CN102916447A - Photovoltaic grid-connected power generation and supply device - Google Patents

Photovoltaic grid-connected power generation and supply device Download PDF

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CN102916447A
CN102916447A CN 201210460950 CN201210460950A CN102916447A CN 102916447 A CN102916447 A CN 102916447A CN 201210460950 CN201210460950 CN 201210460950 CN 201210460950 A CN201210460950 A CN 201210460950A CN 102916447 A CN102916447 A CN 102916447A
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dc
output
grid
photovoltaic
voltage
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CN 201210460950
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Chinese (zh)
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胡丽杰
高尚
王洪泉
梁彬
刘莹
毕纯辉
张玮
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哈尔滨电机厂有限责任公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion electric or electronic aspects
    • Y02E10/563Power conversion electric or electronic aspects for grid-connected applications

Abstract

The invention discloses a photovoltaic grid-connected power generation and supply device. The photovoltaic grid-connected power generation and supply device is characterized in that an Infineon XE164CM single chip microcomputer is used as a core chip which is used for controlling a PWW (Pulse-Width Modulation) duty ratio of a maximum power point tracking (MPPT) method of a DC/DC transformation unit, detecting a zero crossing point of a synchronizing signal of a grid voltage and controlling solar energy to be converted into a sine-wave current being identical with a power grid in frequency and phase position and fed into the power grid, and controlling the SPWM (Sinusoidal Pulse Width Modulation) charging of a charger. Two different control strategies are adopted for a photovoltaic grid-connected power generation function and a power supply function of the photovoltaic grid-connected power generation and supply device, and the maximum sharing effect is achieved through the structure planning of hardware of the device, which makes great sense for reducing the cost.

Description

光伏并网发电与供电装置 The photovoltaic power generation and supply device and

技术领域 FIELD

[0001 ] 本发明涉及一种光伏并网发电与供电装置。 [0001] The present invention relates to a photovoltaic power generation and power supply means.

背景技术 Background technique

[0002] 能源是人类经济及文化活动的动力来源。 [0002] source of human energy is the driving force of economic and cultural activities. 目前由于大量使用矿物能源,全世界每天产生大量的温室效应气体,已经造成极为严重的大气污染。 At present due to extensive use of fossil energy, generated worldwide every day large amounts of greenhouse gases, has caused very serious air pollution. 如果不加控制,人类生活空间的四分之一将由此受到极大威胁。 If not controlled, one-fourth the space of human lives will be at risk. 针对以上情况,开发利用可再生能源和各种绿色能源以实现可持续发展的能源结构是人类必须采取的措施。 For the above, the development of renewable energy and a variety of green energy in order to achieve sustainable development of the energy mix is ​​a measure of humanity must be taken. 从能源供应的诸多因素考虑,太阳能无疑是符合可持续发展的理想的绿色能源。 From the many factors of energy supply, solar energy is undoubtedly in line with the ideal green energy for sustainable development.

[0003] 光伏并网发电系统与光伏供电系统是光伏系统技术中的重要应用领域。 [0003] The photovoltaic power generation system and photovoltaic power system is an important application field of photovoltaic systems technology. 如果将光伏并网发电功能与光伏供电功能有效的结合在一起,可以进一步拓宽其应用场合。 If the photovoltaic power generation function effectively combined with photovoltaic power supply function, we can further expand its applications. 现有光伏并网发电系统与光伏供电系统中逆变电源拓扑结构有工频隔离型、高频隔离型、单级型、两级非隔离型拓扑结构,但都有各自的缺点。 Conventional photovoltaic power generation system and the power supply system photovoltaic inverter topology with a frequency isolation, the high-frequency isolated, single stage, two non-isolated topologies, but have their own disadvantages. 工频隔离型系统由光伏阵列、全桥电路、滤波电路及工频隔离变压器组成,其缺点在于低频率隔离变压器体积较大,质量重,致使整个系统的体积和重量均有所增大同时成本升高;高频隔离型系统由光伏阵列、含有高频隔离变压器DC/DC变换器、全桥电路及滤波电路组成,其缺点就是由于没有后级的隔离环节,所以在入网电流环节处可能含有直流分量对电网造成污染;单级型系统由光伏阵列、全桥电路及滤波电路组成,其缺点也是没有电气隔离,存在一定安全隐患;两极非隔离型系统在组成上与单极型系统相比较增加DC/DC变换单元,缺点与单级型系统相同。 Frequency isolation systems from the photovoltaic array, the full bridge circuit, a filter circuit, and frequency isolation transformer with a disadvantage that a large volume of low frequency isolation transformer, quality, volume and weight so that the overall system costs have increased while increased; high-frequency isolated by the photovoltaic array system, comprising a high frequency isolation transformer DC / DC converters, full-bridge circuit and a filter circuit, which is a disadvantage because there is no link in the subsequent stage of isolation, it may contain the current link at a network DC component pollute the grid; single stage system by the photovoltaic array, the full bridge circuit and a filter circuit, its shortcomings are not electrically isolated, there are some safety hazards; non-isolated bipolar system compared to unipolar systems compositionally increasing the DC / DC converting means, and the disadvantage of the single-stage system of the same type. 本系统的逆变电源拓扑结构由光伏阵列、含有高频隔离变压器DC/DC变换器、全桥电路、滤波电路及高频隔离变压器等组成,克服了上述各拓扑结构的缺点,具有体积小、重量轻、电气隔离,对电网污染少的特点。 Inverter power supply topology of the system by the photovoltaic array, comprising high frequency isolation transformer DC / DC converter, a full bridge circuit, a filter circuit and a high frequency isolation transformers and other components, overcome the shortcomings of the above topology, a small size, light weight, electrical isolation, and less pollution on the grid characteristics. 此外,磷酸铁锂电池在此系统中的应用使与应用传统的铅酸蓄电池的系统相比较具有体积小,充放电寿命长的优点。 Further, the lead-acid battery system and application so that the application of traditional lithium iron phosphate in this system as compared with a small volume, the advantages of long life charge and discharge.

[0004] 发明内容本发明的目的是提供一种结构简单、低成本、光伏并网发电与光伏供电功能结合在一起的装置。 [0004] The object of the present invention is to provide a simple structure, low cost photovoltaic power generation combined with the function of a photovoltaic power device. 本发明的技术方案为:一种光伏并网发电与供电装置,装置输出功率500W,由三块光伏电池板RE180S、直流升压型DC/DC变换单元、H桥逆变单元、隔离变压器单元、T型滤波单元、充电器、磷酸铁锂电池组、高频滤波器及英飞凌公司生产的16位单片机,其型号XE164CM为核心的控制单兀组成,三块光伏电池板(I)型号完全相同,每块光伏电池板的功率为180W ;三块光伏电池板(I)输出的可变直流电压信号输出给直流升压型DC/DC变换单元(2),的输入端,直流升压型DC/DC变换单元(2),将三块光伏电池板(I)串联后输出的直流电压泵升到400V左右,提供逆变后并网220V交流电压,其实现过程:控制程序中最大功率追踪控制策略(MPPT)控制XE164CM单片机的一个输出脚输出开关信号控制直流升压型DC/DC变换单元中驱动电路芯片MIC4425BM,从而控制功率场效应管MOSFET开关管IPW60R045CP的通 Aspect of the present invention is: a photovoltaic power generation and power supply means, means 500W output power, the three photovoltaic panels RE180S, DC boost type DC / DC conversion unit, H-bridge inverter unit, an isolation transformer unit, T-type filter unit, a charger, lithium iron phosphate groups, and the high-frequency filter produced by Infineon 16-bit microcontroller, the core of which model the control unit XE164CM Wu composition, three photovoltaic panels (I) completely model the same, each photovoltaic power plate is 180W; variable DC voltage signal output three photovoltaic cell panel (I) to the DC output of the step-up DC / DC converting means (2), the input of the DC boost DC / DC converting means (2), the three photovoltaic panels (I) in series after the DC voltage output of the pump rise to about 400V, the inverter provides 220V AC voltage grid, which implements the process: maximum power point tracking control program control strategy (MPPT) control an output pin of the microcontroller XE164CM switch signal is output to control the DC step-up DC / DC conversion unit drive circuit chip MIC4425BM, thereby controlling the power switch MOSFET, through IPW60R045CP ,实现直流电压的泵升;直流升压型DC/DC变换单元(2)的输出端将输出的400V直流电压信号输入给H桥逆变单元(3)输入端,H桥逆变单元(3)将直流升压型DC/DC变换单元(2)输出的400V直流电压逆变成单相并网电压交流220V,其实现过程:控制程序中正弦波脉宽调制控制策略(SPWM)控制XE164CM单片机的几个输出脚输出开关信号控制H桥逆变单元驱动芯片6ED003L06-F,进而控制绝缘栅双极型晶体管IGBT开关管Ikw30n60t的通断,实现直流电压到交流电压的逆变;H桥逆变单元(3)输出端将单相并网电压交流220V输入给T型滤波器(4)输入端,T型滤波器(4)对H桥逆变单元(3)输出的交流信号进行整形滤波;T型滤波器(4)输出端将交流电压220V输入给隔离变压器(5)输入端,隔离变压器(5)的引入使一次侧与二次侧的电气完全绝缘;隔离变压器(5)输出端将交流电压220V经隔离开关输 Achieve pumping DC voltage; 400V DC voltage signal input DC step-up DC / DC converting means (2) is output to the output terminal of the H-bridge inverter unit (3) input terminal, the H-bridge inverter unit (3 ) a DC voltage 400V DC reverse boost DC / DC converting means (2) becomes the output voltage of the AC single-phase grid 220V, its implementation: the control program sinusoidal pulse width modulation control strategy (of SPWM) control microcontroller XE164CM several control signal output pin of the output switch H-bridge inverter unit driving chip 6ED003L06-F, and thus the insulated gate bipolar transistor (IGBT) switch Ikw30n60t-off, to achieve a DC voltage to the AC voltage inverter; H-bridge inverter means (3) and the output of the single-phase 220V AC grid voltage input to the T-type filter (4) input terminal, T-type filter (4) to AC signals H-bridge inverter means (3) for shaping the output filter; (4) the output of the T-type filter to the input AC voltage 220V isolation transformer (5) input terminal, the introduction of isolation transformer (5) so that the primary side and the secondary side electrically fully insulated; (5) the output of the isolation transformer 220V AC voltage input via the disconnector 给单相电网(6) —端。 For single-phase grid (6) - side.

[0005] 本发明当有日照或电网时,隔离变压器(5)的输出端将光伏电池的能量传送给充电器(7 )的输入端或单相电网(6 ) —端将电网能量传递给充电器(7 )的输入端,充电器(7 )的输出端将光伏电池的能量或电网能量传送给磷酸铁锂电池组(8)的输入端,磷酸铁锂电池组(8)由三组完全相同型号的HKE-IFP-480-10磷酸铁锂电池组组成,能量储存在磷酸铁锂电池组(8)中;充电器(7)的充放电控制、电量检测信号是由以英飞凌单片机XE164F为核心的系统控制器(9)发出的,系统控制器(9)是此装置的核心部分。 [0005] When the present invention there is sunshine or the grid, the output of the isolation transformer (5) is the energy transferred to the charger photovoltaic cell (7) or the input of single-phase grid (6) - the end of the charging energy to the grid an input terminal (7), the charger (7) of the energy output of the photovoltaic cell or grid energy is transferred to the lithium iron phosphate group (8) input terminal, lithium iron phosphate group (8) solely by three the same model HKE-IFP-480-10 group consisting of lithium iron phosphate, lithium iron phosphate energy stored in the group (8); and charge-discharge control, charger power detection signal (7) is a microcontroller Infineon XE164F core system controller (9) emitted by the system controller (9) is the core of the device. 而当无日照及无电网且需照明时,可通过放电器将电池的能量取出,再经由H桥逆变单元(3)作电子镇流器的功能经过高频滤波器(10)去驱动气体放电灯(11)。 When sunless and lighting and need no power, battery energy can be taken out by the discharger, and then (3) as a function of the electronic ballast via a high frequency filter (10) to drive the gas through the H-bridge inverter unit the discharge lamp (11). 按这种结构规划的硬件达到最高的共用效果,结构简单,而仅需在控制程序上稍加变化即可,这对降低成本也有很大的意义。 This structure planned by the hardware to achieve the highest common effect, simple structure, but only a little change to the control program, which has great significance to reduce costs.

[0006] 本发明磷酸铁锂电池与传统的铅酸蓄电池相比,具有自身的优点。 Lithium iron phosphate [0006] Compared with the conventional lead-acid battery, has its own advantages. 能量密度是铅酸电池的4倍左右,体积小、重量轻;磷酸铁锂正极材料具有良好的电化学性能,充放电平台十分平稳,充放电过程中结构稳定,电池不燃烧、不爆炸、安全性好;外部温度55°C时电池正常工作;充放是标准放电的15倍;单体经2000次循环后容量仍大于80% ;整个生产过程清洁无毒,所有原料都无毒。 It is about four times the energy density of lead-acid batteries, small size, light weight; lithium iron phosphate cathode material having excellent electrochemical performance, charge and discharge is very stable platform, a stable configuration during charging and discharging, the battery is not combustion, explosion, safety good; external temperature 55 ° C when the battery is working properly; charging and discharging is 15 times the standard discharge; monomer capacity after 2000 cycles still greater than 80%; non-toxic cleaning the whole production process, all starting materials are nontoxic. 因而此装置具有能量密度高、体积小、重量轻、使用寿命长、安全、环保的特点。 This apparatus thus has a high energy density, small size, light weight, long life, safety, environmental protection characteristics. 本发明进一步促进了光伏并网发电功能和光伏独立供电功能相结合装置的发展,将英飞凌单片机做为控制器的核心芯片,拓宽了光伏控制器的核心芯片,并将磷酸铁锂电池组纳入装置中,提高了装置充放电的寿命、减轻了装置的重量及节约了空间。 The present invention further promote the development of photovoltaic power generation and photovoltaic function independently powered devices combining functions, Infineon chip microcontroller as the controller core, the core chip solar controller broadens, and lithium iron phosphate group into the apparatus, the apparatus to improve the life of charge and discharge, reducing the weight of the device and saving space.

附图说明 BRIEF DESCRIPTION

[0007] 图I是本发明光伏并网发电与供电装置结构示意图 [0007] FIG. I is a schematic view of the present invention, a photovoltaic power generation and supply device structure

[0008] 图2是本发明原理结构图 [0008] FIG. 2 is a schematic structural diagram of the present invention

具体实施方式 Detailed ways

[0009] 如图I所示,本发明是一种光伏并网发电与供电装置,装置输出功率500W,由三块光伏电池板RE180S、直流升压型DC/DC变换单元、H桥逆变单元、隔离变压器单元、T型滤波单元、充电器、磷酸铁锂电池组、高频滤波器及英飞凌公司生产的16位单片机,其型号XE164CM为核心的控制单兀组成,三块光伏电池板I型号完全相同,每块光伏电池板的功率为180W;三块光伏电池板I输出的可变直流电压信号输出给直流升压型DC/DC变换单元2,的输入端,直流升压型DC/DC变换单元2,将三块光伏电池板I串联后输出的直流电压泵升到400V左右,提供逆变后并网220V交流电压。 [0009], the present invention is a photovoltaic power generation and power supply means, means 500W output power, the three photovoltaic panels RE180S, DC boost type DC / DC conversion unit, H-bridge inverter unit I in FIG. isolation transformer means, T-filtering unit, a charger, lithium iron phosphate groups, and the high-frequency filter produced by Infineon 16-bit microcontroller, the core of which model the control unit XE164CM Wu composition, three photovoltaic panels model I is identical, the power of each photovoltaic panel of 180W; three output variable DC voltage signal output from the photovoltaic panel to the current I boost DC / DC converting unit 2, an input terminal, a DC step-up DC / DC converting unit 2, after three photovoltaic panel I series output DC voltage pump rise to about 400V, the inverter provides 220V AC voltage grid. 如图2所示,其实现过程:控制程序中最大功率追踪控制策略(MPPT)控制XE164CM单片机的一个输出脚输出开关信号控制直流升压型DC/DC变换单元中驱动电路芯片MIC4425BM,从而控制功率场效应管MOSFET开关管IPW60R045CP的通断,实现直流电压的泵升;直流升压型DC/DC变换单元2的输出端将输出的400V直流电压信号输入给H桥逆变单元3输入端,H桥逆变单元3将直流升压型DC/DC变换单元2输出的400V直流电压逆变成单相并网电压交流220V,其实现过程:控制程序中正弦波脉宽调制控制策略(SPWM)控制XE164CM单片机的几个输出脚输出开关信号控制H桥逆变单元驱动芯片6ED003L06-F,进而控制绝缘栅双极型晶体管IGBT开关管Ikw30n60t的通断,实现直流电压到交流电压的逆变;H桥逆变单元3输出端将单相并网电压交流220V输入给T型滤波器4输入端,T型滤波器4对H桥逆变单元3输出的交流信号进行 2, which implements the process: Maximum Power Point Tracking control program Control Strategy (MPPT) control an output pin of the microcontroller XE164CM switch signal is output to control the DC step-up DC / DC conversion unit drive circuit chip MIC4425BM, thereby controlling power pump IPW60R045CP MOSFET, on-off switch, a DC voltage to achieve rise; 400V DC voltage signal input DC boost DC / DC conversion unit outputs the output terminal 2 of the H-bridge inverter unit 3 to the input terminal, H bridge inverter unit 3 400V DC voltage output from the inverse DC boost DC / DC converting unit into a single-phase AC grid voltage 220V, its implementation: the control program sinusoidal pulse width modulation control strategy (of SPWM) control several XE164CM microcontroller output pin output switch signal H-bridge inverter unit driving chip 6ED003L06-F, and thus the insulated gate bipolar transistor (IGBT) switch Ikw30n60t-off, to achieve a DC voltage to the AC voltage inverter; H-bridge the output of the inverter unit 3 a single-phase 220V AC grid voltage input to an input terminal T-type filter 4, T type filter 4 versus H-bridge inverter unit is alternating current signal output 形滤波;T型滤波器4输出端将交流电压220V输入给隔离变压器5输入端,隔离变压器(5)的引入使一次侧与二次侧的电气完全绝缘;隔离变压器5输出端将交流电压220V经隔离开关输入给单相电网6—端。 Shaped filter; 4 filter output terminal T 220V AC input voltage to the input of the isolation transformer 5, the introduction of isolation transformer (5) so that the primary side and the secondary side electrically fully insulated; 5 Isolation transformer output terminal an AC voltage 220V input to the grid via the disconnector terminal 6- single phase.

[0010] 如图I所示,当有日照或电网时,隔离变压器5的输出端将光伏电池的能量传送给充电器7的输入端或单相电网6 —端将电网能量传递给充电器7的输入端,充电器7的输出端将光伏电池的能量或电网能量传送给磷酸铁锂电池组8的输入端,磷酸铁锂电池组8由三组完全相同型号的HKE-IFP-480-10磷酸铁锂电池组组成,能量储存在磷酸铁锂电池组8中;充电器7的充放电控制、电量检测信号是由以英飞凌单片机XE164F为核心的系统控制器9发出的,系统控制器9是此装置的核心部分,直流升压型DC/DC变换单元2的最大功率点追踪(MPPT)方法的PWM占空比的控制、电网电压同步信号过零点的检测、太阳能转换成电网同频率同相位的正弦波电流馈入电网的控制等所有控制都是由系统控制器9实现的;而当无日照及无电网且需照明时,可通过放电器将电池的能量取出,再经由H桥逆 [0010] FIG I, when there is sunshine or the grid, the output of the isolation transformer 5 photovoltaic cell energy transfer charger 7 to the input of the single-phase grid or 6 - to the end of the grid energy transfer charger 7 an input terminal, an output terminal 7 of the charger or the energy grid energy photovoltaic cell is transferred to the input terminal of lithium iron phosphate groups 8, lithium iron phosphate group 8 made up of three identical models HKE-IFP-480-10 group consisting of lithium iron phosphate, lithium iron phosphate energy stored in group 8; chargers discharge control power detection signal 7 is emitted from Infineon XE164F microcontroller core of the system controller 9, the system controller 9 is a core part of this apparatus, a DC step-up DC / DC converting unit 2 of the maximum power point tracking control of the PWM duty cycle (MPPT) method, the line voltage zero crossing detection of the synchronization signal, solar energy is converted into the same frequency grid phase sine wave current is fed to all the control power control is performed by the system controller 9; sunless and when required, and without lighting power, battery energy can be taken out by the discharger, and then via the H-bridge inverse 单元3作电子镇流器的功能经过高频滤波器10去驱动气体放电灯11。 Unit 3 functions as an electronic ballast 10 through the high-frequency filter 11 to drive a gas discharge lamp. 按这种结构规划的硬件达到最高的共用效果,结构简单,而仅需在控制程序上稍加变化即可,这对降低成本也有很大的意义。 This structure planned by the hardware to achieve the highest common effect, simple structure, but only a little change to the control program, which has great significance to reduce costs.

[0011] 光伏电池板型号:RE180S,直流升压型DC/DC变换单元的驱动电路芯片型号:MIC4425BM,功率场效应晶体管MOSFET开关管型号:IPW60R045CP,H桥逆变单元驱动芯片型号:6ED003L06-F,绝缘栅双极型晶体管IGBT开关管型号:IKW30N60T,磷酸铁锂电池组型号:HKE-IFP-480-10,系统控制器核心芯片英飞凌单片机型号:XE164CM。 [0011] Photovoltaic panel type: RE180S, DC boost type DC / DC conversion unit, the driving circuit chip Model: MIC4425BM, power field effect transistors MOSFET switch Model: IPW60R045CP, H-bridge inverter unit driving chip model: 6ED003L06-F , an insulated gate bipolar transistor (IGBT) switch model: IKW30N60T, lithium iron phosphate model group: HKE-IFP-480-10, the system controller core chip microcontroller Infineon model: XE164CM.

[0012] 本发明实现了光伏并网发电功能与光伏供电功能有效的结合,并且此种结构规划的硬件达到最高的共用效果,而仅需在控制程序上稍加变化即可,这对降低成本有很大的意义,而且可以进一步拓宽应用场合。 [0012] The present invention achieves efficient photovoltaic power generation function in conjunction with photovoltaic power supply network functions, and such a hardware structure plan highest common effect, while only little change to the control program, which is to reduce the cost a lot of sense, but also further broaden the applications.

Claims (2)

  1. 1. 一种光伏并网发电与供电装置,其特征是:装置输出功率500W,由三块光伏电池板RE180S、直流升压型DC/DC变换单元、H桥逆变单元、隔离变压器单元、T型滤波单元、充电器、磷酸铁锂电池组、高频滤波器及英飞凌公司生产的16位单片机,其型号XE164CM为核心的控制单兀组成,三块光伏电池板(I)型号完全相同,每块光伏电池板的功率为180W ;三块光伏电池板(I)输出的可变直流电压信号输出给直流升压型DC/DC变换单元(2),的输入端,直流升压型DC/DC变换单元(2 ),将三块光伏电池板(I)串联后输出的直流电压泵升到400V左右,提供逆变后并网220V交流电压,其实现过程:控制程序中最大功率追踪控制策略(MPPT)控制XE164CM单片机的一个输出脚输出开关信号控制直流升压型DC/DC变换单元中驱动电路芯片MIC4425BM,从而控制功率场效应管MOSFET开关管IPW60R045CP的通断, 1. A photovoltaic power generation and power supply means, characterized in that: 500W power output apparatus, the three photovoltaic panels RE180S, DC boost type DC / DC conversion unit, H-bridge inverter unit, an isolation transformer units, T type filter unit, a charger, lithium iron phosphate groups, and the high-frequency filter produced by Infineon 16-bit microcontroller, the core of which model the control unit XE164CM Wu composition, three photovoltaic panels (I) exact equivalent the power of each photovoltaic panel of 180W; variable DC voltage signal output three photovoltaic cell panel (I) to the DC output of the step-up DC / DC converting means (2), the input of the DC step-up DC / DC converting means (2), after three photovoltaic panels (I) in series DC voltage output from the pump rise to about 400V, the inverter provides 220V AC voltage grid, which implements the process: maximum power point tracking control program control policy (MPPT) control an output pin of the microcontroller XE164CM switch signal is output to control the DC step-up DC / DC conversion unit drive circuit chip MIC4425BM, thereby controlling the power MOSFET, IPW60R045CP switch-off, 现直流电压的泵升;直流升压型DC/DC变换单元(2)的输出端将输出的400V直流电压信号输入给H桥逆变单元(3 )输入端,H桥逆变单元(3 )将直流升压型DC/DC变换单元(2 )输出的400V直流电压逆变成单相并网电压交流220V,其实现过程:控制程序中正弦波脉宽调制控制策略(SPWM)控制XE164CM单片机的几个输出脚输出开关信号控制H桥逆变单元驱动芯片6ED003L06-F,进而控制绝缘栅双极型晶体管IGBT开关管Ikw30n60t的通断,实现直流电压到交流电压的逆变;H桥逆变单元(3)输出端将单相并网电压交流220V输入给T型滤波器(4)输入端,T型滤波器(4)对H桥逆变单元(3)输出的交流信号进行整形滤波;T型滤波器(4)输出端将交流电压220V输入给隔离变压器(5)输入端,隔离变压器(5)的引入使一次侧与二次侧的电气完全绝缘;隔离变压器(5)输出端将交流电压220V经隔离开关输入给 DC voltage pumping current; 400V DC voltage signal input DC boost DC / DC converting means (2) is output to the output terminal of the H-bridge inverter unit (3) input, H-bridge inverter means (3) the step-up DC-DC / DC converting means (2) outputs a 400V DC voltage is inverted into AC single-phase grid voltage 220V, its implementation: the control program sinusoidal pulse width modulation control strategy (of SPWM) control MCU XE164CM several output pin output switch signal H-bridge inverter unit driving chip 6ED003L06-F, and thus the insulated gate bipolar transistor (IGBT) switch Ikw30n60t-off, to achieve a DC voltage to the AC voltage inverter; H-bridge inverter unit (3) the output of the single-phase 220V AC input voltage to a grid (4) T-type filter input terminal, T type filter (4) to AC signals H-bridge inverter means (3) for shaping the output filter; T filter (4) output terminal of an AC voltage input to the input terminals 220V isolation transformer (5), the introduction of isolation transformer (5) of the primary side and the secondary side electrically completely insulated; (5) the output of the AC isolation transformer 220V input voltage to the isolated switch 单相电网(6 ) —端。 (6) single-phase grid - end.
  2. 2.根据权利要求I所述的一种光伏并网发电与供电装置,其特征是:光伏电池板型号:RE180S,直流升压型DC/DC变换单元的驱动电路芯片型号:MIC4425BM,功率场效应晶体管MOSFET开关管型号:IPW60R045CP,H桥逆变单元驱动芯片型号:6ED003L06_F,绝缘栅双极型晶体管IGBT开关管型号:IKW30N60T,磷酸铁锂电池组型号:HKE-IFP-480_10,系统控制器核心芯片英飞凌单片机型号:XE164CM。 2. A photovoltaic I according to claim grid and power supply means, characterized in that: PV panel type: RE180S, DC boost type DC / DC conversion unit, the driving circuit chip Model: MIC4425BM, power field effect MOSFET transistor switch model: IPW60R045CP, H-bridge inverter unit driving chip model: 6ED003L06_F, insulated gate bipolar transistor (IGBT) switch model: IKW30N60T, lithium iron phosphate model group: HKE-IFP-480_10, the system controller core chip Infineon SCM model: XE164CM.
CN 201210460950 2012-11-16 2012-11-16 Photovoltaic grid-connected power generation and supply device CN102916447A (en)

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