magnetic pole of the first generator comprises six poles, the number of poles of the electric motor is eight poles, and the field magnetic pole of the second generator is formed of four poles. Brushless alternating current system. The method of claim 4, wherein the field magnetic pole of the primary generator is composed of six poles, the number of poles of the electric motor according to the four poles, the field magnetic pole of the second generator is characterized in that the driving source of the diesel engine Brushless alternating current system.

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