Experimental system and method for simulating multi-working-condition wave power generation

Abstract

The invention relates to the technical field of ocean renewable energy utilization, in particular to an experimental system and method for simulating multi-working-condition wave power generation, and the system comprises a base which is provided with a motion platform; two groups of swing arm floater wave energy power generation devices are arranged; the tidal range simulation unit is in transmission connection with the motion platform to drive the motion platform to lift; the wave generation unit is in transmission connection with the swing arm floater wave energy power generation device to drive the swing arm floater wave energy power generation device to move; the energy recovery and control unit is connected with the swing arm floater wave energy power generation device; through the combined design of the wave generation unit and the symmetrical swing arm device, full-working-condition coverage simulation of high-frequency extreme sea conditions, low sea conditions and wave attenuation working conditions is achieved, meanwhile, tide level change simulation is achieved in cooperation with the tide range simulation unit, and the problems that a traditional system is incomplete in working condition coverage and disjointed with the actual marine environment are solved.

Description

Technical Field

[0001] This invention relates to the field of marine renewable energy utilization technology, specifically a simulated multi-condition wave energy power generation experimental system and method. Background Technology

[0002] With the global energy structure shifting towards cleaner energy sources, wave energy, as a abundant marine renewable energy source, has become a research hotspot. The pendulum-type wave energy generator, due to its simple structure and high energy capture efficiency, has become one of the important technological routes for wave energy utilization. However, the actual operating environment of this type of device is greatly affected by marine conditions (such as wave period, amplitude, and energy attenuation), requiring verification of its stability and reliability through indoor simulation experimental systems to provide a theoretical basis for practical applications.

[0003] Traditional indoor experimental systems cannot accurately simulate the instantaneous energy impact of high-frequency extreme sea states (short period, large amplitude), the weak energy capture of low sea states (long period, small amplitude), and the energy attenuation process during wave propagation. This makes it difficult for researchers to test the performance limits of devices under complex real sea conditions. Furthermore, traditional systems can only simulate wave energy generation in a single state and cannot reproduce the dynamic process of energy gradually attenuating with distance during wave propagation. This results in a disconnect between the experimental scenario and the actual marine environment, limiting the comprehensiveness and realism of the simulation results and making it difficult to support research on the energy transfer and conversion laws during wave attenuation. Summary of the Invention

[0004] The purpose of this invention is to provide a simulated multi-condition wave energy power generation experimental system and method to solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions: A simulated multi-condition wave energy generation experimental system includes: The base has a motion platform on top; Two sets of the swing-arm float wave energy generation device are installed symmetrically on the moving platform; A tidal range simulation unit is mounted on a base and is connected to the motion platform via a transmission connection to drive the motion platform to lift and lower. The wave generation unit is also set on the motion platform and is connected to the swing arm float wave energy power generation device to drive its movement, simulating the effect of waves on the power generation device under different sea conditions. It also includes an energy recovery and control unit, which is connected to the pendulum float wave energy generator. The energy recovery and control unit is used to receive, store, and regulate the energy generated by the pendulum float wave energy generator, while providing power to the experimental system.

[0006] Furthermore, the tidal range simulation unit includes a motor fixedly mounted on the base and four electric push rods arranged in a rectangular pattern; The output end of the motor is connected to a speed reducer, and the other two ends of the speed reducer are connected to a drive shaft via a coupling. The two drive shafts are driven by two electric push rods. The electric push rods are connected to the corresponding electric push rods via a coupling and a drive shaft to achieve synchronous driving of the four electric push rods. The telescopic end of the electric push rod is fixedly connected to the motion platform to drive the motion platform to rise and fall vertically to simulate the tide level.

[0007] Furthermore, the wave generation unit includes: Two sets of high-frequency extreme sea state simulation units are connected to two sets of swing arm float wave energy generation devices to simulate the wave action under high-frequency extreme sea states. Low sea state simulation unit; simultaneously connected to two sets of pendulum float wave energy generation devices to simulate wave action under low sea states.

[0008] Furthermore, the high-frequency extreme sea state simulation unit includes: Guide wall panels fixedly installed on the motion platform; A lifting hydraulic cylinder is fixedly installed on a motion platform. A U-shaped guide bracket is installed at the output end of the lifting hydraulic cylinder, and a movable pulley is installed on the U-shaped guide bracket. A wire rope fixing seat is fixedly installed at the upper part of the guide wall panel; And a steel wire rope, one end of which is connected to a steel wire rope fixing seat, and the other end of which passes over a movable pulley and is connected to a set of swing arm float wave energy generation devices at the corresponding position.

[0009] Furthermore, the low sea state simulation unit includes a guide gantry frame fixedly installed on the motion platform; a stepper motor is fixedly installed at the bottom of the guide gantry frame, a T-shaped lead screw is fixedly connected to the output end of the stepper motor, and a U-shaped guide bracket is threadedly connected to the periphery of the T-shaped lead screw, and the U-shaped guide bracket is slidably connected to the guide gantry frame. Two fixed pulleys are installed at the upper part of the guide gantry frame. Two steel wire ropes are fixedly connected to the top of the U-shaped guide support. The ends of the two steel wire ropes away from the U-shaped guide support are respectively wrapped around the two fixed pulleys and connected to the corresponding swing arm float wave energy generation device.

[0010] Furthermore, the swing arm float wave energy generation device includes a conical wave-absorbing float, a swing arm, a stroke limit bracket, a double-outlet hydraulic cylinder, and a base bracket; The base bracket is fixed on the motion platform, and one end of the swing arm is connected to the conical wave-absorbing float, while the other end is connected to the output end of the double-outlet hydraulic cylinder. The dual-rod hydraulic cylinder is fixedly mounted on the base bracket and connected to the energy recovery and control unit via hydraulic lines. The travel limit bracket is mounted on the base bracket and is used to limit the swing travel of the swing arm.

[0011] Furthermore, the energy recovery and control unit includes an energy accumulator, a hydraulic motor, a generator, an energy storage module, and a controller; The inlet of the accumulator is connected to the double-outlet hydraulic cylinder of the swing arm float wave energy power generation device through a hydraulic pipeline, and the outlet is connected to the hydraulic motor through a hydraulic pipeline. The hydraulic motor is connected to the generator for transmission, and the generator is electrically connected to the energy storage module; The controller is electrically connected to the tidal range simulation unit, the wave generation unit, and the pendulum float wave energy generation device, and is used to regulate the operation of each unit.

[0012] Furthermore, the energy storage module includes energy storage module one and energy storage module two, both of which are electrically connected to the generator to jointly store the electrical energy generated by the generator.

[0013] Another objective of this invention is to provide a method for operating a simulated multi-condition wave energy generation experimental system, comprising the following steps: S1: Input an analog signal through the controller to start the tidal range simulation unit, which drives the motion platform to rise and fall to simulate tidal level changes; S2: Based on the sea state to be simulated, selectively activate the high-frequency extreme sea state simulation unit or the low sea state simulation unit of the wave generation unit; When the high-frequency extreme sea state simulation unit is activated, the lifting hydraulic cylinder drives the moving pulley to move, which in turn drives the swing arm of the wave energy generation device via the steel wire rope. When the low sea state simulation unit is started, the stepper motor drives the T-shaped lead screw to move, which in turn drives the swing arm to swing through the steel wire rope. When simulating wave attenuation conditions, the controller controls the wave generation unit to generate a unidirectional incident wave and adjusts the swing amplitude and period of the two symmetrically arranged pendulum float wave energy generation devices. S3: The swing arm swings to drive the double-rod hydraulic cylinder to move, converting mechanical energy into hydraulic energy, which is then transported to the accumulator for storage through the hydraulic pipeline; S4: The energy storage device delivers hydraulic energy to the hydraulic motor according to the power generation demand, drives the hydraulic motor to drive the generator to generate electricity, and stores the electrical energy generated by the generator in the energy storage module. S5: During the next experiment, the energy storage module supplies power to the electrical equipment in the experimental system, realizing energy recycling.

[0014] The beneficial effects of this invention are: 1. This invention achieves full-condition simulation of high-frequency extreme sea state, low sea state, and wave attenuation conditions through the combined design of a high-frequency extreme sea state simulation unit, a low sea state simulation unit, and a symmetrical swing arm device. At the same time, it is combined with a tidal range simulation unit to simulate tidal level changes, thus solving the problems of incomplete condition coverage and disconnection from the actual marine environment in traditional systems.

[0015] 2. The energy storage design of this invention realizes the buffering and storage of hydraulic energy, which can avoid the energy waste problem of direct power consumption in traditional systems and reduce the dependence on external power.

[0016] 3. The energy storage buffer, energy recovery and multi-condition collaborative control designs of this invention can be transferred to the experimental systems of other types of wave energy power generation devices to form a standardized technical solution that can be promoted. The float and the motion platform adopt a detachable structure with bolt connection. The size of the float can be flexibly changed according to actual design requirements, which can adapt to the experimental requirements of wave energy power generation devices of different scales and types, and provide a low-cost and high-precision indoor experimental platform for the wave energy power generation industry. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 A three-dimensional schematic diagram; Figure 3 This is a three-dimensional schematic diagram of the tidal range simulation unit in this invention; Figure 4 This is a schematic diagram of the wave generation unit in this invention; Figure 5 This is a three-dimensional schematic diagram of the high-frequency extreme sea state simulation unit in this invention; Figure 6 This is a three-dimensional schematic diagram of the low sea state simulation unit in this invention; Figure 7 This is a three-dimensional schematic diagram of the swing arm float wave energy generation device of the present invention; Figure 8 This is a schematic diagram of the energy recovery and control unit in this invention; Figure 9 This is a schematic diagram of the pulley system principle in this invention; The attached figures are labeled as follows: 1-Base; 2-Tidal range simulation unit; 3-Motion platform; 4-Swing arm float wave energy generation device; 6-Wave generation unit; 7-Wire rope; 8-Fixed pulley; 9-Energy recovery and control unit; 10-Electric push rod; 11-Motor; 12-Reduction and reversing mechanism; 13-Coupling; 14-Drive shaft; 15-Lifting hydraulic cylinder; 16-Stepper motor; 17-T-type lead screw; 18-Guide gantry frame; 19-Guide wall plate; 20-Moving pulley; 21-Wire rope fixing seat; 22-U-shaped guide bracket one; 23-Conical wave-absorbing float; 24-Swing arm; 25-Stroke limit bracket; 26-Double rod hydraulic cylinder; 27-Base bracket; 28-Accumulator; 29-Hydraulic motor; 30-Generator; 31-Energy storage module one; 32-Energy storage module two; 33-Controller; 34-U-shaped guide bracket two. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1 and Figure 2 In this embodiment of the invention, a simulated multi-condition wave energy generation experimental system includes: The base 1 has a motion platform 3 mounted on top; Two sets of the swing arm float wave energy generation device 4 are installed symmetrically on the motion platform 3. Tidal range simulation unit 2 is mounted on base 1 and is connected to motion platform 3 to drive motion platform 3 to rise and fall; Wave generation unit 6 is also set on motion platform 3 and is connected to swing arm float wave energy power generation device 4 to drive its movement, simulating the effect of waves on power generation device under different sea conditions. And an energy recovery and control unit 9, which is connected to the swing arm float wave energy generator 4. The energy recovery and control unit 9 is used to receive, store and regulate the energy generated by the swing arm float wave energy generator 4, and at the same time provide power to the experimental system.

[0020] In this invention, the tidal range simulation unit 2 drives the motion platform 3 to rise and fall to simulate ocean tidal changes; the wave generation unit 6 drives two sets of symmetrically arranged swing-arm float wave energy generation devices 4 to move, respectively simulating the effect of waves on the power generation devices under different sea conditions; the swing-arm float wave energy generation device 4 converts the mechanical energy generated by wave simulation into hydraulic energy, and the energy recovery and control unit 9 receives the hydraulic energy and converts it into electrical energy for storage, while regulating the operation of each unit to realize multi-condition simulation and energy recycling.

[0021] Therefore, this invention integrates tidal range, multi-sea state simulation and energy recovery functions to form an integrated experimental system, solving the problem of traditional systems having dispersed functions and requiring multiple devices to cooperate, and improving experimental efficiency; the two sets of symmetrically arranged pendulum float wave energy generation devices 4 provide a basis for simulating wave attenuation conditions, solving the problem that traditional systems cannot simulate the dynamic attenuation of wave energy; Among them, the energy recovery and control unit 9 realizes energy storage and secondary utilization, thereby improving energy efficiency.

[0022] Example 2: Please refer to Figures 1-3 Based on embodiment 1, the tidal range simulation unit 2 includes a motor 11 fixedly mounted on the base 1 and four electric push rods 10 arranged in a rectangular shape. The output end of the motor 11 is connected to the gear reducer 12. The other two ends of the gear reducer 12 are connected to the drive shaft 14 through the coupling 13. The two drive shafts 14 are driven by the two electric push rods 10. The electric push rod 10 and the electric push rod on the corresponding side are connected by the coupling 13 and the drive shaft 14 to realize the synchronous drive of the four electric push rods 10. The telescopic end of the electric push rod 10 is fixedly connected to the motion platform 3 to drive the motion platform 3 to rise and fall in the vertical direction to simulate the tide level.

[0023] In this embodiment, the motor 11 outputs power, which is then adjusted in speed and direction by the speed reducer 12 and transmitted to the drive shaft 14 via the coupling 13. The drive shaft 14 distributes the power to four rectangularly distributed electric push rods 10, enabling the four electric push rods 10 to extend and retract synchronously. The telescopic end of the electric push rod 10 drives the motion platform 3 to rise and fall smoothly in the vertical direction, which can accurately simulate the tidal level change range of 0-1.5m and match the actual ocean tidal level fluctuation range.

[0024] In this embodiment, the four electric push rods 10 are driven synchronously to avoid the movement platform 3 tilting due to uneven force, thereby improving the stability and accuracy of the tide level simulation. The extension and retraction speed of the electric push rods 10 can be controlled by adjusting the speed of the motor 11 to simulate different tide level change rates and cover more actual tidal range scenarios.

[0025] Example 3: Please refer to Figure 1 , Figure 2 , Figures 4-6 and Figure 9 Based on Example 1, the wave generation unit 6 includes: Two sets of high-frequency extreme sea state simulation units are connected to two sets of swing arm float wave energy generation devices 4 respectively, and are used to simulate the wave action under high-frequency extreme sea states. Low sea state simulation unit; it is also connected to two sets of pendulum float wave energy generation devices 4 to simulate the wave action under low sea state conditions.

[0026] The high-frequency extreme sea state simulation unit includes: Guide wall panel 19 is fixedly installed on motion platform 3; A lifting hydraulic cylinder 15 is fixedly installed on the motion platform 3. A U-shaped guide bracket 22 is installed at the output end of the lifting hydraulic cylinder 15. A movable pulley 20 is installed on the U-shaped guide bracket 22. A wire rope fixing seat 21 is fixedly installed on the upper part of the guide wall plate 19; And a steel wire rope 7, one end of which is connected to a steel wire rope fixing seat 21, and the other end is connected to a set of swing arm float wave energy generation devices 4 at the corresponding position after passing over the movable pulley 20.

[0027] The low sea state simulation unit includes a guide gantry 18 fixedly installed on the motion platform 3; a stepper motor 16 is fixedly installed at the bottom of the guide gantry 18, a T-shaped lead screw 17 is fixedly connected to the output end of the stepper motor 16, and a U-shaped guide bracket 34 is threadedly connected to the periphery of the T-shaped lead screw 17, and the U-shaped guide bracket 34 and the guide gantry 18 are connected in a limited sliding connection. Two fixed pulleys 8 are installed at the upper part of the guide gantry frame 18. Two steel wire ropes 7 are fixedly connected to the top of the U-shaped guide support 34. The ends of the two steel wire ropes 7 away from the U-shaped guide support 34 pass around the two fixed pulleys 8 and are connected to the corresponding swing arm float wave energy generator 4.

[0028] High-frequency extreme sea state simulation: The lifting hydraulic cylinder 15 extends and retracts to drive the U-shaped guide bracket 22 and the movable pulley 20 to move up and down, forming a pulley block structure with the wire rope fixing seat 21 and the wire rope 7; the pulley block amplifies the stroke of the lifting hydraulic cylinder 15, and drives the swing arm 24 of the wave energy generator 4 of the swing arm float to swing at high frequency and large amplitude through the wire rope 7, simulating the impact of waves on the float under high-frequency extreme sea states; the guide wall plate 19 provides guidance for the movement of the movable pulley 20 to prevent the wire rope 7 from deviating.

[0029] Low sea state simulation: Stepper motor 16 drives T-screw 17 to rotate. T-screw 17 drives U-shaped guide bracket 34 to slide along guide gantry 18 through threaded transmission. U-shaped guide bracket 34 drives steel wire rope 7 to move. After the direction of force is changed by fixed pulley 8, it drives swing arm 24 to swing at low frequency and small amplitude. The precise speed control of stepper motor 16 can realize the precise simulation of long period and small amplitude, matching the wave characteristics of low sea state.

[0030] In this embodiment, the high-frequency extreme sea state simulation unit adopts a pulley block structure, which increases the stroke of the lifting hydraulic cylinder by 15 while reducing the size of the device, thus solving the problem of excessive size and space occupation of traditional devices. The low sea state simulation unit uses a combination of a stepper motor 16 and a T-type lead screw 17 to replace the hydraulic cylinder with insufficient control precision, thereby achieving precise control with small amplitude and long period, and solving the problem that traditional systems cannot accurately simulate low sea states. In use, the combination of two sets of high-frequency simulation units and one set of low sea state simulation units can be started separately or simultaneously, which can cover high-frequency extreme sea state, low sea state and mixed sea state scenarios, effectively solving the problem of incomplete coverage of traditional system operating conditions.

[0031] Example 4: Please refer to Figure 1 , Figure 2 and Figure 7 Based on Example 1, the swing arm float wave energy generation device 4 includes a conical wave-absorbing float 23, a swing arm 24, a stroke limit bracket 25, a double-outlet hydraulic cylinder 26, and a base bracket 27. The base bracket 27 is fixed on the motion platform 3, and one end of the swing arm 24 is connected to the conical wave-absorbing float 23, and the other end is connected to the output end of the double-rod hydraulic cylinder 26. The double-rod hydraulic cylinder 26 is fixedly mounted on the base bracket 27 and connected to the energy recovery and control unit 9 through hydraulic lines; The travel limit bracket 25 is mounted on the base bracket 27 to limit the swing travel of the swing arm 24.

[0032] The conical wave-absorbing float 23 receives the simulated wave force transmitted by the wave generation unit 6 through the steel wire rope 7, which drives the swing arm 24 to swing around the connection point on the base bracket 27. When the swing arm 24 swings, it pushes the piston rod of the double-rod hydraulic cylinder 26 to reciprocate, converting mechanical energy into hydraulic energy. The hydraulic energy is then transmitted to the energy recovery and control unit 9 through the hydraulic pipeline. The stroke limit bracket 25 can limit the maximum swing angle of the swing arm 24, preventing the swing arm 24 from damaging the double-rod hydraulic cylinder 26 or its own structure due to excessive swing amplitude, thus protecting the safety of the device.

[0033] Example 5: Please refer to Figure 1 , Figure 2 and Figure 9Based on Example 4, the energy recovery and control unit 9 includes an energy accumulator 28, a hydraulic motor 29, a generator 30, an energy storage module, and a controller 33; The inlet of the accumulator 28 is connected to the double-outlet hydraulic cylinder 26 of the swing arm float wave energy generator 4 via a hydraulic pipeline, and the outlet is connected to the hydraulic motor 29 via a hydraulic pipeline. The hydraulic motor 29 is connected to the generator 30 via a drive, and the generator 30 is electrically connected to the energy storage module; The controller 33 is electrically connected to the tidal range simulation unit, the wave generation unit 6, and the swing arm float wave energy generation device 4, and is used to regulate the operation of each unit.

[0034] The energy storage module includes energy storage module 1 31 and energy storage module 2 32. Both energy storage module 1 31 and energy storage module 2 32 are electrically connected to generator 30 and jointly store the electrical energy generated by generator 30.

[0035] The hydraulic energy generated by the double-rod hydraulic cylinder 26 is first delivered to the accumulator 28. The accumulator 28 can buffer the instantaneous high-pressure hydraulic energy under high-frequency extreme sea conditions to prevent the hydraulic motor 29 from being damaged due to pressure fluctuations. At the same time, the accumulator 28 can store the dispersed hydraulic energy under low sea conditions to prevent energy loss.

[0036] According to the instructions of the controller 33, the accumulator 28 delivers stable hydraulic energy to the hydraulic motor 29, driving the hydraulic motor 29 to rotate; the hydraulic motor 29 drives the generator 30 to generate electricity, and the electrical energy generated by the generator 30 is delivered to the energy storage module 1 31 and the energy storage module 2 32 for storage.

[0037] The controller 33 receives parameters from the sensors of each unit, such as the extension and retraction speed of the electric push rod 10, the pressure of the lifting hydraulic cylinder 15, and the speed of the stepper motor 16, and adjusts the operating status of each unit in real time to ensure the accuracy of the simulated working conditions. At the same time, the controller 33 can control the energy storage module to supply power to the electrical equipment of the system to realize energy circulation.

[0038] Example 6: Please refer to Figures 1-9 This example provides a working method for a simulated multi-condition wave energy generation experimental system, including the following steps: S1: Input an analog signal through controller 33 to start tidal range simulation unit 2, which drives motion platform 3 to rise and fall to simulate tidal level changes; S2: Depending on the sea state to be simulated, selectively activate the high-frequency extreme sea state simulation unit or the low sea state simulation unit of wave generation unit 6. When the high-frequency extreme sea state simulation unit is activated, the lifting hydraulic cylinder 15 drives the moving pulley 20 to move, which in turn drives the swing arm 24 of the swing arm float wave energy generator 4 to swing through the steel wire rope 7. When the low sea state simulation unit is started, the stepper motor 16 drives the T-screw 17 to move, which in turn drives the swing arm 24 to swing through the steel wire rope 7. When simulating wave attenuation conditions, the controller 33 controls the wave generation unit 6 to generate a unidirectional incident wave and adjusts the swing amplitude and period of the two symmetrically arranged swing arm float wave energy generation devices 4. S3: The swing arm 24 swings to drive the double-rod hydraulic cylinder 26 to move, converting mechanical energy into hydraulic energy, which is then transported to the accumulator 28 for storage through the hydraulic pipeline. S4: The accumulator 28 delivers hydraulic energy to the hydraulic motor 29 according to the power generation demand, drives the hydraulic motor 29 to drive the generator 30 to generate electricity, and stores the electrical energy generated by the generator 30 in the energy storage module. S5: During the next experiment, the energy storage module supplies power to the electrical equipment in the experimental system, realizing energy recycling.

[0039] In the method provided in this embodiment, multi-condition simulation and closed-loop energy management are achieved by starting tidal range simulation, sea state simulation, energy conversion, power generation, storage and recycling in stages. Among them, the wave attenuation condition is simulated by the amplitude difference of two sets of symmetrical devices, and the dynamic attenuation process of wave energy is reproduced by the precise adjustment of controller 33, filling the gap that traditional methods cannot simulate this condition.

[0040] The simulation method for wave attenuation fully reproduces the wave energy propagation law in the actual ocean, providing experimental conditions for studying the impact of wave attenuation on power generation performance and solving the problem that traditional methods cannot support this type of research.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A simulated multi-condition wave energy generation experimental system, characterized in that, include: The base (1) has a motion platform (3) on top. Two sets of the swing arm float wave energy generation device (4) are installed symmetrically on the motion platform (3); Tidal range simulation unit (2), the tidal range simulation unit (2) is set on the base (1) and is connected to the motion platform (3) to drive the motion platform (3) to rise and fall; The wave generation unit (6) is also set on the motion platform (3) and is connected to the swing arm float wave energy power generation device (4) to drive its movement, simulating the effect of waves on the power generation device under different sea conditions; And an energy recovery and control unit (9) is connected to the swing arm float wave energy generator (4). The energy recovery and control unit (9) is used to receive the energy generated by the swing arm float wave energy generator (4) and store and regulate it, while providing power to the experimental system.

2. The experimental system for simulating wave energy generation under multiple operating conditions according to claim 1, characterized in that, The tidal range simulation unit (2) includes a motor (11) fixedly mounted on a base (1) and four electric push rods (10) arranged in a rectangular shape. The output end of the motor (11) is connected to a speed reducer (12), and the other two ends of the speed reducer (12) are connected to a drive shaft (14) via a coupling (13). The two drive shafts (14) are driven by two electric push rods (10). The electric push rod (10) and the electric push rod on the corresponding side are connected by a coupling (13) and a drive shaft (14) to achieve synchronous driving of the four electric push rods (10). The telescopic end of the electric push rod (10) is fixedly connected to the motion platform (3) to drive the motion platform (3) to rise and fall in the vertical direction to simulate the tide level.

3. The experimental system for simulating wave energy generation under multiple operating conditions according to claim 1, characterized in that, The wave generation unit (6) includes: Two sets of high-frequency extreme sea state simulation units are connected to two sets of swing arm float wave energy generation devices (4) respectively, and are used to simulate the wave action under high-frequency extreme sea state. Low sea state simulation unit; simultaneously connected to two sets of swing arm float wave energy generation devices (4) to simulate wave action under low sea state conditions.

4. The experimental system for simulating wave energy generation under multiple operating conditions according to claim 3, characterized in that, The high-frequency extreme sea state simulation unit includes: Guide wall panel (19) fixedly installed on motion platform (3); A lifting hydraulic cylinder (15) is fixedly installed on the motion platform (3). A U-shaped guide bracket (22) is installed at the output end of the lifting hydraulic cylinder (15). A movable pulley (20) is installed on the U-shaped guide bracket (22). A wire rope fixing seat (21) is fixedly installed on the upper part of the guide wall plate (19); And a wire rope (7), one end of which is connected to a wire rope fixing seat (21), and the other end is connected to a set of swing arm float wave energy generation devices (4) at the corresponding position after passing over a movable pulley (20).

5. The experimental system for simulating wave energy generation under multiple operating conditions according to claim 3, characterized in that, The low sea state simulation unit includes a guide gantry (18) fixedly installed on the motion platform (3); a stepper motor (16) is fixedly installed at the bottom of the guide gantry (18), and a T-shaped lead screw (17) is fixedly connected to the output end of the stepper motor (16). A U-shaped guide bracket (34) is threadedly connected to the periphery of the T-shaped lead screw (17), and the U-shaped guide bracket (34) and the guide gantry (18) are connected in a limited sliding connection. Two fixed pulleys (8) are provided at the upper part of the guide gantry (18). Two steel wire ropes (7) are fixedly connected to the top of the U-shaped guide support (34). The ends of the two steel wire ropes (7) away from the U-shaped guide support (34) pass around the two fixed pulleys (8) and are connected to the corresponding swing arm float wave energy generator (4).

6. The experimental system for simulating wave energy generation under multiple operating conditions according to claim 1, characterized in that, The swing arm float wave energy generation device (4) includes a conical wave-absorbing float (23), a swing arm (24), a stroke limit bracket (25), a double-outlet hydraulic cylinder (26), and a base bracket (27). The base bracket (27) is fixed on the motion platform (3), and one end of the swing arm (24) is connected to the conical wave-absorbing float (23), and the other end is connected to the output end of the double-outlet hydraulic cylinder (26). The double-rod hydraulic cylinder (26) is fixedly mounted on the base bracket (27) and connected to the energy recovery and control unit (9) through hydraulic pipelines; The travel limit bracket (25) is mounted on the base bracket (27) to limit the swing travel of the swing arm (24).

7. The experimental system for simulating wave energy generation under multiple operating conditions according to claim 6, characterized in that, The energy recovery and control unit (9) includes an energy accumulator (28), a hydraulic motor (29), a generator (30), an energy storage module, and a controller (33). The inlet of the accumulator (28) is connected to the double-outlet hydraulic cylinder (26) of the swing arm float wave energy generator (4) through a hydraulic pipeline, and the outlet is connected to the hydraulic motor (29) through a hydraulic pipeline. The hydraulic motor (29) is connected to the generator (30) via a transmission, and the generator (30) is electrically connected to the energy storage module; The controller (33) is electrically connected to the tidal range simulation unit, the wave generation unit (6) and the swing arm float wave energy power generation device (4) to regulate the operation of each unit.

8. The experimental system for simulating wave energy generation under multiple operating conditions according to claim 7, characterized in that, The energy storage module includes energy storage module one (31) and energy storage module two (32). Both energy storage module one (31) and energy storage module two (32) are electrically connected to the generator (30) and jointly store the electrical energy generated by the generator (30).

9. A working method for a simulated multi-condition wave energy power generation experimental system, characterized in that, The working method includes the following steps: S1: Input the analog signal through the controller (33) to start the tidal range simulation unit (2), drive the motion platform (3) to rise and fall, and simulate the tidal level change; S2: Depending on the sea state to be simulated, selectively activate the high-frequency extreme sea state simulation unit or the low sea state simulation unit of the wave generation unit (6); When the high-frequency extreme sea state simulation unit is started, the lifting hydraulic cylinder (15) drives the pulley (20) to move, and drives the swing arm (24) of the swing arm float wave energy generator (4) to swing through the steel wire rope (7); When the low sea state simulation unit is started, the stepper motor (16) drives the T-shaped lead screw (17) to move, which in turn drives the swing arm (24) to swing through the wire rope (7); When simulating wave attenuation conditions, the controller (33) controls the wave generation unit (6) to generate a unidirectional incident wave and adjusts the swing amplitude and period of the two symmetrically arranged swing arm float wave energy generation devices (4). S3: The swing arm (24) swings to drive the double rod hydraulic cylinder (26) to move, converting mechanical energy into hydraulic energy, and the hydraulic energy is delivered to the accumulator (28) for storage through the hydraulic pipeline; S4: The accumulator (28) delivers hydraulic energy to the hydraulic motor (29) according to the power generation demand, drives the hydraulic motor (29) to drive the generator (30) to generate electricity, and stores the electrical energy generated by the generator (30) in the energy storage module; S5: During the next experiment, the energy storage module supplies power to the electrical equipment in the experimental system, realizing energy recycling.

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