Power supply device based on wind power generation motor

Abstract

The utility model provides a power supply device based on a wind power generation motor, which relates to the technical field of charging and comprises a wind power generator, a rectifying circuit, a voltage detection device, an energy storage battery E and a Boost circuit. The input end of the rectifying circuit is connected with the output end of the wind driven generator and used for rectifying and converting alternating current output by the wind driven generator into direct current; the Boost circuit is used for boosting the direct current voltage of the power supply device so as to boost the voltage of the direct current output by the rectifying circuit to be within the charging voltage range of the energy storage battery; and the energy storage battery E is used for storing the direct-current voltage of the power supply device. According to the utility model, the voltage output by the wind driven generator can be boosted to the charging voltage level of the energy storage battery, so that the energy storage battery can be effectively charged continuously in a low-wind-speed environment, and the capture and utilization efficiency of wind energy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, in particular to a power supply device based on a wind power generator. Background Art

[0002] As a clean and renewable energy source, wind power has gained widespread attention and application worldwide in recent years. Wind turbines provide an important supplement to the power system by capturing wind energy and converting it into electrical energy.

[0003] Most modern wind turbines, especially those designed to directly charge energy storage batteries, rely on a core operating mechanism that matches the voltage produced by the generator with the charging voltage required by the energy storage battery. Ideally, the wind turbine's output voltage should be higher than the battery's charging voltage to ensure that current can flow smoothly to charge the battery.

[0004] However, the speed of a wind turbine is one of the key factors that determine its output voltage. When the wind speed reaches or exceeds the rated wind speed of the wind turbine, it drives the wind turbine to generate sufficient voltage and current to meet the charging needs of the energy storage battery. However, the actual situation is often complex and changeable. Especially when the wind speed is low or the wind force is insufficient, the speed of the wind turbine will drop accordingly, which directly leads to a decrease in the output voltage of the wind turbine. Once the output voltage of the wind turbine is lower than the charging voltage of the energy storage battery, the current will not flow from the wind turbine to the energy storage battery. At this time, although the wind turbine is still rotating, it is actually in an "idling" state and cannot convert the captured wind energy into electrical energy for storage, and cannot provide effective charging to the energy storage battery. This is a shortcoming of the existing technology. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a power supply device based on a wind power generator motor, which can be equipped with a Boost circuit to increase the voltage output by the wind generator to the charging voltage level of the energy storage battery, so that even in a low wind speed environment, it can continue to provide effective charging to the energy storage battery, thereby improving the efficiency of capturing and utilizing wind energy.

[0006] The utility model provides a power supply device based on a wind power generator, the device comprising a wind power generator, a rectifier circuit, a voltage detection device, an energy storage battery E and a Boost boost circuit;

[0007] The input end of the rectifier circuit is connected to the output end of the wind turbine generator, and is used to rectify the AC power output by the wind turbine generator into DC power;

[0008] The output end of the rectifier circuit is connected to the input end of the Boost circuit;

[0009] The boost circuit is used to boost the DC voltage of the power supply device to increase the voltage of the DC power output by the rectifier circuit to within the charging voltage range of the energy storage battery;

[0010] The positive output terminal of the Boost circuit is connected to the positive electrode of the energy storage battery E, and the negative output terminal of the Boost circuit is connected to the negative electrode of the energy storage battery E;

[0011] The energy storage battery E is used to store the DC voltage of the power supply device;

[0012] The positive electrode of the energy storage battery E is used to connect to the positive power input terminal of the load, and the negative electrode of the energy storage battery E is used to connect to the negative power input terminal of the load.

[0013] Furthermore, the rectifier circuit adopts a three-phase uncontrolled rectifier bridge; the three-phase uncontrolled rectifier bridge includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4, a fifth rectifier diode D5 and a sixth rectifier diode D6;

[0014] The wind turbine generator output terminal includes an A-phase AC power output terminal, a B-phase AC power output terminal and a C-phase AC power output terminal;

[0015] The A-phase AC power output terminal is connected to the anode of the first rectifier diode D1 and the cathode of the fourth rectifier diode D4 respectively;

[0016] The B-phase AC power output terminal is connected to the anode of the second rectifier diode D2 and the cathode of the fifth rectifier diode D5 respectively;

[0017] The C-phase AC power output terminal is connected to the anode of the third rectifier diode D3 and the cathode of the sixth rectifier diode D6 respectively;

[0018] The cathode of the first rectifier diode D1, the cathode of the second rectifier diode D2 and the cathode of the third rectifier diode D3 are connected to lead out to the positive output end of the rectifier circuit;

[0019] The anode of the fourth rectifier diode D4, the anode of the fifth rectifier diode D5 and the anode of the sixth rectifier diode D6 are connected to lead out to the negative output end of the rectifier circuit;

[0020] The positive output terminal of the rectifier circuit and the negative output terminal of the rectifier circuit constitute the output terminal of the rectifier circuit.

[0021] Furthermore, the power supply device further includes a voltage detection device, a control module, a load unloading device, a first switch S1, a second switch S2 and a third switch S3;

[0022] The voltage detection device is installed on the connection line between the rectifier circuit and the Boost circuit, and is used to detect the DC voltage output by the rectifier circuit;

[0023] The input end of the unloading device is connected to the first end of the first switch S1, the first end of the second switch S2 and the first end of the third switch S3 respectively;

[0024] The second end of the first switch S1 is connected to the A-phase AC power output end;

[0025] The second end of the second switch S2 is connected to the B-phase AC power output end;

[0026] A second end of the third switch S3 is connected to the C-phase AC power output end;

[0027] The voltage detection device is connected to the control module;

[0028] The voltage detection device is used to send the detected DC voltage to the control module;

[0029] The control module is electrically connected to the first switch S1, the second switch S2 and the third switch S3 respectively;

[0030] The control module is used to determine and, when it is determined that the DC voltage detected by the voltage detection device exceeds a preset charging voltage threshold of the energy storage battery E, control the first switch S1, the second switch S2, and the third switch S3 to close, so as to unload the load through the unloading device;

[0031] The first switch S1 , the second switch S2 , and the third switch S3 are in an open state by default.

[0032] Furthermore, the power supply device further includes a photoelectric encoder, a first resistor R1 and a second resistor R2;

[0033] The first end of the first resistor R1 is connected to the positive electrode of the energy storage battery E, the second end of the first resistor R1 is connected to the positive input end of the power supply of the photoelectric encoder and the first end of the second resistor R2 respectively, and the negative output end of the power supply of the photoelectric encoder and the second end of the second resistor R2 are connected to the negative electrode of the energy storage battery E respectively;

[0034] The photoelectric encoder is installed on the output shaft of the wind turbine;

[0035] The photoelectric encoder is electrically connected to the control module;

[0036] The photoelectric encoder is used to measure the speed of the output shaft of the wind turbine and send it to the control module;

[0037] The control module is electrically connected to the Boost circuit to control the Boost circuit to boost the DC voltage output by the rectifier circuit when the speed collected by the photoelectric encoder is lower than a preset speed threshold.

[0038] Furthermore, the Boost circuit includes a boost switch Q1, an inductor L, a boost diode D7, and a second capacitor C2;

[0039] The positive output terminal of the voltage detection device is connected to the first terminal of the inductor L, the second terminal of the inductor L is connected to the source of the boost switch Q1 and the anode of the boost diode D7 respectively, the cathode of the boost diode D7 is connected to the positive electrode of the second capacitor C2, the drain of the boost switch Q1 is connected to the negative output terminal of the voltage detection device and the second terminal of the second capacitor C2 respectively, and the gate of the boost switch Q1 is connected to the control module;

[0040] The cathode of the boost diode D7 is connected to the positive electrode of the second capacitor C2 and then leads to the positive output end of the Boost circuit;

[0041] The drain of the boost switch tube Q1 is connected to the negative output end of the voltage detection device and the second end of the second capacitor C2 respectively, and then leads to the negative output end of the Boost circuit.

[0042] Furthermore, the control module adopts a single-chip microcomputer, and the model of the single-chip microcomputer is PIC16F886.

[0043] Furthermore, the rated power of the wind turbine is 100W or 200W.

[0044] It can be seen from the above technical solutions that the present invention has the following advantages:

[0045] The utility model provides a Boost circuit to increase the voltage output by the wind turbine to the charging voltage level of the energy storage battery, so that even in a low wind speed environment, it can continue to provide effective charging to the energy storage battery, thereby improving the efficiency of capturing and utilizing wind energy.

[0046] This utility model incorporates a rectifier circuit and voltage detection device to ensure that the AC power output by the wind turbine at different wind speeds is efficiently converted into stable DC power and stored in the energy storage battery. Furthermore, when the voltage provided by the wind turbine exceeds the charging voltage threshold of the energy storage battery, a load shedding device is connected to regulate the voltage in the circuit, preventing damage to the energy storage battery due to excessive voltage.

[0047] In addition, the utility model has a reliable design principle, a simple structure and a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0049] Figure 1 This is a circuit diagram of the power supply device based on the wind power generator of the utility model;

[0050] Figure 2 This is a circuit diagram of a rectifier circuit of a power supply device based on a wind power generator according to the present invention;

[0051] Figure 3 This is a circuit diagram of the Boost circuit of the power supply device based on the wind power generator described in the utility model. DETAILED DESCRIPTION

[0052] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0053] like Figure 1 As shown, the utility model provides a power supply device based on a wind power generator, the device includes a wind power generator, the device also includes a rectifier circuit, a voltage detection device, an energy storage battery E and a Boost boost circuit;

[0054] The input end of the rectifier circuit is connected to the output end of the wind turbine generator, and is used to rectify the AC power output by the wind turbine generator into DC power;

[0055] The output end of the rectifier circuit is connected to the input end of the Boost circuit;

[0056] The boost circuit is used to boost the DC voltage of the power supply device to increase the voltage of the DC power output by the rectifier circuit to within the charging voltage range of the energy storage battery;

[0057] The positive output terminal of the Boost circuit is connected to the positive electrode of the energy storage battery E, and the negative output terminal of the Boost circuit is connected to the negative electrode of the energy storage battery E;

[0058] The energy storage battery E is used to store the DC voltage of the power supply device;

[0059] The positive electrode of the energy storage battery E is used to connect to the positive power input terminal of the load, and the negative electrode of the energy storage battery E is used to connect to the negative power input terminal of the load.

[0060] As an embodiment of the present invention, Figure 2 As shown, the rectifier circuit adopts a three-phase uncontrolled rectifier bridge; the three-phase uncontrolled rectifier bridge includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4, a fifth rectifier diode D5 and a sixth rectifier diode D6;

[0061] The wind turbine generator output terminal includes an A-phase AC power output terminal, a B-phase AC power output terminal and a C-phase AC power output terminal;

[0062] The A-phase AC power output terminal is connected to the anode of the first rectifier diode D1 and the cathode of the fourth rectifier diode D4 respectively;

[0063] The B-phase AC power output terminal is connected to the anode of the second rectifier diode D2 and the cathode of the fifth rectifier diode D5 respectively;

[0064] The C-phase AC power output terminal is connected to the anode of the third rectifier diode D3 and the cathode of the sixth rectifier diode D6 respectively;

[0065] The cathode of the first rectifier diode D1, the cathode of the second rectifier diode D2 and the cathode of the third rectifier diode D3 are connected to lead out to the positive output end of the rectifier circuit;

[0066] The anode of the fourth rectifier diode D4, the anode of the fifth rectifier diode D5 and the anode of the sixth rectifier diode D6 are connected to lead out to the negative output end of the rectifier circuit;

[0067] The positive output terminal of the rectifier circuit and the negative output terminal of the rectifier circuit constitute the output terminal of the rectifier circuit.

[0068] The positive output terminal of the rectifier circuit is connected to the first terminal of the first capacitor C1, and the negative output terminal of the rectifier circuit is connected to the second terminal of the first capacitor C1. The first capacitor C1 is used to smooth the output voltage of the rectifier circuit, reduce the ripple factor of the output voltage of the rectifier circuit, and realize the filtering function.

[0069] As an embodiment of the present utility model, the power supply device further includes a voltage detection device, a control module, a load unloading device, a first switch S1, a second switch S2 and a third switch S3;

[0070] The voltage detection device is installed on the connection line between the rectifier circuit and the Boost circuit, and is used to detect the DC voltage output by the rectifier circuit;

[0071] The input end of the unloading device is connected to the first end of the first switch S1, the first end of the second switch S2 and the first end of the third switch S3 respectively;

[0072] The second end of the first switch S1 is connected to the A-phase AC power output end;

[0073] The second end of the second switch S2 is connected to the B-phase AC power output end;

[0074] A second end of the third switch S3 is connected to the C-phase AC power output end;

[0075] The voltage detection device is connected to the control module;

[0076] The voltage detection device is used to send the detected DC voltage to the control module;

[0077] The control module is electrically connected to the first switch S1, the second switch S2 and the third switch S3 respectively;

[0078] The control module is used to determine and, when it is determined that the DC voltage detected by the voltage detection device exceeds a preset charging voltage threshold of the energy storage battery E, control the first switch S1, the second switch S2, and the third switch S3 to close, so as to unload the load through the unloading device;

[0079] The first switch S1 , the second switch S2 , and the third switch S3 are in an open state by default.

[0080] It should be noted that the output end of the rectifier circuit is connected to the voltage detection device after being connected to the first capacitor C1.

[0081] As an embodiment of the present utility model, the power supply device further includes a photoelectric encoder, a first resistor R1 and a second resistor R2;

[0082] The first end of the first resistor R1 is connected to the positive electrode of the energy storage battery E, the second end of the first resistor R1 is connected to the positive input end of the power supply of the photoelectric encoder and the first end of the second resistor R2 respectively, and the negative output end of the power supply of the photoelectric encoder and the second end of the second resistor R2 are connected to the negative electrode of the energy storage battery E respectively;

[0083] The photoelectric encoder is installed on the output shaft of the wind turbine;

[0084] The photoelectric encoder is electrically connected to the control module;

[0085] The photoelectric encoder is used to measure the speed of the output shaft of the wind turbine and send it to the control module;

[0086] The control module is electrically connected to the Boost circuit to control the Boost circuit to boost the DC voltage output by the rectifier circuit when the speed collected by the photoelectric encoder is lower than a preset speed threshold.

[0087] It should be noted that, in this embodiment, since the voltage output by the Boost circuit is 24V, but the rated voltage of the photoelectric encoder is 5V, the first resistor R1 and the second resistor R2 are set to perform voltage division and current limiting to meet the rated voltage requirement of the photoelectric encoder.

[0088] like Figure 3 As shown, the Boost circuit includes a boost switch Q1, an inductor L, a boost diode D7, and a second capacitor C2;

[0089] The positive output terminal of the voltage detection device is connected to the first terminal of the inductor L, the second terminal of the inductor L is connected to the source of the boost switch Q1 and the anode of the boost diode D7 respectively, the cathode of the boost diode D7 is connected to the positive electrode of the second capacitor C2, the drain of the boost switch Q1 is connected to the negative output terminal of the voltage detection device and the second terminal of the second capacitor C2 respectively, and the gate of the boost switch Q1 is connected to the control module;

[0090] The cathode of the boost diode D7 is connected to the positive electrode of the second capacitor C2 and then leads to the positive output end of the Boost circuit;

[0091] The drain of the boost switch tube Q1 is respectively connected to the negative output end of the voltage detection device and the second end of the second capacitor C2, and then the negative output end of the Boost boost circuit is led out. Then the positive output end of the Boost boost circuit is connected to the positive electrode of the energy storage battery E, and the negative output end of the Boost boost circuit is connected to the negative electrode of the energy storage battery E.

[0092] The working principle of the Boost circuit is as follows:

[0093] When the control module determines that the speed of the wind turbine generator is lower than a preset speed threshold, the gate voltage of the gate of the boost switch Q1 is controlled to be lower than the preset threshold voltage of the boost switch Q1. At this time, the boost switch Q1 is turned off. Before the boost switch Q1 is turned off, a certain amount of energy has been stored in the inductor L. Since the current cannot change suddenly, when the boost switch Q1 is turned off, the current in the inductor L will try to maintain its flow, thereby releasing its stored energy, causing the DC voltage output by the rectifier circuit to increase after passing through the inductor L, and then flow to the energy storage battery E through the boost diode D7 and the second capacitor C2;

[0094] When the control module determines that the speed of the wind turbine generator is not lower than the preset speed threshold, the gate voltage of the gate of the boost switch tube Q1 is controlled to be not lower than the preset threshold voltage of the boost switch tube Q1. At this time, the boost switch tube Q1 is turned on, and the DC voltage output by the rectifier circuit flows directly to the energy storage battery E after passing through the inductor L, the boost diode D7 and the second capacitor C2.

[0095] It should be noted that the boost diode D7 is used to prevent the current in the circuit from flowing in reverse, and the second capacitor C2 is used to smooth the voltage of the Boost circuit, reduce the ripple coefficient of the voltage in the circuit, and realize the filtering function.

[0096] For example, the working principle of the power supply device based on the wind power generator is as follows:

[0097] The A-phase AC output terminal of the wind generator motor is connected to the anode of the first rectifier diode D1 and the cathode of the fourth rectifier diode D4 respectively, and the B-phase AC output terminal of the wind generator motor is connected to the anode of the second rectifier diode D2 and the cathode of the fifth rectifier diode D5 respectively; the C-phase AC output terminal of the wind generator motor is connected to the anode of the third rectifier diode D3 and the cathode of the sixth rectifier diode D6 respectively. After the connection is completed, the wind generator motor starts to work, and the wind generator outputs current. The output current is rectified and converted into DC current through the rectifier circuit. The DC current output by the rectifier circuit is transmitted to the wind generator motor. The DC voltage output by the rectifier circuit is input to a voltage detection device. The voltage detection device is used to detect the DC voltage output by the rectifier circuit and send the detected DC voltage output by the rectifier circuit to a control module. The control module determines whether the DC voltage output by the rectifier circuit detected by the voltage detection device exceeds a preset charging voltage threshold of the energy storage battery. If the control module determines that the DC voltage output by the rectifier circuit detected by the voltage detection device exceeds the preset charging voltage threshold of the energy storage battery, the control module controls the first switch S1, the second switch S2, and the third switch S3 to close, thereby unloading the DC voltage that exceeds the preset charging voltage threshold of the energy storage battery. At the same time, the photoelectric encoder measures the speed of the wind turbine in real time and sends it to the control module. The control module determines whether the speed of the wind turbine measured by the photoelectric encoder is lower than the preset speed threshold. When the control module determines that the speed of the wind turbine is lower than the preset speed threshold, the control module controls the Boost circuit to boost the voltage input to the Boost circuit (boosted to the charging voltage range of the energy storage battery E) to ensure that the current output by the wind turbine can smoothly flow to the energy storage battery E for storage after rectification by the rectifier circuit, so as to provide working power for the load; when the control module determines that the speed of the wind turbine is not lower than the preset speed threshold (at this time, the voltage of the current output by the wind turbine meets the charging voltage range of the energy storage battery E after rectification by the rectifier circuit and can flow smoothly to the energy storage battery), the control module controls the Boost circuit not to boost the voltage input to the Boost circuit. At this time, the voltage flows through the Boost circuit and is directly output to the energy storage battery E for storage for load operation.

[0098] As an embodiment of the present invention, the control module adopts a single-chip microcomputer, and the model of the single-chip microcomputer is PIC16F886.

[0099] As an embodiment of the present invention, the rated power of the wind turbine is 100W or 200W.

[0100] It should be noted that, in actual use, those skilled in the art can select the model of the single chip microcomputer and the rated power of the wind turbine according to actual needs.

[0101] The utility model provides a Boost circuit to increase the voltage output by the wind turbine to the charging voltage level of the energy storage battery, so that even in a low wind speed environment, it can continue to provide effective charging to the energy storage battery, thereby improving the efficiency of capturing and utilizing wind energy.

[0102] This utility model incorporates a rectifier circuit and voltage detection device to ensure that the AC power output by the wind turbine at different wind speeds is efficiently converted into stable DC power and stored in the energy storage battery. Furthermore, when the voltage provided by the wind turbine exceeds the charging voltage threshold of the energy storage battery, a load shedding device is connected to regulate the voltage in the circuit, preventing damage to the energy storage battery due to excessive voltage.

[0103] Furthermore, the present invention has a reliable design principle, a simple structure, and a very broad application prospect. The above description of the disclosed embodiments enables professionals skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power supply device based on a wind power generator, the device comprising a wind power generator, characterized in that: The device also includes a rectifier circuit, a voltage detection device, an energy storage battery E and a Boost circuit; The input end of the rectifier circuit is connected to the output end of the wind turbine generator, and is used to rectify the AC power output by the wind turbine generator into DC power; The output end of the rectifier circuit is connected to the input end of the Boost circuit; The boost circuit is used to boost the DC voltage of the power supply device to increase the voltage of the DC power output by the rectifier circuit to within the charging voltage range of the energy storage battery; The positive output terminal of the Boost circuit is connected to the positive electrode of the energy storage battery E, and the negative output terminal of the Boost circuit is connected to the negative electrode of the energy storage battery E; The energy storage battery E is used to store the DC voltage of the power supply device; The positive electrode of the energy storage battery E is used to connect to the positive power input terminal of the load, and the negative electrode of the energy storage battery E is used to connect to the negative power input terminal of the load.

2. The power supply device based on the wind power generator according to claim 1, characterized in that: The rectifier circuit adopts a three-phase uncontrolled rectifier bridge; the three-phase uncontrolled rectifier bridge includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4, a fifth rectifier diode D5 and a sixth rectifier diode D6; The wind turbine generator output terminal includes an A-phase AC power output terminal, a B-phase AC power output terminal and a C-phase AC power output terminal; The A-phase AC power output terminal is connected to the anode of the first rectifier diode D1 and the cathode of the fourth rectifier diode D4 respectively; The B-phase AC power output terminal is connected to the anode of the second rectifier diode D2 and the cathode of the fifth rectifier diode D5 respectively; The C-phase AC power output terminal is connected to the anode of the third rectifier diode D3 and the cathode of the sixth rectifier diode D6 respectively; The cathode of the first rectifier diode D1, the cathode of the second rectifier diode D2 and the cathode of the third rectifier diode D3 are connected to lead out to the positive output end of the rectifier circuit; The anode of the fourth rectifier diode D4, the anode of the fifth rectifier diode D5 and the anode of the sixth rectifier diode D6 are connected to lead out to the negative output end of the rectifier circuit; The positive output terminal of the rectifier circuit and the negative output terminal of the rectifier circuit constitute the output terminal of the rectifier circuit.

3. The power supply device based on the wind power generator according to claim 2, characterized in that: The power supply device further includes a voltage detection device, a control module, a load unloading device, a first switch S1, a second switch S2 and a third switch S3; The voltage detection device is installed on the connection line between the rectifier circuit and the Boost circuit, and is used to detect the DC voltage output by the rectifier circuit; The input end of the unloading device is connected to the first end of the first switch S1, the first end of the second switch S2 and the first end of the third switch S3 respectively; The second end of the first switch S1 is connected to the A-phase AC power output end; The second end of the second switch S2 is connected to the B-phase AC power output end; A second end of the third switch S3 is connected to the C-phase AC power output end; The voltage detection device is connected to the control module; The voltage detection device is used to send the detected DC voltage to the control module; The control module is electrically connected to the first switch S1, the second switch S2 and the third switch S3 respectively; The control module is used to determine and, when it is determined that the DC voltage detected by the voltage detection device exceeds a preset charging voltage threshold of the energy storage battery E, control the first switch S1, the second switch S2, and the third switch S3 to close, so as to unload the load through the unloading device; The first switch S1 , the second switch S2 , and the third switch S3 are in an open state by default.

4. The power supply device based on the wind power generator according to claim 3, characterized in that: The power supply device further includes a photoelectric encoder, a first resistor R1 and a second resistor R2; The first end of the first resistor R1 is connected to the positive electrode of the energy storage battery E, the second end of the first resistor R1 is connected to the positive input end of the power supply of the photoelectric encoder and the first end of the second resistor R2 respectively, and the negative output end of the power supply of the photoelectric encoder and the second end of the second resistor R2 are connected to the negative electrode of the energy storage battery E respectively; The photoelectric encoder is installed on the output shaft of the wind turbine; The photoelectric encoder is electrically connected to the control module; The photoelectric encoder is used to measure the speed of the output shaft of the wind turbine and send it to the control module; The control module is electrically connected to the Boost circuit to control the Boost circuit to boost the DC voltage output by the rectifier circuit when the speed collected by the photoelectric encoder is lower than a preset speed threshold.

5. The power supply device based on the wind power generator according to claim 3, characterized in that: The Boost circuit includes a boost switch Q1, an inductor L, a boost diode D7, and a second capacitor C2; The positive output terminal of the voltage detection device is connected to the first terminal of the inductor L, the second terminal of the inductor L is connected to the source of the boost switch Q1 and the anode of the boost diode D7 respectively, the cathode of the boost diode D7 is connected to the positive electrode of the second capacitor C2, the drain of the boost switch Q1 is connected to the negative output terminal of the voltage detection device and the second terminal of the second capacitor C2 respectively, and the gate of the boost switch Q1 is connected to the control module; The cathode of the boost diode D7 is connected to the positive electrode of the second capacitor C2 and then leads to the positive output end of the Boost circuit; The drain of the boost switch tube Q1 is connected to the negative output end of the voltage detection device and the second end of the second capacitor C2 respectively, and then leads to the negative output end of the Boost circuit.

6. The power supply device based on the wind power generator according to claim 3, characterized in that: The control module adopts a single chip microcomputer, and the single chip microcomputer model is PIC16F886.

7. The power supply device based on a wind power generator according to claim 1, characterized in that: The rated power of the wind turbine is 100W or 200W.

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