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Power Electronic Interface with Maximum Power Point Tracking Using Line-commutated Inverter for Grid-connected Permanent Magnet Synchronous Generator

机译：用于电网并网永磁同步发电机的使用换向逆变器的最大功率点跟踪的功率电子接口

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摘要

This article presents a simple grid interactive system that extracts maximum power from a wind-driven permanent magnet synchronous generator using an integrated cascade boost converter and a three-phase line-commutated inverter. The firing angle of the line-commutated inverter is held constant at an appropriate value that provides a constant DC-link voltage, and only DC-link current is sensed for maximum power point tracking. For wide wind variation, maximum power from the permanent magnet synchronous generator is achieved using a simple load current (DC-link current) perturb and observe maximum power point tracking technique. This is obtained by varying the duty ratio of the integrated cascade boost converter with an adaptive incremental step that varies the load on the permanent magnet synchronous generator in accordance with changing wind. Experiments have been conducted on a 3-phase, 750-W, 500-rpm laboratory size permanent magnet synchronous generator. The operation and analysis of the proposed topology with a fixed firing angle for a line-commutated inverter is presented. The results obtained from MATLAB (The MathWorks, Natick, Massachusetts, USA) simulation are verified with experimental results, and a close correlation has been found, proving the efficacy of the system.
机译：本文介绍了一个简单的电网交互式系统，该系统使用集成的级联升压转换器和三相线换向逆变器从风力驱动的永磁同步发电机中获取最大功率。线路换向逆变器的触发角在提供恒定直流母线电压的适当值处保持恒定，并且仅感测直流母线电流以实现最大功率点跟踪。对于宽广的风向变化，使用简单的负载电流（直流母线电流）扰动即可获得永磁同步发电机的最大功率，并遵守最大功率点跟踪技术。这是通过以自适应增量步长更改集成级联升压转换器的占空比来实现的，该步长根据风的变化而改变永磁同步发电机上的负载。实验是在实验室规模的三相750 W，500 rpm永磁同步发电机上进行的。提出了一种用于换相逆变器的固定点火角拓扑的操作和分析。从MATLAB（美国马萨诸塞州内蒂克市的MathWorks公司，MathWorks公司）仿真获得的结果已通过实验结果进行了验证，并且发现了密切相关性，从而证明了该系统的有效性。

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