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首页> 外文会议>2015 IEEE IAS Joint Industrial and Commercial Power Systems/ Petroleum and Chemical Industry Conference >Damped-SOGI based control algorithm for solar PV power generating system
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Damped-SOGI based control algorithm for solar PV power generating system

机译：基于阻尼SOGI的太阳能光伏发电系统控制算法

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摘要

This paper deals with two stage solar PV power generating system with improved power quality in three-phase distribution system. This system not only feeds the power to the grid but it also provides the load compensation, power factor correction and harmonics elimination. For this, a double stage system is used where first stage is a DC-DC boost converter, which performs the MPPT (Maximum Power Point Tracking). For extracting maximum power from the PV string, an incremental conductance based MPPT algorithm is used. Moreover, in second stage a voltage source converter (VSC) is utilized. For control of VSC, a damped-SOGI (Second Order Generalized Integrator) algorithm is proposed. By using damped-SOGI based control algorithm, fundamental active and reactive power components of load currents are extracted for estimating the reference grid currents. After comparing these reference grid currents with sensed grid currents, these produce the switching pulses for the grid tied VSC. A prototype of the proposed system is developed in the laboratory. Test results are shown to validate the design and control algorithm under steady state and dynamic conditions at linear and nonlinear loads.
机译：本文研究了三相配电系统中具有改进电能质量的两阶段太阳能光伏发电系统。该系统不仅向电网供电，而且还提供负载补偿，功率因数校正和谐波消除。为此，使用了双级系统，其中第一级是执行MPPT（最大功率点跟踪）的DC-DC升压转换器。为了从PV串中提取最大功率，使用了基于增量电导的MPPT算法。此外，在第二阶段中，利用电压源转换器（VSC）。为了控制VSC，提出了一种阻尼SOGI（二阶广义积分器）算法。通过使用基于阻尼SOGI的控制算法，提取负载电流的基本有功和无功功率分量，以估算参考电网电流。在将这些参考电网电流与感测到的电网电流进行比较之后，它们会为并网VSC产生开关脉冲。拟议系统的原型在实验室中开发。测试结果表明，可以在线性和非线性负载的稳态和动态条件下验证设计和控制算法。

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