TWI461618B - Coaxial wind turbine, motor and ventilation system - Google Patents

Description

Coaxial wind turbine, electric motor and ventilation system

The invention relates to a wind power generator and an electric motor, in particular to a coaxial wind power generator and a double coaxial reverse pod propeller motor, which are different from the conventional conventional wind power generator and the electric motor, and can be arranged coaxially. The pivoting rotors operate in opposite directions to increase power generation efficiency. The double coaxial reverse pod propeller motor has no propulsion shaft compartment, and can increase the operation of the ship cabin and the power supply adjustment of the parallel unit of the generator to increase or decrease the number of units and save fuel consumption. The invention can be applied to a ventilation system.

Today's industrial wind turbines operate only with single-sided blades combined with a single armature rotor shaft, with limited functional efficiency. If the generator is to adopt a multi-axis design to increase the amount of power generation, it is obviously facing design difficulties, and the size of the entire generator will inevitably increase. Under a limited volume, the generator is equipped with a single armature rotor and a stator. The amount of power generated by the rotation is limited. In energy use, such as wind, steam or water, the efficiency of powering a single armature rotor with a stator is extremely limited.

In addition, today's industrial wind turbines are mostly based on single-sided blade-driven armature rotors. In terms of improving power generation efficiency, it is often necessary to significantly change the mechanism design, and it is impossible to achieve a huge increase in power generation through simple institutional changes. This means that mass production cannot be planned with existing production techniques. Furthermore, the construction of the generator needs to be simplified to reduce the cost of maintenance in the future and to extend the service life.

In addition, the current propeller motor used in military applications and shipping industry is designed to operate with a single-side boring blade combined with a single armature rotor shaft, or with a single-axis front and rear slab. However, the propeller motor has limited propulsive efficiency due to the rotation of the single armature rotor with the stator. Furthermore, the provision of the redirecting device at the other end of the single armature rotor increases the internal space and weight of the pod propeller, which is not conducive to future maintenance.

In summary, it is highly desirable to propose a generator or motor that is suitable for increasing the power generation efficiency of a generator or pod propulsion motor and that is simple in design and maintenance.

It is an object of the present invention to provide a generator that is suitable for increasing the power generation efficiency of a generator and that is simple in design and maintenance. According to the above object, the present invention provides a generator comprising: a first rotating structure having a first electromagnetic sensing element; and a second rotating structure having a second electromagnetic sensing element, the first rotating structure And the second rotating structure is disposed coaxially; and a hydraulic pump operable to adjust the rotational speed of the first rotating structure and the second rotating structure to coincide.

In accordance with the above objects, the present invention further provides a generator including a rotor; and a rotating stator that rotates in a direction opposite to the direction of rotation of the rotor.

The aforementioned generator can also be designed as an electric motor, in particular a dual coaxial reverse pod propeller motor for ships. Furthermore, the generator of the invention can be applied to a ventilation system.

The presently preferred embodiments are discussed in detail below. It should be understood, however, that the present invention provides many applicable inventive concepts which can be embodied in a wide variety of specific specific contexts. The specific embodiments discussed are merely illustrative of specific ways of using the invention and are not intended to limit the scope of the invention. The embodiments of the present invention are described below with reference to the accompanying drawings, in which the same elements in the following embodiments are denoted by the same reference numerals.

The first figure is a schematic diagram of a coaxial wind turbine combined with a hydraulic system of the present invention. The second picture is a side cross-sectional view of a coaxial wind turbine. In order to explain the structure and operation mechanism of the coaxial wind power generator, the following description will be described in conjunction with the first figure and the second figure.

The generator body 100 is composed of a first armature rotor 1, a first armature rotor shaft 2, a second armature rotor coil bobbin 10, a second armature rotor shaft 11 and a generator casing 50, and is equipped with a hydraulic system. The first armature rotor shaft 2 and the second armature rotor shaft 11 operate coaxially or the first armature rotor shaft 2 is uniaxially operated. The generator casing fixing screw 15 locks the generator casing 50 to the generator unit 100. The first armature rotor 1 comprises a first armature rotor shaft 2, wherein the first armature rotor shaft 2 connects the first armature rotor bearing 3 and the first armature rotor bearing 4 to form a main operating system. The first armature rotor bearing 3 and the second armature rotor bearing 4 are fixed in a bearing housing of the generator casing 50. The second armature rotor is composed of the second armature rotor coil bobbin 10 and the second armature rotor shaft 11 and is fixed to the second armature using three or more screws (for example, the first armature rotor shaft connecting screw 5) The center of the shaft of the rotor coil bobbin 10. The second armature rotor coil bobbin bearing 12 and the second armature rotor coil bobbin bearing 13 are respectively connected to the two ends of the second armature rotor coil bobbin 10, and the second armature rotor coil bobbin bearing 12 and the The two armature rotor coil bobbin bearings 13 are fixed in the bearing housing of the generator case 50. The first armature rotor shaft 2 is coupled to the first armature rotor shaft actuator 22 through the first armature rotor shaft coupling 27, and the second armature rotor shaft 11 is coupled through the second armature rotor shaft coupling 26. It is connected to the second armature rotor shaft actuator 23. With the above design, the first armature rotor shaft 2 and the second armature rotor shaft 11 are located on the same axial center line. Structurally, the first armature rotor 1 may be a permanent magnet or an electromagnet, and the coil of the second armature rotor coil bobbin 10 may be a wound metal coil (or winding) or may be a permanent magnet.

In the initial power generation, in order to enable the first armature rotor shaft 2 and the second armature rotor shaft 11 to operate in opposite directions to each other or to make the first armature rotor shaft 2 independent of the second armature rotor shaft 11, The self-starting control hydraulic system assists the pump 33 to establish the control system hydraulic pressure. When the generator operating system electronic signal controller 35 receives the operation signal, the electromagnetic armature system operates the valve block 34 to release the braking positions of the first armature rotor shaft brake 22 and the second armature rotor shaft brake 23, so that the first armature The rotor shaft 2 rotates in a clockwise or counterclockwise direction, and the second armature rotor shaft 11 is correspondingly rotated in a counterclockwise or clockwise direction. At this time, the first armature rotor shaft 2 is driven by the kinetic energy of the wind blade. The first armature rotor shaft hydraulic gear pump 20, the hydraulic oil outputted therefrom is fed into the second armature rotor shaft hydraulic gear motor hydraulic control valve 32, and the hydraulic oil is input to the second armature rotor hydraulic gear motor 21 to operate. The second armature rotor coil bobbin 10 and discharges hydraulic oil to the hydraulic oil cooler 38 via the second armature rotor shaft hydraulic gear motor hydraulic control valve 37. After operation, the current generated by the second armature rotor coil bobbin 10 via electromagnetic induction is output to the associated power device by the second armature rotor conductive carbon brush 14.

If the second armature rotor coil bobbin bearing 12 or the second armature rotor coil bobbin bearing 13 fails, the hydraulic system auxiliary pump 33 is activated to establish the control system hydraulic pressure, and the generator operating system electronic signal controller 35 When the operation signal is accepted, the electromagnetic brake system operates the valve block 34 to release the braking position of the first armature rotor shaft brake 22, rotates the first armature rotor shaft 2, and maintains the second armature rotor shaft brake 23 at the braking position. The second armature rotor shaft 11 is braked. Through the above operation, the first armature rotor shaft 2 drives the first armature rotor shaft hydraulic gear pump 20 to operate, and the first armature rotor shaft hydraulic gear pump 20 outputs hydraulic pressure to the second armature rotor shaft. The hydraulic gear motor control valve 32 is bypassed to the second armature rotor shaft hydraulic gear motor hydraulic control valve 37 and, in turn, to the hydraulic oil cooler 38. After operation, the current generated by the second armature rotor coil bobbin 10 via electromagnetic induction is output by the second armature rotor conductive carbon brush 14 to the associated power device. To completely stop the generator operation, the electromagnetic operating system operates the valve block 34 by the generator operating system electronic signal controller 35, so that the first armature rotor shaft hydraulic gear pump 20 outputs hydraulic pressure into the second armature rotor shaft hydraulic pressure. The gear motor hydraulic control valve 32 is bypassed to the second armature rotor shaft hydraulic gear motor hydraulic control valve 37 and, in turn, to the hydraulic oil cooler 38. After the second armature rotor shaft 11 is stopped, the signal of the second armature rotor shaft speed signal generator 25 is controlled by the generator operating system electronic signal controller 35 to operate the electromagnetic hydraulic system operating valve group 34, and brake the second armature rotor. The shaft brake 23 causes the second armature rotor shaft 11 to be in the braking position, and then the first armature rotor shaft brake 22 brakes the rotation of the first armature rotor shaft 2, the first armature rotor shaft speed signal generator 24 The signal is detected by the generator operating electronic signal controller 35, thereby controlling the first armature rotor shaft brake 22 and braking the first armature rotor shaft brake 22, at which point the generator ceases to operate.

In addition, the hydraulic gear pump 20 is changed to use a variable stroke pump, and the rotation speeds of the first armature rotor 1 and the second armature rotor can be adjusted to have a larger shaft speed change than the hydraulic gear pump 20. .

Further, the hydraulic oil in the hydraulic oil cooler 38 is temporarily stored in the hydraulic oil storage cabinet 39, and is recirculated after being filtered by the hydraulic oil filter 40. The generator base hydraulic steering system 36 is coupled to the electromagnetic hydraulic system operating valve block 34 to control the direction of the hydraulic pressure of the generator.

In addition, the aforementioned generator can be further designed as a dual coaxial reverse pod propeller motor for ships. The schematic diagram of the motor combined with the hydraulic system is shown in the first figure and the second figure, and details are not described herein again. The components and numbers related to the generator may be replaced by components and numbers related to the motor, such as the generator base hydraulic steering system. 36 is replaced by a motor base hydraulic steering system 36.

Please refer to the third figure for a side cross-sectional view of the dual coaxial reverse pod thruster motor. In the following, only the technical difference between the motor and the aforementioned generator will be described using the first figure in combination with the third figure, and the same technique as the motor and the generator is not repeatedly described.

In the structure of the electric motor combined with the hydraulic system, the second armature rotor coil bobbin 10 includes the second armature rotor coil bobbin bearing 12, and the second armature rotor coil bobbin bearing 13 is fixed to the bearing housing of the motor casing 50. Inside.

When the motor is initially running, the control hydraulic system assists the pump 33 to establish the control system hydraulic pressure. When the motor operating system electronic signal controller 35 receives the operation signal, the operating system of the dual coaxial reverse pod thruster motor controls its power input by the second armature rotor conductive carbon brush 14, and the electromagnetic hydraulic system operates the valve block 34 to release the first The braking position of the armature rotor shaft brake 22 and the second armature rotor shaft brake 23 generates an electromagnetic field when the current is passed by the second armature rotor conductive carbon brush 14 through the coil of the second armature rotor coil bobbin 10, the first electric The rotation generated by the magnetic sense of the pivotal rotor 1 causes the first armature rotor shaft 2 to rotate in a clockwise or counterclockwise direction to drive the first armature rotor shaft drive shaft 6 and the first armature rotor shaft yoke 28, the second electric The pivoting rotor shaft 11 is correspondingly rotated in a counterclockwise or clockwise direction, and at this time, the first armature rotor shaft 2 drives the first armature rotor shaft hydraulic gear pump 20, so that the output hydraulic oil is passed into the second An armature rotor shaft hydraulic gear motor hydraulic control valve 32, and then input hydraulic oil to the second armature rotor hydraulic gear motor 21 to operate the second armature rotor coil bobbin 10, and rotate the second armature rotor shaft drive shaft 16 and First The armature rotor shaft yoke 29 and the hydraulic oil are discharged to the hydraulic oil cooler 38 via the second armature rotor shaft hydraulic gear motor hydraulic control valve 37 as the first armature rotor shaft 2 and the second armature rotor shaft 11 At this point, the two axes are reversed from each other.

If the second armature rotor coil cradle bearing 12 or 13 fails, the hydraulic system auxiliary pump 33 is activated to establish the control system hydraulic pressure, and is operated by the electromagnetic hydraulic system when the motor operating system electronic signal controller 35 receives the operation signal. The valve block 34 releases the braking position of the first armature rotor shaft brake 22, rotates the first armature rotor shaft 2, and maintains the second armature rotor shaft brake 23 in the braking position to brake the second armature rotor shaft 11. . The power input is controlled by the operating system of the dual coaxial reverse pod thruster motor, and the current generated by the second armature rotor conductive carbon brush 14 to the second armature rotor coil bobbin 10 induces the first armature rotor 1 drives the first armature rotor shaft hydraulic gear pump 20 connected to the first armature rotor shaft 2 to operate, and the first armature rotor shaft hydraulic gear pump 20 outputs hydraulic pressure to the second armature rotor The shaft hydraulic gear motor control valve 32 is bypassed to the second armature rotor shaft hydraulic gear motor hydraulic control valve 37 and, in turn, to the hydraulic oil cooler 38.

To completely stop the motor operation, the power supply input is stopped by the super-operating system of the dual coaxial reverse pod thruster motor, and the electromagnetic operating system operates the valve block 34 by the motor operating system electronic signal controller 35 to make the first armature rotor The shaft hydraulic gear pump 20 outputs hydraulic pressure into the second armature rotor shaft hydraulic gear motor hydraulic control valve 32, bypassed to the second armature rotor shaft hydraulic gear motor hydraulic control valve 37, and then discharged to the hydraulic oil cooler 38 The first armature rotor shaft 2 and the second armature rotor shaft 11 are both in a free position and receive the next action. Or after the second armature rotor shaft 11 is stopped, the signal of the second armature rotor shaft speed signal generator 25 is controlled by the motor operating system electronic signal controller 35 to operate the electromagnetic hydraulic system operating valve group 34, and brake the second armature rotor. The shaft brake 23 causes the second armature rotor shaft 11 to be in the braking position, and then the first armature rotor shaft brake 22 brakes the rotation of the first armature rotor shaft 2, the first armature rotor shaft speed signal generator 24 The signal is detected by the motor operating electronic signal controller 35, thereby controlling the first armature rotor shaft brake 22 and braking the first armature rotor shaft brake 22, at which time the motor is stopped.

When the situation is critical, the super-operating system of the dual-coaxial reverse pod propeller motor stops its power input, and the electromagnetic operating system operates the valve block 34 by the motor operating system electronic signal controller 35 to make the first armature rotor shaft hydraulic The gear pump 20 outputs hydraulic pressure to the second armature rotor shaft hydraulic gear motor hydraulic control valve 32, bypassed to the second armature rotor shaft hydraulic gear motor hydraulic control valve 37, and then discharged to the hydraulic oil cooler 38, the motor The operating system electronic signal controller 35 controls the electromagnetic hydraulic system operating valve block 34 at the same time, brakes the first armature rotor shaft brake 22 and the second armature rotor shaft brake 23, so that the first armature rotor shaft 2 and the second The armature rotor shaft 11 has two axes at the braking position and stops rotating.

In addition, the hydraulic gear pump 20 is changed to use a variable stroke pump, and the rotation speeds of the first armature rotor shaft 2 and the second armature rotor shaft 11 can be adjusted to be larger than that of the hydraulic gear pump 20. The shaft speed changes.

The motor base hydraulic steering system 36 is coupled to the electromagnetic hydraulic system operating valve block 34 to control the operation direction of the motor's pod thruster base to replace the conventional rudder and change the direction of travel.

In addition, the pod thruster mount can also be a motor housing 50 to simplify the body configuration of the motor.

Further, the generator of the present invention can also be applied to various ventilation systems.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the present invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application attached. Through the above operations, the present invention at least produces the following effects:

(1) Under the same source of power supply, assuming that the two armature rotor shafts 2, 11 are each operated at a rate of 300 RPM, the two shafts can be added up to 600 RPM in the opposite direction. Therefore, this has higher power generation efficiency than the conventional generator (or motor) under the same power source supply.

(2) The coaxial wind turbine generator (or the double coaxial reverse pod propeller motor) is supplied with hydraulic oil by the hydraulic system auxiliary pump 33 to drive the first armature rotor shaft 2 and the second armature rotor shaft 11 before starting. Reduce the damage of each bearing and increase the utilization rate.

(3) The coaxial wind turbine (or motor) may also be separately powered by the armature rotor 1, in the second armature rotor coil bobbin bearing 12, the second armature rotor coil bobbin bearing 13, the second armature When the rotor shaft hydraulic gear motor 21 fails, the generator still has a power generation function.

(4) The present invention emphasizes that the first armature rotor shaft 2 of the generator (or electric motor) and the second armature rotor coil bobbin 10 are disposed on the same axis and operate in opposite directions with each other, and are combined with the hydraulic system control. The starting and braking of an armature rotor shaft 2 and a second armature rotor shaft 11 are not designed to significantly change the mechanism, and it is not necessary to additionally increase the generator volume.

Example:

A generator comprising: a first rotating structure having a first electromagnetic sensing element; a second rotating structure having a second electromagnetic sensing element, the first rotating structure and the second rotating structure Disposed in a coaxial manner; and a hydraulic pump operable to adjust the rotational speed of the first rotational structure to the second rotational structure.

2. The generator of embodiment 1, wherein the first rotating structure rotates in a first rotational direction, the second rotational structure rotates in a second rotational direction, the first rotational direction being different from the second rotational direction The direction, wherein when the first rotation direction is a clockwise direction or a reverse clock direction, the second rotation direction is correspondingly the counterclockwise direction or the clockwise direction.

3. The generator of any one of clauses 1 to 2, wherein the first electromagnetic induction element is a first winding or a first permanent magnet, the second electromagnetic The sensing element is a second winding or a second permanent magnet.

4. The generator of any one of clauses 1 to 3, wherein the first rotating structure and the second rotating structure are operated at different rotational speeds, and the first rotating structure is independent of the second Rotate the structure and run it alone.

5. The generator of any one of clauses 1 to 4, wherein the generator further comprises a first rotating structure brake and a second rotating structure brake, the first rotating structure being the first rotation The structural brake is braked and the second rotating structure is braked by the second rotating structure brake.

6. The generator of any one of the items 1 to 5, further comprising an electromagnetic hydraulically operated valve group having an electronic signal controller, wherein the first rotating structure has a first signal generator, The second rotating structure has a second signal generator. When the electronic signal controller receives the start signal of the first signal generator or the second signal generator, a hydraulic pressure is established by the hydraulic pump to release the second signal generator. A first braking position of the first rotating structure brake to operate the first rotating structure or to release a second braking position of the second rotating structure brake to operate the second rotating structure.

7. The generator of any one of clauses 1 to 6, wherein when the first rotating structure or the second rotating structure reaches a self-rotating rotational speed, the first signal generator or the The second signal generator sends a stop signal to the electronic signal controller, and the electromagnetic pressure operated valve group cuts off the hydraulic pressure supplied to the first rotating structure brake or the second rotating structure brake to stop the hydraulic pumping Operation.

8. The generator of any one of clauses 1 to 7, further comprising a first hydraulic gear motor and a second hydraulic gear motor, wherein the first hydraulic gear motor is configured to operate the first rotation And the second hydraulic gear motor is configured to operate the second rotating structure.

9. The generator of any one of clauses 1 to 8, further comprising a variable displacement pump for discharging a hydraulic oil, wherein the rotational speed of the second rotating structure is based on the flow of the hydraulic oil And adjust.

10. A generator comprising: a rotor; and a rotating stator that rotates in a direction opposite to a direction of rotation of the rotor.

11. An electric motor comprising: a first rotating structure having a first electromagnetic sensing element; a second rotating structure having a second electromagnetic sensing element, the first rotating structure and the second rotating structure Arranged in a coaxial manner; and a hydraulic pump operable to adjust the rotational speed of the first rotational structure to the second rotational structure.

12. The technical solution of the generator according to the first to ninth embodiments of the present invention is applicable to the electric motor, and further, the electric motor is a dual coaxial coaxial pod propulsion motor for a ship.

13. The technical solution of the generator according to the first to the ninth to the seventh embodiment is applicable to the ventilation system.

1. . . First armature rotor

2. . . First armature rotor shaft

3. . . First armature rotor bearing

4. . . First armature rotor bearing

5. . . First armature rotor shaft connecting screw

6. . . First armature rotor shaft drive shaft

10. . . Second armature rotor coil frame

11. . . Second armature rotor shaft

12. . . Second armature rotor coil frame bearing

13. . . Second armature rotor coil frame bearing

14. . . Second armature rotor conductive carbon brush

15. . . Generator (or motor) housing fixing screw

16. . . Second armature rotor shaft drive shaft

20. . . First armature rotor shaft hydraulic gear pump

twenty one. . . Second armature rotor shaft hydraulic gear motor

twenty two. . . First armature rotor shaft brake

twenty three. . . Second armature rotor shaft brake

twenty four. . . First armature rotor shaft speed signal generator

25. . . Second armature rotor shaft speed signal generator

26. . . Second armature rotor shaft coupling

27. . . First armature rotor shaft coupling

28. . . First armature rotor shaft

29. . . Second armature rotor shaft

32. . . Into the second armature rotor shaft hydraulic gear motor hydraulic control valve

33. . . Hydraulic system auxiliary pump

34. . . Electromagnetic hydraulic system operating valve block

35. . . Generator (or motor) operating system electronic signal controller

36. . . Generator (or motor) base hydraulic steering system

37. . . Second armature rotor shaft hydraulic gear motor hydraulic control valve

38. . . Hydraulic oil cooler

39. . . Hydraulic oil storage tank

40. . . Hydraulic oil filter

50. . . Generator (or motor) housing

51. . . Pod propeller steering base

100. . . Generator overall

101. . . Pod propeller overall

First: A schematic diagram of a coaxial wind turbine combined with a hydraulic system of the present invention.

Figure 2: Side view of a coaxial wind turbine.

Figure 3: A side cross-sectional view of a double coaxial reverse pod thruster motor.

1. . . First armature rotor

2. . . First armature rotor shaft

3. . . First armature rotor bearing

4. . . First armature rotor bearing

5. . . First armature rotor shaft connecting screw

10. . . Second armature rotor coil frame

11. . . Second armature rotor shaft

12. . . Second armature rotor coil frame bearing

13. . . Second armature rotor coil frame bearing

14. . . Second armature rotor conductive carbon brush

15. . . Generator housing fixing screw

20. . . First armature rotor shaft hydraulic gear pump

twenty one. . . Second armature rotor shaft hydraulic gear motor

twenty two. . . First armature rotor shaft brake

twenty three. . . Second armature rotor shaft brake

twenty four. . . First armature rotor shaft speed signal generator

25. . . Second armature rotor shaft speed signal generator

26. . . Second armature rotor shaft connector

27. . . First armature rotor shaft connector

50. . . Generator housing

100. . . Generator overall

Claims (13)

A generator comprising: a first rotating structure having a first electromagnetic sensing element; a second rotating structure having a second electromagnetic sensing element, the first rotating structure and the second rotating structure being a coaxially disposed; and a hydraulic pump operable to operate the first rotating structure or the second rotating structure to cause the first electromagnetic sensing element and the second electromagnetic sensing element to generate a current via an electromagnetic induction, and Adjusting the rotational speed of the first rotating structure and the second rotating structure. The generator of claim 1, wherein the first rotating structure rotates in a first rotational direction, and the second rotational structure rotates in a second rotational direction, the first rotational direction being different from the second rotational direction When the first rotation direction is a clockwise direction or a reverse clock direction, the second rotation direction is correspondingly the counterclockwise direction or the clockwise direction. The generator of claim 1, wherein the first electromagnetic induction element is a first winding or a first permanent magnet, and the second electromagnetic induction element is a second winding or a Second permanent magnet. The generator of claim 1, wherein the first rotating structure and the second rotating structure operate at different rotational speeds, and the first rotating structure can be operated independently of the second rotating structure. The generator of claim 4, wherein the generator further comprises a first rotating structure brake and a second rotating structure brake, the first rotating structure is braked by the first rotating structure brake, and the second The rotating structure is braked by the second rotating structure brake. The generator of claim 5, further comprising an electromagnetic hydraulic operating valve group having an electronic signal controller, wherein the first rotating structure has a first signal The second rotating structure has a second signal generator, and when the electronic signal controller receives the start signal of the first signal generator or the second signal generator, a hydraulic pressure is established by the hydraulic pump And releasing a first braking position of the first rotating structure brake to operate the first rotating structure or releasing a second braking position of the second rotating structure brake to operate the second rotating structure. The generator of claim 6, wherein when the first rotating structure or the second rotating structure reaches a self-rotating rotational speed, a stop signal is sent from the first signal generator or the second signal generator. And to the electronic signal controller, and the hydraulic pressure supplied to the first rotating structure brake or the second rotating structure brake is cut off by the electromagnetic hydraulic operating valve group to stop the operation of the hydraulic pump. The generator of claim 1, further comprising a first hydraulic gear motor and a second hydraulic gear motor, wherein the first hydraulic gear motor is configured to operate the first rotating structure, and the second hydraulic gear motor It is used to operate the second rotating structure. The generator of claim 1 further includes a variable displacement pump for discharging a hydraulic oil, wherein the rotational speed of the second rotating structure is adjusted according to the flow rate of the hydraulic oil. A generator comprising: a rotor having a first rotational speed; a rotating stator having a second rotational speed and rotating in a direction opposite to a rotational direction of the rotor; and a hydraulic pump operable to operate the rotor or the rotating And a stator to reduce the first rotational speed or the second rotational speed to further increase the second rotational speed or the first rotational speed that is not subjected to the hydraulic pumping operation. An electric motor comprising: a first rotating structure having a first rotational speed and a first electromagnetic induction element; a second rotating structure having a second rotational speed and a second electromagnetic induction element, the first rotational structure and the second rotational structure being disposed coaxially; and a hydraulic pump operable to cause the first An electromagnetic induction element or the second electromagnetic induction element generates a current through electromagnetic induction, and operates the first rotating structure and the second rotating structure to reduce the first rotational speed or the second rotational speed, thereby improving The second rotational speed of the hydraulic pump operation or the first rotational speed. The electric motor of claim 11, wherein the electric motor is a marine dual coaxial reverse nacelle propeller motor. A ventilation system using the generator described in claim 1 of the scope of the patent application.