Miniature power generation system integrating power generation and power storage by using wind and light

Abstract

The utility model relates to a miniature power generation device, in particular to a miniature power generation system integrating power generation and power storage by utilizing wind and light, which comprises an intelligent digital control system consisting of a wind collection type wind power generation device, a solar photovoltaic panel power generation device, a battery pack energy storage device, a light storage all-in-one machine and an energy management system. A permanent magnet square wave generator device of the power generation system comprises a wind collecting cover, a clutch, a torque meter, a controller, a generator, an impeller and a wind speed sensor. The direct current bus transmits energy to the storage battery through the DC / DC converter; the permanent magnet square wave generator impeller is arranged in the diffusion type wind collecting cover; a generator outgoing line between the square wave permanent magnet generator and the controller is connected with a slip ring in the connecting cover and is connected to a generator wiring port of the permanent magnet square wave generator controller, and the DC / DC converter module completes voltage reduction of a direct current bus to charge a storage battery; according to the integrated micro power generation system, stable power supply of a micro power station is realized, and the energy utilization efficiency is improved to the greatest extent.

Description

Technical Field

[0001] The utility model relates to a micro power generation system, in particular to a micro power generation system which utilizes wind and light to generate electricity and store electricity in one. Background Art

[0002] As the demand for clean energy continues to increase, wind power and solar power generation have been widely used, but a single form of energy has problems such as instability and intermittency.

[0003] The traditional combination of wind, solar and storage has system incoordination, instability, low power generation efficiency, large wind turbines occupy a large area, and have great requirements and impacts on the environment, making it unsuitable for distributed wind power generation layout. Summary of the invention

[0004] The purpose of the utility model is to provide a micro power generation system that uses wind and light to generate electricity and store electricity. The integrated micro power generation system of the utility model includes a wind-collecting wind power generation device, a solar photovoltaic panel power generation device, a battery energy storage device, a light-storage integrated machine, and an intelligent digital control system composed of an energy management system. The micro power station can achieve stable power supply and maximize energy utilization efficiency.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A micro-generator system that utilizes wind and light to generate electricity and store electricity in one. The wind-collecting permanent magnet square wave generator device of the power generation system includes a wind collecting cover, a clutch, a torque meter, a controller, a permanent magnet square wave generator frame, an impeller, and a wind speed sensor. The permanent magnet square wave generator outputs mechanical torque driven by natural wind to drive the square wave brushless DC generator to operate. The three-phase winding of the generator emits irregular AC power, which is rectified into DC power by a fan controller and then input into a DC bus. The DC bus transmits energy to a battery through a DC / DC converter to complete the battery charging process. The impeller of the permanent magnet square wave generator is arranged in a diffuse wind collecting cover. The generator output line between the square wave permanent magnet generator and the controller is connected to the slip ring inside the connecting cover and connected to the generator connection port of the permanent magnet square wave generator controller, and the controller circuit breaker port is connected to a battery pack. The rectifier module completes the PWM rectification on the motor side and performs boosting and is incorporated into the DC bus. The DC / DC converter module completes the voltage reduction of the DC bus to charge the battery. The rate module is provided with input filtering and output filtering circuits; the control system is provided with a main control chip, a PWM drive circuit, an ADC module, a logic control, a position detection and a 485 communication circuit; the host computer is provided with a liquid crystal display panel, the system working status and the real-time voltage and current of the machine side and the grid side and their power, working status and fault code; one end of the power module is connected to the output of the permanent magnet square wave generator, and the other end is connected to the grid; a wind-collecting permanent magnet square wave generator is installed on the permanent magnet square wave generator pole of this system; the power generation system includes a permanent magnet square wave generator, a wind turbine controller, a photovoltaic storage integrated machine, a photovoltaic power generation component, a battery pack and an energy management system; the wind power generation wind collecting cover device includes a wind collecting cover, a generator, a blade, a support arm, a connecting cover, a hub and a support rod; the wind collecting cover is connected to one end of the support arm, and the other end of the support arm is fixed to the connecting cover; the front end of the connecting cover is fixed to the rear end cover of the permanent magnet square wave generator through the engine frame; the rotating shaft at the lower end of the connecting cover is connected to the support rod; the blade is fixed on the hub, and the hub is fixed to the shaft of the permanent magnet square wave generator.

[0007] The micro power generation system that utilizes wind and light to generate electricity and store electricity in one, the wind collecting hood adopts an aerodynamic shape of an inlet contraction section, an intermediate diffusion section, and an outlet vertical plate, and utilizes the negative pressure vortex generated downstream of the vertical plate to induce more fluid to enter the wind collecting hood.

[0008] The micro power generation system utilizing wind and light to generate electricity and store electricity in one, the wind collecting hood is composed of three parts: an inlet contraction section, a shorter outlet diffusion section and an outlet vertical plate rim.

[0009] The micro power generation system utilizing wind and light to generate electricity and store electricity, the wind power generation part includes a permanent magnet square wave generator, a square wave brushless DC generator, a rectifier module, a DC / DC converter module and a battery part.

[0010] The micro power generation system utilizing wind and light to generate electricity and store electricity in one, the system feedback power generation process is as follows: the permanent magnet square wave generator outputs mechanical torque under the drive of natural wind, driving the square wave brushless DC generator to operate, the three-phase winding of the generator emits AC power which is rectified into DC power by the rectifier and then input into the DC bus, while the MCU constantly monitors the voltage and current of the square wave motor and the battery side, calculates the position sensorless control algorithm, calculates and outputs PWM modulation waves according to the detected amount, drives the power switch tube in the rectifier on the machine side and the DC / DC converter to conduct modulation, and the DC bus transmits energy to the battery through the DC / DC converter to complete the battery charging process.

[0011] The micro power generation system that utilizes wind and light to generate electricity and store electricity, the power station intelligent digital control system includes a power module, a control system, a host computer, a mechanical brake, a voltage detection module, a drive circuit, a non-commutation phase current selection module and a position sensor-free detection module, a photovoltaic control module, energy management, data transmission, and remote control.

[0012] The micro power generation system utilizing wind and light to generate electricity and store electricity in one, the wind turbine controller has a single-phase / three-phase off-grid or grid-connected mode.

[0013] The micro power generation system that utilizes wind and light to generate electricity and store electricity, the micro power generation device includes a permanent magnet square wave generator, blades, an upper photovoltaic module, a lower photovoltaic module, a control box, and a rod body; wherein the permanent magnet square wave generator, the photovoltaic module, and the control box are all centrally fixed on the permanent magnet square wave generator rod body.

[0014] The micro power generation system that utilizes wind and light to generate electricity and store electricity, the control device includes a switch assembly, a photovoltaic storage integrated machine, a fan controller, a battery pack, a control box, and an energy management system; the output lines of the photovoltaic assembly and the permanent magnet square wave generator are introduced into the control box through the inside of the pole body, and the control box outputs the required AC power line to the user.

[0015] The advantages and effects of the utility model are:

[0016] The utility model of the wind, solar and storage integrated micro power generation system includes a wind-collecting wind power generation system which is composed of a solar photovoltaic panel power generation device, a battery energy storage device, a photovoltaic storage integrated machine, and an energy management system. The intelligent digital control system can realize real-time monitoring and precise regulation, including wind-collecting wind power generation devices, solar power generation devices and storage systems. The wind-collecting wind power generation device can increase the wind speed by 1.25 times to achieve efficient collection and conversion of wind energy; the solar power generation device is used to convert solar energy into electrical energy. The energy storage device is used to store excess electrical energy and release electrical energy to maintain stable power supply when power generation is insufficient. The intelligent digital control system efficiently manages the entire micro power station and optimizes the coordinated control of the energy transport device to achieve stable power supply for the micro power station and maximize energy utilization efficiency.

[0017] The utility model adopts an intelligent integrated controller, which integrates rectification, pump-up and pump-down, inversion and control. It can not only improve the wind speed utilization range of the permanent magnet square wave generator, but also effectively improve the power generation efficiency of the permanent magnet square wave generator set, and cancel the unloader, reducing the volume and weight by 2 / 3, low failure rate, and reducing operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the system diagram of the utility model wind, solar and storage integrated power station;

[0019] Figure 2 This is the principle diagram of the wind-collecting permanent magnet square wave generator of the utility model;

[0020] Figure 3 This is a curve diagram of the speed increase effect of the wind collecting hood of the utility model;

[0021] Figure 4 This is the current waveform diagram of the pure square wave permanent magnet motor of the utility model;

[0022] Figure 5 This is the opposite potential waveform diagram of the utility model;

[0023] Figure 6 The connection between the square wave permanent magnet generator and the controller of the utility model is shown in the figure;

[0024] Figure 7 The connection diagram of the wind controller of the utility model;

[0025] Figure 8 This is the automatic control principle diagram of the utility model system;

[0026] Fig. 9 This is a schematic diagram of the integrated structure of the micro power generation device of the utility model;

[0027] Fig.10 This is a schematic diagram of the control device of the utility model;

[0028] Fig.11 This is a three-dimensional diagram of the wind collecting hood of the utility model;

[0029] Fig.12 This is a side view of the wind collecting hood of the utility model;

[0030] Fig.13 The stator winding of the utility model is a concentrated diagram;

[0031] Fig.14 This is a cross-sectional view of the pure square wave permanent magnet motor body of the utility model;

[0032] Fig.15 This is a schematic diagram of current setting and current peak control of the utility model;

[0033] Fig.16 This is a schematic diagram of an embodiment of the integrated micro power generation system of the utility model;

[0034] Fig.17 This is a schematic diagram of the inlet and outlet lines of the control box of the utility model;

[0035] Fig.18 This is a connection diagram between the energy management and system of the utility model.

[0036] Components in the figure: wind collecting hood 1, generator frame 2, blades 3, upper photovoltaic module 4, lower photovoltaic module 5, control box 6, rod body 7, switch assembly 8, photovoltaic storage integrated machine 9, fan controller 10, battery pack 11, control box body 12, energy management system 13, wind collecting hood shell 14, permanent magnet square wave generator 15, blades 16, support arm 17, connecting cover 18, hub 19, support rod 20. DETAILED DESCRIPTION

[0037] The utility model is described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0038] The utility model discloses a micro power generation system which utilizes wind and light to generate electricity and store electricity. Figure 1 Schematic diagram of the integrated power generation system, the wind-collecting permanent magnet square wave generator device includes a high-efficiency wind collector, a clutch, a torque meter, a controller, a permanent magnet square wave generator, an impeller, and a wind speed sensor. The compact wind collector with an aerodynamic shape of an inlet contraction section + an intermediate diffusion section + an outlet vertical plate utilizes the negative pressure vortex generated downstream of the vertical plate to induce more fluid to enter the wind collector, and the wind collection coefficient reaches 1.25, thereby doubling the power of the wind-collecting permanent magnet square wave generator. The ratio of the wind speed at the inlet of the diffuser wind collector to the distant incoming wind speed is as high as 1.8. Since the power of the permanent magnet square wave generator is proportional to the cube of the incoming wind speed, the wind-collecting permanent magnet square wave generator has higher output power and wind energy utilization efficiency, and the wind energy utilization coefficient based on the swept area of ​​the rotating wind wheel is as high as 0.71.

[0039] Figure 2 This is the principle diagram of the wind-collecting permanent magnet square wave generator of the utility model. The permanent magnet square wave generator outputs mechanical torque under the drive of natural wind, driving the square wave brushless DC generator to operate. The three-phase winding of the generator emits irregular AC power, which is rectified into DC power by the fan controller and then input into the DC bus. The DC bus transmits energy to the battery through the DC / DC converter to complete the battery charging process.

[0040] Figure 3 The wind collecting hood is a curve diagram of the speed increase effect of the utility model. The wind collecting hood isolates the influence of the vortex on the surrounding environment and vegetation, and prevents birds from being sucked into the vortex. Once the blades fall off, the wind collecting hood prevents the blades from splashing around to avoid secondary damage. The wind resistance principle is used to achieve automatic wind chasing, and the yaw with a high failure rate is eliminated. The wind speed at the inlet of the diffusion-type wind collecting hood is 1.8 times the wind speed of the distant incoming flow, and the speed increase is obvious. The impeller of the permanent magnet square wave generator is placed in the diffusion-type wind collecting hood, which is a diffusion-enhanced permanent magnet square wave generator. The experimental results show that the power extracted from the wind by the diffusion-enhanced permanent magnet square wave generator is much greater than that of an isolated generator (generator without a wind collecting hood) with the same wind rotor diameter. Compared with an isolated generator with the same wind rotor diameter, the use of a wing profile ring around the wind rotor increases the extracted power by 2 times. The diffusion-type wind collecting hood consists of three parts: an inlet contraction section, a shorter outlet diffusion section, and an outlet vertical plate (wheel rim). It is achieved by meeting the speed increase requirement while reducing the length of the wind collecting hood. A wind collecting hood with a vertical plate is used, and the principle of wind resistance is used to realize automatic wind chasing. The yaw tail wing wind chasing system is eliminated, thus improving the reliability of the wind turbine.

[0041] Figure 4 This is the current waveform diagram of the pure square wave permanent magnet motor of the utility model; Figure 5 This is the opposite potential waveform of the utility model; the pure square wave permanent magnet generator has a large power density, which is 1.15 times that of the permanent magnet synchronous machine, a wide high-efficiency zone, and can operate efficiently under 25%-125% load, achieving efficient power generation under different wind speeds. The pure square wave permanent magnet generator and the intelligent digital controller are used to achieve a 10-fold pump-up and pump-down ratio, which can increase the fan speed regulation range by 3 times.

[0042] The combination between the square wave permanent magnet generator and the controller is as follows Figure 6 The generator output is connected to the slip ring inside the connection cover and connected to the permanent magnet square wave generator controller generator connection port, and the controller circuit breaker port is connected to the battery pack. See the wind controller Figure 7The wind power generation system is mainly composed of a permanent magnet square wave generator, a square wave brushless DC generator, a rectifier module, a DC / DC converter module and a battery. The rectifier module completes the PWM rectification on the motor side and boosts the voltage into the DC bus. The DC / DC converter module completes the voltage reduction of the DC bus to charge the battery, and plays a role in maintaining the constant voltage of the DC bus when the natural wind speed changes drastically and affects the stability of the DC bus. At the same time, compared with ordinary off-grid power generation systems, three-phase off-grid wind power generation systems have a greater current carrying capacity when charging the battery. The controller is the part from the square wave brushless DC generator to the battery. It is divided into a control board and a power board in terms of PCB structure. The control board is responsible for processing various detection signals and drive signals, and the power board is responsible for the power flow of the rectifier and DC / DC converter. The entire feedback power generation process is as follows: the permanent magnet square wave generator outputs mechanical torque driven by natural wind, driving the square wave brushless DC generator to operate. The three-phase winding of the generator emits AC power, which is rectified into DC power by the rectifier and then input into the DC bus. At the same time, the MCU monitors the voltage and current of the square wave motor and the battery side at all times, calculates the position sensorless control algorithm, and outputs PWM modulation waves based on the detected quantity, driving the power switch tubes in the rectifier and DC / DC converter on the machine side for conduction modulation. The DC bus transmits energy to the battery through the DC / DC converter to complete the battery charging process.

[0043] The utility model power station intelligent digital control system comprises a power module, a control system, a host computer, a mechanical brake, a voltage detection module, a drive circuit, a non-commutation phase current selection module and a position sensorless detection module, a photovoltaic control module, energy management, data transmission, and remote control; the power module is provided with an input filter and an output filter circuit; the control system is provided with a main control chip, a PWM drive circuit, an ADC module, logic control, position detection and a 485 communication circuit; the host computer is provided with a liquid crystal display panel, a system working state and real-time voltage and current of the machine side and the grid side and their power, working state and fault code; one end of the power module is connected to the output of the permanent magnet square wave generator, and the other end is connected to the grid; the permanent magnet square wave generator control applied to single-phase grid-connected or three-phase grid-connected operation improves the wind speed utilization range of the permanent magnet square wave generator set, and does not require a load unloading unit.

[0044] The utility model fan controller has multiple modes such as single-phase / three-phase off-grid or grid-connected. The power consumption of the brake controller during operation is 1 / 10 of that of the usual brake controller.

[0045] Working principle of the utility model: This system uses "one pole and two wires" to install a wind-collecting permanent magnet square wave generator on the permanent magnet square wave generator pole, a permanent magnet generator with a pure square wave current waveform, a high-efficiency solar photovoltaic panel and a wind-solar-storage intelligent control system tailored for this system.

[0046] The wind-collecting permanent magnet square wave generator converts wind energy into electrical energy, and the solar panel converts light energy into electrical energy. When the sun is sufficient or the wind is strong, part of the generated electricity is directly supplied to the electrical equipment, and the other part is transmitted to the energy storage device (such as a battery) for storage. When the sun is insufficient or the wind is weak or even no wind, the electricity stored in the energy storage device will be released to continue to supply power to the electrical equipment, thereby ensuring a continuous and stable supply of electricity.

[0047] Figure 8 This is the automatic control schematic diagram of the utility model system. The entire system is equipped with an intelligent digital control system to monitor and remotely regulate the distribution, storage and release of electric energy in real time, ensuring efficient, safe and stable operation of the system, achieving wind and solar complementarity and effective coordination with energy storage to meet electricity demand at different time periods and under different load conditions.

[0048] Fig. 9 It is a schematic diagram of the integrated structure of the micro power generation device of the utility model, and its structure includes a wind collecting cover 1, a generator frame 2, blades 3, an upper photovoltaic module 4, a lower photovoltaic module 5, a control box 6, and a rod body 7.

[0049] Fig.10 It is a schematic diagram of the control device of the utility model, and its structure includes a switch assembly 8, a photovoltaic storage integrated machine 9, a fan controller 10, a battery pack 11, a control box 12, and an energy management system 13.

[0050] Wind collecting hood device for wind power generation Fig.11 , Fig.12 ; It includes a wind collecting cover shell 14, a permanent magnet square wave generator 15, a blade 16, a support arm 17, a connecting cover 18, a hub 19, and a support rod 20; the wind collecting cover shell 14 is connected to one end of the support arm 17, and the other end of the support arm 17 is fixed to the connecting cover 18. The front end of the connecting cover 18 is fixed to the rear end cover of the permanent magnet square wave generator 15 through the engine frame 2. The lower end rotary shaft of the connecting cover 18 is connected to the support rod 20. The blade 16 is fixed on the hub 19, and the hub 19 is fixed to the shaft of the permanent magnet square wave generator 15.

[0051] In the dynamic operation state, wind enters from the windward port of the wind collecting cover shell 14 and flows out from the air outlet, blowing the blades 16 to rotate and driving the permanent magnet square wave generator 15 to operate.

[0052] The pure square wave permanent magnet generator and control system of the utility model include the following three elements:

[0053] 1. The waveform of the opposite potential of the winding is a trapezoidal wave;

[0054] 2. The width of the back electromotive force flat top is ≥120° electrical angle;

[0055] 3. The winding current waveform is a square wave.

[0056] The three elements of the permanent magnet square wave form an opposite potential trapezoidal wave. The rotor poles of the square wave permanent magnet motor adopt the tile-shaped magnetic steel surface mounting form, with a large pole arc coefficient. After the magnetic circuit design, the air gap flux density of the trapezoidal wave can be obtained. The stator winding adopts a concentrated full-pitch winding, so the induced back electromotive force is also a trapezoidal wave. Its structure is shown in Fig.13 , Fig.14 .

[0057] The formation of the current rectangular waveform is completed by the controller, and the peak current control strategy is adopted to realize the permanent magnet square wave motor drive current as a square wave. Fig.15 :t 1 ~t 3 is a control cycle, and the control cycle is a constant value. When the current setting is greater than the X current in the motor stator winding, the two switch tubes of the upper and lower bridge arms are turned on at the same time to increase the current. When the current setting is less than the current in the motor stator winding, one of the switch tubes is turned off to reduce the current, and the switch tube is turned on again when the time reaches a control cycle. Through current peak control, the current in the motor stator winding can track the current setting.

[0058] The flat top width of 120° is solved by using 6-phase or double three-phase windings, reducing the original 60°E phase width to 30 0 E-phase bandwidth, E Φ The flat top width starts from 97 0 Increase E to 127 0 E.

[0059] Power generation system Fig.16 , which consists of a permanent magnet square wave generator, a fan controller, a photovoltaic storage integrated machine, a photovoltaic power generation module, a battery pack and an energy management system. Under the sunlight, the photovoltaic module emits direct current through the photovoltaic storage integrated machine controller. The photovoltaic input is controlled by a fully digital intelligent control algorithm, and the maximum power is output. The output current and voltage are detected in real time to ensure the normal charging of the battery. The photovoltaic storage integrated machine: It is a multifunctional off-grid photovoltaic inverter that integrates an MPPT photovoltaic charging controller, a high-frequency pure sine wave inverter and a UPS functional module. It is very suitable for off-grid backup power supply and self-generation and self-use systems.

[0060] Energy Management System (EMS) coordinates the operation of wind, solar and energy storage systems, so that the energy storage system works with wind power, photovoltaic and energy storage systems to complement each other. When there is sufficient sunshine and wind during the day, the photovoltaic and wind power systems first ensure that electricity is provided to the user's load. The excess electricity that the load cannot absorb is used to charge the energy storage system. When the photovoltaic system is shut down at night, the user's load is supplied by wind power or energy storage power stations.

[0061] EMS provides integrated interface customization function, supporting the graphical display of key information such as dashboard, curve, table plan, etc. One pole and two lines: wind turbine controller, photovoltaic storage integrated machine, battery pack, and energy management system are integrated in the control box. Figure 7 The permanent magnet square wave generator, photovoltaic modules, and control box are all centrally fixed on the permanent magnet square wave generator pole. Fig.17 : The outgoing wires of photovoltaic modules and permanent magnet square wave generators are introduced into the control box through the inside of the pole body, and the control box outputs the required AC power lines to the user.

[0062] Energy management and system connections such as Fig.18 :The controller is the core of the system hardware. The micro power controller is mainly responsible for the parameter acquisition of the corresponding micro power and the control and operation of local equipment; the central controller is responsible for coordinating the reliable operation of each distributed power source in the system. The CAN bus communication method can achieve rapid response and reliable communication between the central controller and the underlying distributed power controller; the host computer is responsible for collecting and storing key data of each power generation unit in the microgrid and real-time monitoring of the operating status of the equipment in the system.

[0063] The EMS system adopts a closed-loop appropriate control strategy and an adaptive dynamic programming strategy. In terms of specific control strategies, the system should implement multi-scenario energy scheduling. When transient changes occur in the system operation, the system can quickly restore the steady-state working state through algorithms.

[0064] The communication function module of the microgrid EMS performs energy management on the one hand, while also having functions such as equipment assembly, online debugging, and cloud monitoring, which reduces system costs and increases equipment assembly efficiency.

Claims

1. A micro power generation system that uses wind and light to generate electricity and store electricity, characterized in that: The permanent magnet square wave generator device of the power generation system includes a wind collecting cover, a clutch, a torque meter, a controller, a generator, an impeller, and a wind speed sensor; The three-phase winding of the generator emits AC power, which is rectified into DC power input and connected to the DC bus by the fan controller. The DC bus transmits energy to the battery through the DC / DC converter. The impeller of the permanent magnet square wave generator is set in a diffuse wind collector. The generator output line between the square wave permanent magnet generator and the controller is connected to the slip ring inside the connection cover and connected to the generator connection port of the permanent magnet square wave generator controller, and the controller circuit breaker port is connected to the battery pack. The rectifier module completes the PWM rectification on the motor side and boosts it into the DC bus. The DC / DC converter module completes the voltage reduction of the DC bus to charge the battery. The power module is equipped with input filtering and output filtering circuits. The control system is equipped with a main control chip, PWM drive circuit, ADC module, logic control, position detection and 485 communication circuit. The host computer is equipped with a liquid crystal display panel, system working status and real-time voltage and current on the machine side and grid side, as well as power and working The invention discloses a wind-collecting type permanent magnet square wave generator, a wind-collecting type permanent magnet square wave generator, a wind turbine controller, a photovoltaic storage integrated machine, a photovoltaic power generation component, a battery pack and an energy management system. The wind power generation wind collecting cover device comprises a wind collecting cover (14), a generator (15), a blade (16), a support arm (17), a connecting cover (18), a wheel hub (19) and a support rod (20). The wind collecting cover (14) is connected to one end of the support arm (17), and the other end of the support arm (17) is fixed to the connecting cover (18). The front end of the connecting cover (18) is fixed to the rear end cover of the permanent magnet square wave generator (15). The lower end rotary shaft of the connecting cover (18) is connected to the support rod (20). The blade (16) is fixed to the wheel hub (19), and the wheel hub (19) is fixed to the shaft of the permanent magnet square wave generator (15).

2. According to claim 1, a micro power generation system utilizing wind and light to generate electricity and store electricity is characterized in that: The wind collecting hood adopts an aerodynamic shape of an inlet contraction section, a middle diffusion section and an outlet vertical plate.

3. A micro power generation system utilizing wind and light to generate electricity and store electricity as described in claim 2, characterized in that: The wind collecting hood is composed of three parts: an inlet contraction section, a shorter outlet diffusion section and an outlet vertical plate rim.

4. According to claim 1, a micro power generation system utilizing wind and light to generate electricity and store electricity is characterized in that: The wind power generation part includes a permanent magnet square wave generator, a square wave brushless DC generator, a rectifier module, a DC / DC converter module and a battery part.

5. According to claim 1, a micro power generation system utilizing wind and light to generate electricity and store electricity is characterized in that: The fan controller has a single-phase / three-phase off-grid or grid-connected mode.

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