CN202888869U - MPPT (Maximum Power Point Tracking) photovoltaic charge and discharge controller using fuzzy algorithm - Google Patents

MPPT (Maximum Power Point Tracking) photovoltaic charge and discharge controller using fuzzy algorithm Download PDF

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CN202888869U
CN202888869U CN 201220128147 CN201220128147U CN202888869U CN 202888869 U CN202888869 U CN 202888869U CN 201220128147 CN201220128147 CN 201220128147 CN 201220128147 U CN201220128147 U CN 201220128147U CN 202888869 U CN202888869 U CN 202888869U
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controller
mppt
voltage
photovoltaic
circuit
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徐进
扈罗全
朱汉敏
王益
许新丰
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Suzhou Institute of Trade and Commerce
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Abstract

本实用新型公开了一种利用模糊算法的MPPT光伏充放电控制器,包括太阳能电池阵列及蓄电池组,所述太阳能电池阵列与所述蓄电池组之间连接有控制器,所述控制器连接有负载电路,所述控制器包括MPPT控制器、DC-DC变换电路,所述MPPT控制器由所述蓄电池组供电,用于检测所述太阳能电池阵列的电压及电流,并控制所述DC-DC变换电路;所述太阳能电池阵列通过所述DC-DC变换电路变换出合适的电压供给所述蓄电池组。本实用新型利用改进的模糊控制的MPPT算法,模糊控制法于模糊控制具有更好的动态和稳态性能光伏阵列的输出功率则随着输出电压的升高有一个输出功率最大点。

Figure 201220128147

The utility model discloses an MPPT photovoltaic charging and discharging controller using a fuzzy algorithm, which comprises a solar cell array and a storage battery group. A controller is connected between the solar cell array and the storage battery group, and a load is connected to the controller. circuit, the controller includes an MPPT controller and a DC-DC conversion circuit, the MPPT controller is powered by the battery pack, and is used to detect the voltage and current of the solar cell array and control the DC-DC conversion circuit; the solar battery array converts a suitable voltage through the DC-DC conversion circuit to supply the storage battery pack. The utility model uses the improved MPPT algorithm of fuzzy control, and the fuzzy control method has better dynamic and steady-state performance than fuzzy control. The output power of the photovoltaic array has a maximum output power point with the increase of the output voltage.

Figure 201220128147

Description

一种利用模糊算法的MPPT光伏充放电控制器A MPPT Photovoltaic Charge-Discharge Controller Using Fuzzy Algorithm

技术领域 technical field

本实用新型涉及电力电子技术的一种光伏充放电控制器,具体涉及一种利用模糊算法的MPPT独立光伏充放电控制器。  The utility model relates to a photovoltaic charging and discharging controller of power electronic technology, in particular to an MPPT independent photovoltaic charging and discharging controller using a fuzzy algorithm. the

背景技术 Background technique

随着能源问题和环境问题的日益突出,作为清洁能源的太阳能越来越受到重视。近年来,太阳能光伏发电的研究和应用有了突飞猛进的增长,成为新能源的研究热点。制约太阳能光伏发电系统发展的因素主要有高昴的制造成本和较低的转换效率。  With the increasingly prominent energy issues and environmental issues, solar energy as a clean energy source has been paid more and more attention. In recent years, the research and application of solar photovoltaic power generation has grown by leaps and bounds, and has become a research hotspot in new energy sources. The main factors restricting the development of solar photovoltaic power generation systems are high manufacturing costs and low conversion efficiency. the

在光伏系统中,通常要求光伏电池的输出功率保持在最大,也就是让光伏电池工作在最大功率点,从而提高光伏电池的转换效率。MPPT就是一个不断测量和不断调整以达到最优的过程,它不需要知道光伏阵列精确的数学模型,而是在运行过程中不断改变可控参数的整定值,使得当前工作点逐渐向峰值功率点靠近,使光伏系统运作在峰值功率点附近。  In a photovoltaic system, it is usually required to keep the output power of the photovoltaic cell at the maximum, that is, to make the photovoltaic cell work at the maximum power point, so as to improve the conversion efficiency of the photovoltaic cell. MPPT is a process of continuous measurement and adjustment to achieve the optimum. It does not need to know the precise mathematical model of the photovoltaic array, but constantly changes the setting values of the controllable parameters during the operation, so that the current operating point gradually moves towards the peak power point. close to make the photovoltaic system operate near the peak power point. the

MPPT本质上是一个寻优过程。通过测量电压、电流和功率,比较它们之间的变化关系,决定当前工作点与峰值点的位置关系,然后控制电流(或电压)向当前工作点与峰值功率点移动,最后控制电流(或电压)在峰值功率点附近一定范围内来回摆动。  MPPT is essentially an optimization process. By measuring voltage, current and power, comparing the relationship between them, determining the positional relationship between the current operating point and the peak point, and then controlling the current (or voltage) to move to the current operating point and the peak power point, and finally controlling the current (or voltage) ) swing back and forth within a certain range around the peak power point. the

模糊控制算法设计的MPPT控制器能够稳定、高效地跟踪光伏阵列最大功率点;同时,在日照强度、环境温度等系统参数扰动的情况下,能快速寻找新的工作点,保持系统稳定,利用malab仿真表明相对于扰动观察法、电导增量法的控制器表现出很好的动态特性。使用MPPT控制器的太阳能发电系统会比传统的效率提高50%,但是跟据实际测试,由于周围环境影响与各种能量损失,最终的效率也可以提高 20%-30%。  The MPPT controller designed by the fuzzy control algorithm can track the maximum power point of the photovoltaic array stably and efficiently; at the same time, in the case of disturbance of system parameters such as sunlight intensity and ambient temperature, it can quickly find a new operating point and keep the system stable. The simulation shows that the controllers of the perturbation and observation method and the conductance incremental method show good dynamic characteristics. The solar power generation system using the MPPT controller will increase the efficiency by 50% compared with the traditional one, but according to the actual test, due to the influence of the surrounding environment and various energy losses, the final efficiency can also be increased by 20%-30%. the

实用新型内容 Utility model content

本实用新型的目的在于克服现有技术存在的以上问题,提供一种利用模糊算法的MPPT独立光伏充放电控制器。  The purpose of the utility model is to overcome the above problems existing in the prior art, and to provide an MPPT independent photovoltaic charging and discharging controller using a fuzzy algorithm. the

为实现上述技术目的,达到上述技术效果,本实用新型通过以下技术方案实现:  In order to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect, the utility model is realized through the following technical solutions:

一种利用模糊算法的MPPT光伏充放电控制器,包括太阳能电池阵列及蓄电池组,所述太阳能电池阵列与所述蓄电池组之间连接有控制器,所述控制器连接有负载电路,所述控制器包括MPPT控制器、DC-DC变换电路,所述MPPT控制器由所述蓄电池组供电,用于检测所述太阳能电池阵列的电压及电流,并控制所述DC-DC变换电路;所述太阳能电池阵列通过所述DC-DC变换电路变换出合适的电压供给所述蓄电池组。 A MPPT photovoltaic charging and discharging controller using fuzzy algorithm, including a solar cell array and a battery pack, a controller is connected between the solar cell array and the battery pack, the controller is connected to a load circuit, and the control The device includes an MPPT controller and a DC-DC conversion circuit, the MPPT controller is powered by the storage battery pack, and is used to detect the voltage and current of the solar cell array and control the DC-DC conversion circuit; the solar energy The battery array converts a suitable voltage through the DC-DC conversion circuit to supply the storage battery pack.

进一步的,所述MPPT控制器还连接一个显示模块。  Further, the MPPT controller is also connected with a display module. the

本实用新型的有益效果是:  The beneficial effects of the utility model are:

本实用新型利用改进的模糊控制的MPPT算法,是借助人工神经网络法,由实测数据生成模糊控制规则。相对扰动观察法、电导增量法,模糊控制法于模糊控制具有更好的动态和稳态性能光伏阵列的输出功率则随着输出电压的升高有一个输出功率最大点。 The utility model utilizes an improved MPPT algorithm of fuzzy control, and generates fuzzy control rules from measured data by means of artificial neural network method. Compared with the perturbation and observation method and the conductance increment method, the fuzzy control method has better dynamic and steady-state performance than the fuzzy control method. The output power of the photovoltaic array has a maximum output power point with the increase of the output voltage.

上述说明仅是本实用新型技术方案的概述,为了能够更清楚了解本实用新型的技术手段,并可依照说明书的内容予以实施,以下以本实用新型的较佳实施例并配合附图详细说明如后。本实用新型的具体实施方式由以下实施例及其附图详细给出。  The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with accompanying drawings. back. The specific embodiment of the utility model is given in detail by the following examples and accompanying drawings. the

附图说明 Description of drawings

此处所说明的附图用来提供对本实用新型的进一步理解,构成本申请的一部分,本实用新型的示意性实施例及其说明用于解释本实用新型,并不构成对本实用新型的不当限定。在附图中:  The drawings described here are used to provide a further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations to the utility model. In the attached picture:

图1 光伏发电系统的组成; Figure 1 Composition of photovoltaic power generation system;

图2 MPPT控制系统框图; Figure 2 MPPT control system block diagram;

图3 单片机系统图; Figure 3 SCM system diagram;

图4 LCD1602显示接口电路; Figure 4 LCD1602 display interface circuit;

图5 电压检测电路; Figure 5 voltage detection circuit;

图6 电流检测电路; Figure 6 Current detection circuit;

图7 AD电路; Figure 7 AD circuit;

图8 Boost变换电路; Figure 8 Boost conversion circuit;

图9 系统软件总体设计框图; Figure 9 The overall design block diagram of the system software;

图10 模糊控制器流程图。 Figure 10 Flowchart of the fuzzy controller.

图中标号说明:1、太阳能电池阵列,2、控制器,201、MPPT控制器,202、DC-DC变换电路,203、显示模块,3、蓄电池组,4、负载电路。  Explanation of symbols in the figure: 1. solar cell array, 2. controller, 201. MPPT controller, 202. DC-DC conversion circuit, 203. display module, 3. battery pack, 4. load circuit. the

具体实施方式 Detailed ways

下面将参考附图并结合实施例,来详细说明本实用新型。  The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. the

参照图1所示,一种利用模湖算法的MPPT光伏充放电控制器,包括太阳能电池阵列1及蓄电池组3,所述太阳能电池阵列1与所述蓄电池组3之间连接有控制器2,所述控制器2连接有负载电路4,所述控制器2包括MPPT控制器201、DC-DC变换电路202,所述MPPT控制器201由所述蓄电池组3供电,用于检测所述太阳能电池阵列1的电压及电流,并控制所述DC-DC变换电路202;所述太阳能电池阵列1通过所述DC-DC变换电路202变换出合适的电压供给所述蓄电池组3。  Referring to Fig. 1, a MPPT photovoltaic charging and discharging controller using a model lake algorithm includes a solar cell array 1 and a storage battery pack 3, a controller 2 is connected between the solar cell array 1 and the storage battery pack 3, The controller 2 is connected with a load circuit 4, and the controller 2 includes an MPPT controller 201 and a DC-DC conversion circuit 202, and the MPPT controller 201 is powered by the storage battery pack 3 for detecting the solar cell The voltage and current of the array 1 are controlled, and the DC-DC conversion circuit 202 is controlled; the solar battery array 1 converts a suitable voltage through the DC-DC conversion circuit 202 to supply the battery pack 3 . the

进一步的,所述MPPT控制器201还连接一个显示模块203。  Further, the MPPT controller 201 is also connected with a display module 203 . the

1.光伏系统简介  1. Introduction to Photovoltaic System

光伏发电系统组成与负载有关,直流负载和交流负载都包含光伏阵列、蓄电池组、控制电路,其系统结构如图1所示。光伏系统的负载如果是直流负载不含逆变回路,可直接与蓄电池相连,对蓄电池的输出电压进行升(降)压后提供给负载。这类系统结构简单,成本低廉。由于负载直流电压的不同,很难实现系统的标准化和兼容性,特别是生活用电,负载主要为交流,而且直流系统也很难实现并网运行。因此,交流光伏逆变电源正在逐渐取代直流光伏电源。交流光伏逆变电源系统与直流光伏电源系统的主要差别是在负载和蓄电池之间加入了逆变器,逆变器承担了将直流电压转化为交流电压的功能。 The composition of the photovoltaic power generation system is related to the load. Both the DC load and the AC load include photovoltaic arrays, battery packs, and control circuits. The system structure is shown in Figure 1. If the load of the photovoltaic system is a DC load without an inverter circuit, it can be directly connected to the battery, and the output voltage of the battery is boosted (down) and then supplied to the load. This type of system is simple in structure and low in cost. Due to the different DC voltages of the loads, it is difficult to achieve standardization and compatibility of the system, especially for domestic electricity, where the load is mainly AC, and it is also difficult for the DC system to realize grid-connected operation. Therefore, AC photovoltaic inverter power supply is gradually replacing DC photovoltaic power supply. The main difference between the AC photovoltaic inverter power supply system and the DC photovoltaic power supply system is that an inverter is added between the load and the battery, and the inverter undertakes the function of converting DC voltage into AC voltage.

2.控制系统框图  2. Control system block diagram

光伏发电系统正是这样一个强非线性系统,光伏电池也难以应用精确的数学模型描述出来,因此尝试采用模糊控制的方法来进行太阳电池的最大功率点跟踪。独立光伏系统主要利用太阳能光伏阵列,将太阳能转换为电能,以DC-DC变换电路,变换出合适的电压供给直流负载使用。由于太阳能电池的输出有不稳压性,为获得连续的电能,有时还要加入蓄电池模块,以使电压电流平稳。为保证整个光伏系统输出处于最大功率点,提高太阳能电池的利用率,设计基于模湖算法的MPPT控制器以使系统始终处于最大功率点。MPPT控制系统框图如图2所示。 Photovoltaic power generation system is such a strongly nonlinear system, and it is difficult to describe photovoltaic cells with precise mathematical models. Therefore, fuzzy control methods are tried to track the maximum power point of solar cells. The independent photovoltaic system mainly uses solar photovoltaic arrays to convert solar energy into electrical energy, and uses DC-DC conversion circuits to convert appropriate voltages for DC loads. Since the output of the solar cell is unstable, in order to obtain continuous electric energy, sometimes a battery module is added to stabilize the voltage and current. In order to ensure that the output of the entire photovoltaic system is at the maximum power point and improve the utilization rate of solar cells, an MPPT controller based on the model lake algorithm is designed so that the system is always at the maximum power point. The block diagram of the MPPT control system is shown in Figure 2.

3.单片机最小系统设计。  3. SCM minimum system design. the

本系统设计选择STC90C54AD系列单片机,该单片机是宏晶科技推出的新一代超/高速/低功耗的单片机,指令代码完全兼容传统8051单片机,12时钟/机器周期和6时钟/机器周期可任意选择,内部集成MAX810专用复位电路,时钟频率在12MHz以下时,复位脚可直接接地。系统电源采用3端集成稳压器7805,外接滤波电容提供。上电复位电路电解电容为22μF,电阻选用10k,同时在电解电容两端并接一个按钮。外部晶振选择12MHz,两端并联两个30pF的微调电容。EA引脚接高电压,以选择内部程序存储器。单片机最小系统电路如图3所示。  This system design selects STC90C54AD series single-chip microcomputer, which is a new generation of super/high-speed/low-power single-chip microcomputer launched by Hongjing Technology. The instruction code is fully compatible with the traditional 8051 single-chip microcomputer. 12 clocks/machine cycle and 6 clocks/machine cycle can be selected arbitrarily , Internally integrated MAX810 dedicated reset circuit, when the clock frequency is below 12MHz, the reset pin can be directly grounded. The system power supply is provided by a 3-terminal integrated voltage regulator 7805 and an external filter capacitor. The electrolytic capacitor of the power-on reset circuit is 22μF, the resistor is 10k, and a button is connected to both ends of the electrolytic capacitor. Choose 12MHz for the external crystal oscillator, and connect two 30pF trimming capacitors in parallel at both ends. Connect the EA pin to a high voltage to select the internal program memory. The minimum system circuit of the one-chip computer is shown in Fig. 3 . the

4.LCD显示电路设计  4. LCD display circuit design

本系统需要显示的信息主要有实时电压值、电流值、功率值、占空比等。 The information that this system needs to display mainly includes real-time voltage value, current value, power value, duty cycle and so on.

单片机常用的输出主要有LED发光二极管、数码管、LCD液晶显示等。LCD显示具有显示质量高,数字接口,控制方便,体积小、重量轻,功耗低等优点,使其在嵌入式系统中获得广泛的应用。本系统采用LCD显示输出,显示芯片选择为LCD1602。  The commonly used outputs of single-chip microcomputers mainly include LED light-emitting diodes, digital tubes, and LCD liquid crystal displays. LCD display has the advantages of high display quality, digital interface, convenient control, small size, light weight, and low power consumption, making it widely used in embedded systems. This system adopts LCD display output, and the display chip is LCD1602. the

LCD1602是一个数字接口的显示器,使用时只要设置命令字,使其处于相应的工作方式,再将要显示的字符的ASCII码送给芯片即可。所以在电路设计中选P0口作为并行数据线,因为P0口内部没有上拉电路,所以需外接上接电阻使其能够输出高电压。控制引脚使用P2口的三个端口:P2.7接LCD的RST脚、P2.6接LCD的R/W脚、P2.5接LCD的E脚,具体电路如图4所示。  LCD1602 is a display with a digital interface. When using it, you only need to set the command word to make it in the corresponding working mode, and then send the ASCII code of the character to be displayed to the chip. Therefore, the P0 port is selected as the parallel data line in the circuit design, because there is no pull-up circuit inside the P0 port, so it needs to connect an external resistor to enable it to output high voltage. The control pins use three ports of the P2 port: P2.7 is connected to the RST pin of the LCD, P2.6 is connected to the R/W pin of the LCD, and P2.5 is connected to the E pin of the LCD. The specific circuit is shown in Figure 4. the

5.电流、电压检测电路设计  5. Current and voltage detection circuit design

系统运行时需要实时检测太阳能光伏阵列的电压值和电流值,以进行相应控制。虽然电压和电流都是电量,但是单片机系统仍然不能直接处理。因此首先要将电流信号转换为电压信号,其次再将电压信号变换到单片机系统AD转换芯片能够接受的范围,一般为0~5V。电压测量电路采用电阻和运放组成,通过调节电阻R使得其处于相应测量范围,电压检测电路如图5所示。 When the system is running, it is necessary to detect the voltage and current values of the solar photovoltaic array in real time for corresponding control. Although both voltage and current are electric quantities, the single-chip microcomputer system still cannot directly handle them. Therefore, it is necessary to convert the current signal into a voltage signal first, and then convert the voltage signal to the acceptable range of the single-chip system AD conversion chip, generally 0~5V. The voltage measurement circuit is composed of a resistor and an operational amplifier. By adjusting the resistor R, it is in the corresponding measurement range. The voltage detection circuit is shown in Figure 5.

电流检测是利用ACS712具有精确的低偏置线性霍尔传感器电路,且其铜制的电流路径靠近晶片的表面。通过该铜制电流路径施加的电流能够生成可被集成霍尔 IC 感应并转化为成比例电压的磁场。通过将磁性信号靠近霍尔传感器,实现器件精确度优化。 精确的成比例电压由稳定斩波型低偏置 BiCMOS 霍尔 IC 提供,该 IC 出厂时已进行精确度编程。当通过用作电流感测通路的主要铜制电流路径(从引脚 1 和 2,到 3 和 4)的电流不断上升时,器件的输出具有正斜率 (>VIOUT(Q))。 该传导通路的内电阻通常是 1.2 mΩ,具有较低的功耗。铜线的粗细允许器件在可达 5× 的过电流条件下运行。传导通路的接线端与传感器引脚(引脚 5 到 8)是电气绝缘的,电流检测电路如图6所示。 电压、电流检测输出信号分别送AD转换芯片的0通道和1通道进行AD转换输入到单片机进行控制。  Current sensing is achieved using the ACS712 with a precision low bias linear Hall sensor circuit with a copper current path close to the surface of the die. Current applied through this copper current path generates a magnetic field that is sensed by the integrated Hall IC and converted into a proportional voltage. Device accuracy optimization is achieved by placing the magnetic signal close to the Hall sensor. The precise, proportional voltage is provided by a chopper-stabilized, low-bias BiCMOS Hall IC that is factory programmed for precision. The output of the device has a positive slope (>VIOUT(Q)) when current is rising through the primary copper current path (from pins 1 and 2, to pins 3 and 4) used as the current sensing path. The internal resistance of this conduction path is typically 1.2 mΩ, resulting in low power dissipation. The thickness of the copper wire allows the device to operate under overcurrent conditions of up to 5×. The terminals of the conductive path are electrically isolated from the sensor pins (pins 5 to 8), and the current sensing circuit is shown in Figure 6. The voltage and current detection output signals are respectively sent to the 0 channel and 1 channel of the AD conversion chip for AD conversion and input to the single chip microcomputer for control. the

6 .AD转换电路  6. AD conversion circuit

单片机只能处理数字信号,而实际系统的电压信号量是模拟量,因些必须进行AD转换。选用TI公司的TLC2543来实现AD转换,这是一款12位串行,11通道,高速AD转换芯片。在具体电路连接时,选择通道0作为电压信号的输入,通道1作为电流信号输入。TLC2543芯片的串行接口线主要有四条,具体接法是时钟信号CLOCK接单片机P10,串行数据输入端DIN接单片机P11,串行数据输出端DOUT接单片机P12,片选信号CS2543接单片机P13。TLC2543与单片机之间只用4根线连接,基准电压选择的是单片机系统电源+5V。具体电路如图7所示。 The single-chip microcomputer can only process digital signals, but the voltage signal quantity of the actual system is an analog quantity, so AD conversion must be carried out. TI's TLC2543 is selected to realize AD conversion, which is a 12-bit serial, 11-channel, high-speed AD conversion chip. When connecting specific circuits, select channel 0 as the input of the voltage signal, and channel 1 as the input of the current signal. There are four main serial interface lines of the TLC2543 chip. The specific connection method is that the clock signal CLOCK is connected to the microcontroller P10, the serial data input terminal DIN is connected to the microcontroller P11, the serial data output terminal DOUT is connected to the microcontroller P12, and the chip selection signal CS2543 is connected to the microcontroller P13. Only 4 wires are used to connect the TLC2543 and the MCU, and the reference voltage is the MCU system power supply +5V. The specific circuit is shown in Figure 7.

7.Boost变换电路  7. Boost conversion circuit

系统DC-DC电路采用的是Boost电路,为实现系统的最大功率跟踪控制,需要调节系统开关管的导通和截止时间即改变占空比D的大小。单片机系统根据现场实时数据通过内部控制算法计算得到D的大小,通过脉宽调制PWM的方法实现对系统的控制。脉冲输出采用P22输出,为了减少变换电路对单片机系统的干扰,在脉冲输出进行光电隔离。具体电路如图8所示。 The DC-DC circuit of the system uses a Boost circuit. In order to realize the maximum power tracking control of the system, it is necessary to adjust the turn-on and cut-off time of the system switch tube, that is, to change the size of the duty cycle D. The single-chip microcomputer system calculates the size of D through the internal control algorithm according to the real-time data on site, and realizes the control of the system through the method of pulse width modulation PWM. The pulse output adopts P22 output. In order to reduce the interference of the conversion circuit to the single-chip microcomputer system, photoelectric isolation is carried out at the pulse output. The specific circuit is shown in Figure 8.

8.系统软件说明  8. System software description

单片机系统程序主要分为两部分,即主程序和中断服务程序,合理地划分这两部分程序,对于整个系统来说十分重要。本系统软件主要包含系统初始化、AD采样、模糊控制、脉宽调制输出、显示输出。系统软件总体设计如图9所示。 The single-chip system program is mainly divided into two parts, namely the main program and the interrupt service program. It is very important for the whole system to divide the two parts of the program reasonably. The system software mainly includes system initialization, AD sampling, fuzzy control, pulse width modulation output, and display output. The overall design of the system software is shown in Figure 9.

在本系统的构思当中,主程序主要完成系统初始化程序,实时数据采样、模糊控制器设计、显示程序设计。通过模糊控制计算得系统占空比输出,应用定时中断定时器T0,完成PWM信号转换,并将其中断优先级设为高。MPPT控制核心是模糊控制器的设计,模糊控功能图如图10所示。  In the conception of this system, the main program mainly completes the system initialization program, real-time data sampling, fuzzy controller design, and display program design. Calculate the system duty ratio output through fuzzy control, apply the regular interrupt timer T0, complete the PWM signal conversion, and set its interrupt priority as high. The core of MPPT control is the design of fuzzy controller, and the fuzzy control function diagram is shown in Figure 10. the

以上所述仅为本实用新型的优选实施例而已,并不用于限制本实用新型,对于本领域的技术人员来说,本实用新型可以有各种更改和变化。凡在本实用新型的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本实用新型的保护范围之内。  The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model. the

Claims (2)

1. MPPT photovoltaic charge/discharge controller that utilizes fuzzy algorithmic approach, comprise solar battery array (1) and batteries (3), be connected with controller (2) between described solar battery array (1) and the described batteries (3), described controller (2) is connected with load circuit (4), it is characterized in that: described controller (2) comprises MPPT controller (201), DC-DC translation circuit (202), described MPPT controller (201) is powered by described batteries (3), for detection of voltage and the electric current of described solar battery array (1), and control described DC-DC translation circuit (202); Described solar battery array (1) goes out suitable voltage by described DC-DC translation circuit (202) conversion and supplies with described batteries (3).
2. the MPPT photovoltaic charge/discharge controller that utilizes fuzzy algorithmic approach according to claim 1, it is characterized in that: described MPPT controller (201) also connects a display module (203).
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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN102611164A (en) * 2012-03-30 2012-07-25 苏州经贸职业技术学院 MPPT (maximum power point tracking) photovoltaic charging-discharging controller by using fuzzy algorithm and control method thereof
TWI493317B (en) * 2014-03-20 2015-07-21 Univ Kun Shan Solar power generation devices, solar power generation methods, maximum power tracking module and maximum power tracking control method
CN105226737A (en) * 2014-06-13 2016-01-06 浙江师范大学 A kind of photovoltaic charged method of high recovery rate and device
CN105375518A (en) * 2015-11-17 2016-03-02 中国科学院广州能源研究所 Fuzzy control method and system for photovoltaic maximum power point tracking (MPPT)
US9436201B1 (en) 2015-06-12 2016-09-06 KarmSolar System and method for maintaining a photovoltaic power source at a maximum power point
CN108646241A (en) * 2018-07-18 2018-10-12 河南聚合科技有限公司 A kind of removable and static cloud platform on duty of solar energy
CN110379361A (en) * 2019-07-25 2019-10-25 苏州市职业大学 The color LED dot matrix screen of photovoltaic power supply

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102611164A (en) * 2012-03-30 2012-07-25 苏州经贸职业技术学院 MPPT (maximum power point tracking) photovoltaic charging-discharging controller by using fuzzy algorithm and control method thereof
TWI493317B (en) * 2014-03-20 2015-07-21 Univ Kun Shan Solar power generation devices, solar power generation methods, maximum power tracking module and maximum power tracking control method
CN105226737A (en) * 2014-06-13 2016-01-06 浙江师范大学 A kind of photovoltaic charged method of high recovery rate and device
US9436201B1 (en) 2015-06-12 2016-09-06 KarmSolar System and method for maintaining a photovoltaic power source at a maximum power point
CN105375518A (en) * 2015-11-17 2016-03-02 中国科学院广州能源研究所 Fuzzy control method and system for photovoltaic maximum power point tracking (MPPT)
CN108646241A (en) * 2018-07-18 2018-10-12 河南聚合科技有限公司 A kind of removable and static cloud platform on duty of solar energy
CN110379361A (en) * 2019-07-25 2019-10-25 苏州市职业大学 The color LED dot matrix screen of photovoltaic power supply

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