Charging control circuit of wind driven generator

Abstract

The utility model discloses a charging control circuit of a wind driven generator. The charging control circuit comprises a charging control module, a detection module, a rectification module and a switch module. One end of the detection module is electrically connected with one phase output by the generator, and the other end is electrically connected with the charging control module; the input end of the rectifier module is electrically connected with the three-phase output of the generator, and the output end is electrically connected with the switch module; and the charging control module is also electrically connected with the switch module. The detection module is arranged to detect the rotating speed of the wind driven generator, tracking of the maximum power of the wind driven generator is achieved, when the rotating speed of the wind driven generator reaches a specified value, the charging control module is used for outputting a PWM signal to conduct on-off control on the switch module, a circuit is used for charging a battery, and the wind energy utilization efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind driven generator technical field especially relates to a wind driven generator charging control circuit. BACKGROUND

[0002] Coal, petroleum, natural gas and the like are the most widely used energy, they are all non-renewable fossil resources, and wind energy is an economic, environment-friendly and large reserves renewable resource, therefore, all countries in the world are speeding up the development and utilization of wind energy. Wind power generation is the main form of utilizing wind energy in the world at present, since wind power generation has good prospects, developing and utilizing wind energy resources have important significance for relieving energy shortage and protecting ecological environment.

[0003] At present, in the field of wind energy, the utilization rate of wind energy and the improvement of power quality are taken as the target to effectively control the electromagnetic torque of the generator, so that the generator speed follows the relative change of the wind driven generator speed, so that the maximum power point is tracked and the maximum wind energy is captured, and the efficiency of the wind turbine generator system is further improved. However, because wind energy has the characteristics of transience, therefore, the wind driven generator speed cannot always be kept above the rated wind driven generator speed, and the wind turbine will run in the mode of outputting maximum power most of the time, at this time, the target to be achieved is to capture maximum wind energy and improve the utilization rate of wind energy, therefore, it is of great significance to study the tracking of the maximum power of the generator.

[0004] At present, how to further improve the utilization efficiency of wind driven generator is still an important technical problem to be solved in the field of wind energy. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to track the power of wind driven generator to solve the technical problem of wind energy utilization efficiency existing in the prior art.

[0006] In view of the above problems, a wind driven generator charging control circuit is provided, which detects the wind driven generator speed of the wind driven generator through the detection module, realizes the tracking of the maximum power of the wind driven generator, and when the wind driven generator speed reaches the specified value, uses the charging control module to output PWM signal to switch the switch module, uses the circuit to charge the battery, and improves the utilization efficiency of wind energy.

[0007] A wind driven generator charging control circuit, comprising:

[0008] A charging control module;

[0009] A detection module;

[0010] A rectifier module;

[0011] A switch module;

[0012] One end of the detection module is electrically connected with one phase of the generator output, and the other end is electrically connected with the charging control module;

[0013] The input end of the rectifier module is electrically connected with the three-phase output of the generator, and the output end is electrically connected with the switch module;

[0014] The charging control module is also electrically connected with the switch module.

[0015] In a first possible implementation of the wind driven generator control circuit, the wind driven generator charging control circuit further comprises:

[0016] A first filter module;

[0017] The first filter module is connected between the rectifier module and the switch module.

[0018] In a second possible implementation of the wind driven generator control circuit, the wind driven generator charging control circuit further comprises:

[0019] A voltage stabilizing module;

[0020] The voltage stabilizing module is electrically connected with the switch module.

[0021] In a third possible implementation of the wind driven generator control circuit, the wind driven generator charging control circuit further comprises:

[0022] A second filter module;

[0023] The second filter module is electrically connected between the voltage stabilizing module and the output end of the circuit.

[0024] In a fourth possible implementation of the wind driven generator control circuit, the detection module comprises:

[0025] A first diode, a first resistor, a second resistor, a third resistor, a fourth resistor and a first triode;

[0026] The anode of the first diode is electrically connected with any one phase of the output of the generator;

[0027] The cathode of the first diode, the first resistor, the second resistor and the gate of the first triode are sequentially electrically connected;

[0028] The third resistor is connected between the power supply and the drain of the first triode;

[0029] The source of the first triode is grounded, and the fourth resistor is electrically connected between the drain of the first triode and the charging control module.

[0030] In combination with the first possible implementation manner of the utility model, in the fifth possible implementation manner, the first filter module comprises:

[0031] The first capacitor;

[0032] Two ends of the first capacitor are electrically connected with two ends of a rectifier bridge in the rectifier module.

[0033] In combination with the third possible implementation manner of the utility model, in the sixth possible implementation manner, the switch module comprises:

[0034] The first MOS tube;

[0035] The drain of the first MOS tube is electrically connected with one end of the rectifier module, the source is electrically connected with the voltage stabilizing module, and the gate is electrically connected with the charging control module.

[0036] In combination with the sixth possible implementation manner of the utility model, in the seventh possible implementation manner, the charging control module comprises:

[0037] IO control pin;

[0038] The charging control module is electrically connected with the gate of the first MOS tube through the IO control pin, and outputs a PWM signal of the first MOS tube.

[0039] In combination with the sixth possible implementation manner of the utility model, in the eighth possible implementation manner, the voltage stabilizing module comprises:

[0040] The second diode and the first inductor;

[0041] The second diode is electrically connected with one end of the rectifier module, one end of the first filter module and one end of the second filter module, and the cathode is electrically connected with the source of the first MOS tube and one end of the first inductor; the other end of the first inductor is electrically connected with the other end of the second filter module.

[0042] In combination with the eighth possible implementation manner of the utility model, in the ninth possible implementation manner, the second filter module comprises:

[0043] The second capacitor, the fifth resistor and the sixth resistor;

[0044] One end of the second capacitor is electrically connected with the first inductor and one end of the fifth resistor, and the other end is electrically connected with one end of the sixth resistor;

[0045] The other ends of the fifth resistor and the sixth resistor are electrically connected with the feedback pin of the charging control module.

[0046] The wind driven generator control circuit has the advantages that the detection module is arranged to detect the wind driven generator rotating speed of the wind driven generator, the maximum power of the wind driven generator is tracked, when the wind driven generator rotating speed reaches a specified value, the switch module is switched by the PWM signal output by the charging control module, the battery is charged by the circuit, and the wind energy utilization efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0048] Figure 1 A module structure diagram of the wind driven generator control circuit in the present application;

[0049] Figure 2 A circuit structure diagram of the wind driven generator control circuit in the present application;

[0050] Components and serial numbers:

[0051] 100 - rectifier module, 200 - detection module, 300 - charging control module, 400 - first filter module, 500 - switch module, 600 - voltage stabilizing module, 700 - second filter module. DETAILED DESCRIPTION

[0052] The technical solutions in the present application will be described clearly and completely in combination with the drawings in the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present application.

[0053] Unless otherwise defined, all the technical and scientific terms used in the present application have the same meanings as those commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the present application includes any and all combinations of one or more related listed items.

[0054] It is to be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element with intervening elements present.

[0055] It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, specify relative positions and orientations based on the orientations and positions shown in the drawings, and are used only for the purpose of ease of description and illustration and are not to be construed as indicating or implying that the application is limited to a particular orientation, configuration or operation of the devices or elements illustrated and described, and therefore should not be taken as limiting the application.

[0056] In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances of an element, and do not imply a relative importance of the elements, or an order of use, or an order of operation, unless specifically stated otherwise.

[0057] The purpose of the present application is to track the power of a wind turbine to solve the technical problem of wind energy utilization efficiency in the prior art.

[0058] In view of the above problems, a wind turbine charging control circuit is provided.

[0059] A wind turbine charging control circuit, comprising a charging control module 300, a detection module 200, a rectifier module 100 and a switch module 500. Figure 1 , Figure 1 A module structure diagram of a wind turbine control circuit in the utility model, including charging control module 300, detection module 200, rectifier module 100, switch module 500, one end of detection module 200 is electrically connected with one phase output of generator, the other end is electrically connected with charging control module 300, the input end of rectifier module 100 is electrically connected with three-phase output of generator, and the output end is electrically connected with switch module 500, and charging control module 300 is also electrically connected with switch module 500. The wind turbine speed of the wind turbine is detected by setting detection module 200, the tracking of the maximum power of the wind turbine is realized, when the wind turbine speed reaches the specified value, switch module 500 is switched by using the PWM signal output by charging control module 300, the battery is charged by using the circuit, and the wind energy utilization efficiency is improved.

[0060] In the embodiment, as Figure 1The charging control module 300 can be an MCU, which includes IO control pins, a feedback pin (FB) and an input pin.

[0061] In the embodiment, the detection module 200 is used to detect the frequency and amplitude of the AC voltage signal, which are proportional to the rotation speed of the wind driven generator. The charging control module 300 is used to convert the detected frequency and amplitude signals to the rotation speed of the generator. When the rotation speed reaches the second level, the PWM signal is sent to the switch module 500 to control the MOS tube, and then the voltage is stabilized, filtered, reduced, constant, and constant current to charge the battery.

[0062] Further, the wind driven generator charging control circuit further comprises a first filter module 400, which is connected between the rectifier module 100 and the switch module 500. The first filter module 400 comprises a first capacitor C1, and the two ends of the first capacitor C1 are respectively connected with the two ends of the rectifier bridge (U27-U32) in the rectifier module 100. The first filter module 400 is used to filter the converted DC signal.

[0063] Further, the wind driven generator charging control circuit further comprises a voltage stabilizing module 600, which is electrically connected with the switch module 500. The voltage stabilizing module 600 comprises a second diode D2 and a first inductor L1. The second diode D2 is electrically connected with one end of the rectifier module 100, one end of the first filter module 400 and one end of the second filter module 700, and the cathode is electrically connected with the source of the first MOS tube Q2 and one end of the first inductor L1. The other end of the first inductor L1 is electrically connected with the other end of the second filter module 700.

[0064] Further, the wind driven generator charging control circuit further comprises a second filter module 700, which is electrically connected between the voltage stabilizing module 600 and the output end of the circuit. The second filter module 700 comprises a second capacitor C2, a fifth resistor R5 and a sixth resistor R6. One end of the second capacitor C2 is electrically connected with the first inductor L1 and one end of the fifth resistor R5, and the other end is electrically connected with one end of the sixth resistor R6. The other ends of the fifth resistor R5 and the sixth resistor R6 are electrically connected with the feedback pin FB of the charging control module 300.

[0065] As Figure 2 , Figure 2The utility model discloses a wind driven generator control circuit, including detection module 200, rectification module 100, switching module 500 and charging control module 300, wherein, detection module 200 includes: first diode D1, first resistance R1, second resistance R2, third resistance R3, fourth resistance R4, first triode Q1, the anode of first diode D1 is electrically connected with the output of any phase of generator, and the cathode of first diode D1, first resistance R1, second resistance R2, the grid of first triode Q1 are connected in proper order, third resistance R3 is connected between power supply and the drain of first triode Q1, and the source of first triode Q1 is grounded, and fourth resistance R4 is connected between the drain of first triode Q1 and charging control module 300.

[0066] Further, switching module 500 includes first MOS tube, the drain of first MOS tube is electrically connected with one end of rectification module 100, the source is electrically connected with voltage stabilizing module 600, and the grid is electrically connected with charging control module 300.

[0067] Charging control module 300 includes IO control pin, and charging control module 300 is electrically connected with the grid of first MOS tube Q2 through IO control pin and exports PWM signal of first MOS tube Q2.

[0068] The utility model discloses a wind driven generator control circuit, through setting detection module 200 to the wind driven generator speed of wind driven generator of wind power generation is detected, has realized the maximum power of wind driven generator's tracking, when wind driven generator speed reaches the specified value, utilizes charging control module 300 and exports PWM signal to switching module 500 and carries out switching control, utilizes the circuit and charges the battery, has improved the wind energy utilization efficiency.

[0069] The above is only the preferred embodiment of the utility model, and does not restrict the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A wind power generator charging control circuit, characterized in that comprising: a charging control module; a detection module; a rectifier module; a switch module; one end of the detection module is electrically connected with one phase of the generator output, and the other end is electrically connected with the charging control module; the input end of the rectifier module is electrically connected with the three-phase output of the generator, and the output end is electrically connected with the switch module; the charging control module is also electrically connected with the switch module; the detection module comprises: a first diode, a first resistor, a second resistor, a third resistor, a fourth resistor, and a first triode; the anode of the first diode is electrically connected with any phase of the generator output; the cathode of the first diode, the first resistor, the second resistor, and the gate of the first triode are electrically connected in sequence; the third resistor is connected between the power supply and the drain of the first triode; the source of the first triode is grounded, and the fourth resistor is electrically connected between the drain of the first triode and the charging control module.

2. The wind generator charging control circuit of claim 1, wherein, The wind power generator charging control circuit further comprises: a first filter module; the first filter module is connected between the rectifier module and the switch module.

3. The wind generator charging control circuit of claim 2, wherein, The wind power generator charging control circuit further comprises: a voltage stabilizing module; the voltage stabilizing module is electrically connected with the switch module.

4. The wind generator charging control circuit of claim 3, wherein, The wind power generator charging control circuit further comprises: a second filter module; the second filter module is electrically connected between the voltage stabilizing module and the output end of the circuit.

5. The wind generator charging control circuit of claim 4, wherein, The first filter module comprises: a first capacitor; the two ends of the first capacitor are respectively electrically connected with the two ends of the rectifier bridge in the rectifier module.

6. The wind generator charging control circuit of claim 5, wherein, The switch module comprises: a first MOS tube; the drain of the first MOS tube is electrically connected with one end of the rectifier module, the source is electrically connected with the voltage stabilizing module, and the gate is electrically connected with the charging control module.

7. The wind generator charging control circuit of claim 6, wherein, The charging control module comprises: an IO control pin; the charging control module is electrically connected with the gate of the first MOS tube through the IO control pin, and outputs a PWM signal of the first MOS tube.

8. The wind generator charging control circuit of claim 7, wherein, The voltage stabilizing module comprises: a second diode and a first inductor; the second diode is electrically connected with one end of the rectifier module, one end of the first filter module, and one end of the second filter module, and the cathode is electrically connected with the source of the first MOS tube and one end of the first inductor; the other end of the first inductor is electrically connected with the other end of the second filter module.

9. The wind generator charging control circuit of claim 8, wherein, The second filter module comprises: a second capacitor, a fifth resistor, and a sixth resistor; one end of the second capacitor is electrically connected with the first inductor and one end of the fifth resistor, and the other end is electrically connected with one end of the sixth resistor; the other ends of the fifth resistor and the sixth resistor are electrically connected with the feedback pin of the charging control module.

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