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首页> 外文期刊>Power Electronics, IET >Fuzzy logic controller for partial shaded photovoltaic array fed modular multilevel converter
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Fuzzy logic controller for partial shaded photovoltaic array fed modular multilevel converter

机译:部分阴影光伏阵列馈电模块化多电平变换器的模糊逻辑控制器

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摘要

This study presents the control and modelling of modular multilevel converter (MMC) with grid-connected photovoltaic system. Synchronisation is an important issue in grid-connected system. Even though conventional proportional–integral (PI) controller used for synchronisation provides adequate performance, it yields poor transient response of the system because of poor tuning of controller gain values. In this study, the fuzzy tuned PI controller is designed and implemented to overcome this problem. The fuzzy logic controller refrains the controller gains based on the operating point of the system. The improved performance parameters such as faster transient response, tracking of the reference current with low overshoot and short settling time with system parameter changes under partial shading of the proposed controller are validated. The results are compared with conventional PI controlled grid-connected MMC with various PI gains. The developed controller algorithm is implemented through TMS320F28335 digital signal processor.
机译:这项研究提出了并网光伏系统的模块化多电平转换器(MMC)的控制和建模。同步是并网系统中的重要问题。即使用于同步的常规比例积分(PI)控制器提供了足够的性能,但由于控制器增益值的调整不佳,仍会产生较差的系统瞬态响应。在本研究中,设计并实现了模糊调谐PI控制器来克服此问题。模糊逻辑控制器根据系统的工作点限制控制器增益。验证了改进的性能参数,例如更快的瞬态响应,在低过冲情况下跟踪参考电流,以及在所建议控制器的部分阴影下随系统参数变化而建立时间短的稳定时间。将结果与具有各种PI增益的常规PI控制的并网MMC进行比较。开发的控制器算法通过TMS320F28335数字信号处理器实现。

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