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首页> 外文期刊>IEEE Transactions on Power Electronics >A Three-Phase Four-Wire Inverter Control Technique for a Single Distributed Generation Unit in Island Mode
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A Three-Phase Four-Wire Inverter Control Technique for a Single Distributed Generation Unit in Island Mode

机译：孤岛模式下单个分布式发电机的三相四线逆变器控制技术

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摘要

A control technique is developed for a three-phase four-wire split dc bus inverter of a single distributed generation unit working in island mode. The control technique combines an inner discrete-time sliding mode controlled (DSMC) current loop and an outer robust servomechanism controlled voltage loop. The control algorithms are developed under stationary $alphabeta $0 (Clarke''''s) reference frame and a modified space vector pulsewidth modulation (MSVPWM) is proposed to implement the algorithm under Clarke''''s reference frame. The proposed technique achieves voltage regulation with low steady state error and low total harmonic distortion and fast transient response under various load disturbances. Meanwhile the usage of MSVPWM in a stationary $alphabeta $0 reference frame yields better transient performance under limited dc bus voltage compared to conventional uniformly sampled sine wave modulation in $ABC$ reference frame. In this paper, besides the development and description of the algorithms, a series of discussions, analysis and studies are performed on the proposed control technique, including the $L$–$C$ filter design issue, frequency domain closed-current-loop and closed-voltage-loop responses, and time domain simulations and experiments under various load conditions. All the analysis, simulations, and experiments demonstrate the effectiveness of the proposed control solution.
机译：针对在孤岛模式下工作的单个分布式发电单元的三相四线分裂直流总线逆变器，开发了一种控制技术。该控制技术结合了内部离散时间滑模控制（DSMC）电流环路和外部鲁棒伺服机构控制的电压环路。该控制算法是在固定的$ alphabeta $ 0（Clarke）参考系下开发的，并提出了一种改进的空间矢量脉宽调制（MSVPWM）以在Clarke的参考系下实现该算法。所提出的技术实现了在各种负载干扰下具有低稳态误差和低总谐波失真以及快速瞬态响应的电压调节。同时，与$ ABC $参考帧中的常规均匀采样正弦波调制相比，在固定的$ alphabeta $ 0参考帧中使用MSVPWM可以在有限的直流总线电压下产生更好的瞬态性能。在本文中，除了算法的开发和描述外，还对所提出的控制技术进行了一系列的讨论，分析和研究，包括$ L $ – $ C $滤波器设计问题，频域闭环环路和闭环电压响应，以及在各种负载条件下的时域仿真和实验。所有的分析，仿真和实验都证明了所提出的控制解决方案的有效性。

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