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Photovoltaic Power Generation System with Improvement of Quality of Utility Interconnected Line

提高公用互联线路质量的光伏发电系统

基本信息

批准号：
15560245
负责人：
OHNISHI Tokuo
金额：
$ 2.24万
依托单位：
The University of Tokushima
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560245/
关键词：
Photvoltaic power generation Grid interconnecting inverters Improvement of power quality Multifunctional control Oscillation suppressions Electric double layer capacitors Solar cell shade compensation Power filter 系統連系二段チョッパ回路アクティブフィ

项目摘要

The conventional solar PV system inverter normally operates at unity power factor with sinusoidal current waveform and has not additional functions to improve the line voltage and current qualities. The solar PV system inverters real power output is typically less than the apparent power rating, meaning that solar PV systems can be also extends to improve the utility power line voltage and current qualities, we proposed and investigated the solar PV generation system to improve the utility power line qualities as shown next ;.1.Interconnecting current control system : The system is easily constructed by the inverter current control loop with terminal voltage control loops. Then the system can control the terminal voltage and compensate its harmonies in addition to send the solar PV generated real power to the utility line from the inverter.2.Source current control system : The system is also constructed by the source current control loop with terminal voltage control loops. The additional feed back loop operates well not only for preventing the system oscillation but also suppressing the terminal voltage distortion sending real power to the utility line.3.Partial shading compensation system : The significant power reduction caused by partial shading of solar cell panel can be avoided by using the compensation control circuit with Electric Double Layer Capacitors (EDLCs).4.Solar PV fluctuation power compensation control system : We proposed and investigated a novel cascade bidirectional chopper circuit with EDLCS for charge and discharge control circuit to compensate the power fluctuationAs short time interval quality control, it can be seen from the investigations that the feedback gain control of the terminal voltage harmonics component is very useful for the both control methods 1 and 2.Moreover, we confirmed the feasibility of the proposed charge control circuit with EDLCS useful to mitigating the PV power fluctuation.

传统的太阳能光伏系统逆变器通常工作在正弦电流波形的单位功率因数下，没有额外的功能来改善线路电压和电流质量。太阳能光伏系统逆变器的实际输出功率通常小于表观额定功率，这意味着太阳能光伏系统也可以扩展以提高公用事业电力线的电压和电流质量，本文提出并研究了太阳能光伏发电系统，以改善公用事业电力线的质量，如下所示：1.互联电流控制系统：该系统很容易由逆变器电流控制回路和终端电压控制回路构成。电源电流控制系统：该系统也是由电源电流控制回路和终端电压控制回路构成的。3.局部遮光补偿系统：采用带双电层电容(EDLC)的补偿控制电路可以避免由于太阳能电池板局部遮光引起的功率显著降低。4.太阳能光伏波动功率补偿控制系统：提出并研究了一种新型的带EDLC的级联双向斩波电路用于充放电控制电路来补偿功率波动。作为短时间间隔质量控制，研究表明，终端电压谐波分量的反馈增益控制对于控制方法1和控制方法2都是非常有用的，并且证实了所提出的采用EDLC的充电控制电路对于抑制光伏功率波动的可行性。