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首页> 外文会议>2011 First Workshop on Predictive Control of Electrical Drives and Power Electronics >Grid interfacing of distributed energy sources by three-level BtB NPC converter under distorted grid voltage
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Grid interfacing of distributed energy sources by three-level BtB NPC converter under distorted grid voltage

机译：电网电压失真时三电平BtB NPC转换器与分布式能源的电网接口

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摘要

This paper presents complete control algorithm for grid-connected Pulse Width Modulated (PWM) 3-level BtB (back to back) converter intended for industrial drives and renewable energy applications. The objective of control is to limit current harmonics distortion and provide ride through capability during voltage dips. Moreover, Maximum Power Point Tracking (MPPT) and Active Power Feedforward (PF) has been implemented end tested for optimizing energy flow control. Grid Side Converter (GSC) is controlled by Voltage Oriented Control (VOC) supported by synchronization loop with positive sequence extraction, resonant current controllers for higher harmonics compensation, grid voltage feedforward loop for dips compensation and DC voltage filter. At Machine Side Converter (MSC) Direct Torque Control Space Vector Modulated (DTC-SVM) has been used. Algorithm is tested in simulations and experiment from 3kVA up to 15kVA platform using three-level BtB NPC converter with LCL filter. Both controls of GSC and MSC are interacting by Power Feedforward for energy flow optimization between grid and active load.
机译：本文提出了用于工业驱动和可再生能源应用的并网脉宽调制（PWM）3级BtB（背对背）转换器的完整控制算法。控制的目的是限制电流谐波失真，并在电压骤降期间提供穿越能力。此外，最大功率点跟踪（MPPT）和有功功率前馈（PF）已通过端部测试，以优化能量流控制。电网侧变流器（GSC）由电压定向控制（VOC）控制，该电压由具有正序提取的同步环路，用于高次谐波补偿的谐振电流控制器，用于跌落补偿的电网电压前馈环路和直流电压滤波器组成。在机器侧变流器（MSC）中，已使用直接转矩控制空间矢量调制（DTC-SVM）。使用带有LCL滤波器的三级BtB NPC转换器，在3kVA至15kVA平台的仿真和实验中对算法进行了测试。 GSC和MSC的两个控件都通过Power前馈进行交互，以优化电网和有功负载之间的能量流。

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