技术领域technical field
本实用新型涉及新能源在农业灌溉方面的应用，具体为基于MPPT的风光互补水泵控制器。The utility model relates to the application of new energy sources in agricultural irrigation, in particular to an MPPT-based wind-solar complementary water pump controller.
背景技术Background technique
随着传统能源不断消耗，可再生能源的使用成为当今主要趋势，风能和太阳能是比较有前景的能源。特别是农村偏远地区，电网不能普及，居民、牲畜用水，农田灌溉都是问题，把风能、太阳能发电用在农业问题上，对农村发展至关重要。目前已经有专家发明了光伏水泵系统，可以解决这些问题，但是光伏水泵系统提水效率不高，供水稳定性差，在光照充分的时候或许能够提供充分水源，而当无光照或者光照较弱的时候水泵不能提供充足水源甚至停止供水，使得其使用受到限制。为了消除这种限制，本实用型在现有光伏水泵控制系统基础上，发明设计了基于MPPT的风光互补水泵控器，此控制器使得水泵在外界环境变化时仍能以最大功率运行，保障农民用水。With the continuous consumption of traditional energy, the use of renewable energy has become the main trend today, and wind energy and solar energy are relatively promising energy sources. Especially in remote rural areas, where the power grid cannot be popularized, water for residents and livestock, and farmland irrigation are all problems. The use of wind energy and solar power generation for agricultural issues is crucial to rural development. At present, some experts have invented the photovoltaic water pump system, which can solve these problems. However, the photovoltaic water pump system has low water efficiency and poor water supply stability. It may be able to provide sufficient water when there is sufficient light, but when there is no light or light is weak. Water pumps cannot provide sufficient water or even stop water supply, so that their use is limited. In order to eliminate this limitation, on the basis of the existing photovoltaic water pump control system, this utility model invented and designed a wind-solar complementary water pump controller based on MPPT. This controller enables the water pump to still run at maximum power when the external environment changes, ensuring farmers use water.
实用新型内容Utility model content
本实用新型目的是提供基于MPPT的风光互补水泵控制器，已解决现有光伏水泵系统供水效率不高，供水稳定性差的难题。The purpose of the utility model is to provide a wind-solar complementary water pump controller based on MPPT, which has solved the problems of low water supply efficiency and poor water supply stability of the existing photovoltaic water pump system.
为了达到上述目的，本实用新型所采取的技术方案为：基于MPPT的风光互补水泵控制器，其特征主要在于包括：风机、光伏板、二极管、三极管、DC/DC升压模块、光伏电压电流值采样MPPT跟踪模块、各种电路保护信号、隔离驱动、运放，滤波电路、AT89C51控制器模块、GPRS通讯、控制电源、软件控制器、LED显示模块、流量传感器、输出电流采样电路。In order to achieve the above purpose, the technical solution adopted by the utility model is: MPPT-based wind-solar complementary water pump controller, which is mainly characterized by including: fan, photovoltaic panel, diode, triode, DC/DC boost module, photovoltaic voltage and current value Sampling MPPT tracking module, various circuit protection signals, isolation drive, operational amplifier, filter circuit, AT89C51 controller module, GPRS communication, control power supply, software controller, LED display module, flow sensor, output current sampling circuit.
DC/DC升压模块其特征在于：DC/DC升压的同时加入MPPT控制，控制器兼有相关的欠电压，过电流以及过温等保护。主电路DC/DC升压部分采用性能优良的BOOST升压结构，系统控制核心元件由单片机AT89C51实现。The DC/DC boost module is characterized in that: MPPT control is added to the DC/DC boost at the same time, and the controller also has related protections such as undervoltage, overcurrent and overtemperature. The DC/DC boosting part of the main circuit adopts the BOOST boosting structure with excellent performance, and the core component of the system control is realized by the single-chip microcomputer AT89C51.
光伏电压电流值采样MPPT跟踪模块其特征在于：通过采样光伏或风机输入的电压，电流值，计算输入功率，采用增量电导算法，实现MPPT功能。The photovoltaic voltage and current value sampling MPPT tracking module is characterized in that: the input power is calculated by sampling the voltage and current value input by the photovoltaic or fan, and the incremental conductance algorithm is used to realize the MPPT function.
LED显示模块其特征在于：实时显示和监控控制器工作状态。The LED display module is characterized in that it displays and monitors the working state of the controller in real time.
所述的软件控制器采用双闭环控制策略，外环采用电压环，稳定输出电压在参考值，内环采用电流环，在额定输出工作范围内调节电流。The software controller adopts a double closed-loop control strategy. The outer loop adopts a voltage loop to stabilize the output voltage at a reference value, and the inner loop adopts a current loop to regulate the current within the rated output working range.
AT89C51控制器采用GPRS模块与上位机进行通讯，方便用户实时了解系统工作情况以及采集数据。The AT89C51 controller uses GPRS module to communicate with the upper computer, which is convenient for users to understand the working conditions of the system and collect data in real time.
本实用新型的有益效果包括：The beneficial effects of the utility model include:
1.风光互补水泵控制器实现在无光照或者光照较弱的情况下，通过风机互补供电维持系统的正常运行。1. The wind-solar complementary water pump controller realizes the normal operation of the system through the complementary power supply of the fan in the case of no light or weak light.
2.控制器在DC/DC部分加入了最大功率点跟踪(MPPT)，采用双环控制策略实现输出电流控制，电路输出直接采用直流电机带动水泵提水，无需逆变环节。2. The controller adds maximum power point tracking (MPPT) to the DC/DC part, and adopts a double-loop control strategy to realize output current control. The circuit output directly uses a DC motor to drive the water pump to lift water without an inverter link.
3.上位机通过GPRS无线通讯模块远程实时监测水泵的运行情况。3. The upper computer remotely monitors the operation of the pump in real time through the GPRS wireless communication module.
附图说明Description of drawings
图1为本实用新型控制器整体结构图。Fig. 1 is the overall structural diagram of the controller of the present utility model.
图2为本实用新型控制器结构图Fig. 2 is the structural diagram of the utility model controller
图3为本实用新型MPPT控制算法流程图。Fig. 3 is the flowchart of the utility model MPPT control algorithm.
具体实施方式Detailed ways
为了使本实用新型实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合图1，进一步阐述本实用新型。In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the present invention will be further elaborated below in conjunction with Fig. 1 .
具体实施方式如下：The specific implementation is as follows:
如图1所示,光伏板和风机输出直流电压。在光照较强的时候由光伏板提供直流输入电压，在夜晚等无光照的情况下由风机互补供电。启动时，经过D1,D2选择高电压导通，经电路升压至24V。采样得到的B点母线电压值与给定参考电压值Vref比较调节得到电流参考值Iref。输出电流采样值Iout与Iref比较后经PI调节输出PWM2调制信号，通过控制开关管Q2，Q3通断，实现在水泵正常工作范围内调节输出电流，稳定母线电压在24V，控制结构如图2所示。由于系统中加入MPPT(算法流程图如图3)，所以在调节过程中A点电压被拉低时,光伏板或者风机能够自动实现互补供。As shown in Figure 1, photovoltaic panels and fans output DC voltage. When the sunlight is strong, the DC input voltage is provided by the photovoltaic panel, and the complementary power supply is supplied by the fan at night when there is no sunlight. When starting, select high voltage conduction through D1 and D2, and boost the voltage to 24V through the circuit. The bus voltage value at point B obtained by sampling is compared with a given reference voltage value Vref and adjusted to obtain a current reference value Iref. After the output current sampling value Iout is compared with Iref, the PWM2 modulation signal is output through PI adjustment, and the output current is adjusted within the normal working range of the water pump by controlling the switch tubes Q2 and Q3 on and off, and the bus voltage is stabilized at 24V. The control structure is shown in Figure 2. Show. Since MPPT is added to the system (the algorithm flowchart is shown in Figure 3), when the voltage at point A is pulled down during the adjustment process, the photovoltaic panels or fans can automatically realize complementary supply.
以上所述，为本实用新型的实施案例，均应涵盖在本实用新型。The above are examples of the implementation of the present utility model, and should be included in the present utility model.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554576.2UCN204835687U (en) | 2015-07-27 | 2015-07-27 | Complementary pump control ware of scene based on MPPT |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554576.2UCN204835687U (en) | 2015-07-27 | 2015-07-27 | Complementary pump control ware of scene based on MPPT |
| Publication Number | Publication Date |
|---|---|
| CN204835687Utrue CN204835687U (en) | 2015-12-02 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520554576.2UExpired - Fee RelatedCN204835687U (en) | 2015-07-27 | 2015-07-27 | Complementary pump control ware of scene based on MPPT |
| Country | Link |
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| CN (1) | CN204835687U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365973A (en)* | 2023-12-07 | 2024-01-09 | 四川省农业机械科学研究院 | Solar water lifting method and system for weak light and weak signal area |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365973A (en)* | 2023-12-07 | 2024-01-09 | 四川省农业机械科学研究院 | Solar water lifting method and system for weak light and weak signal area |
| CN117365973B (en)* | 2023-12-07 | 2024-02-09 | 四川省农业机械科学研究院 | Solar water lifting method and system for weak light and weak signal area |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20151202 Termination date:20160727 | |
| CF01 | Termination of patent right due to non-payment of annual fee |