串级变频器控制特点

IF 2.4 Q2 MINING & MINERAL PROCESSING
A. Vorontsov, V. Glushakov, M. Pronin, Y. Sychev
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引用次数: 6

摘要

考虑了多绕组高压串级变频器和低压小功率变频器在负载各输出相串联的系统结构。低压模块包含三相二极管或有源整流器、直流电容滤波器、单相独立电压逆变器和部分模式下的模块断开装置(当部分模块断开时发生故障)。确定了串级变流器运行的可能性,给出了对部分模式单元的修正任务方程,给出了可实现负荷特性估计的修正任务表。本文给出了一种具有级联变频器的大功率装置模型的实验结果,证实了在断开部分模块时保证负载电流对称性和电路不对称性的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cascade frequency converters control features
The structures of systems with high-voltage cascade frequency converters containing multi-winding transformers and low-voltage low-power converters connected in series at each output phase of the load are considered. Low-voltage blocks contain three-phase diode or active rectifiers, DC capacitor filters, single-phase stand-alone voltage inverters and block disconnecting devices in partial modes (in case of failure when part of the blocks are disconnected). The possibilities of operation of cascade converters are determined, equations for correcting tasks to units in partial modes are given, tables of correction of tasks with estimates of achievable load characteristics are proposed. The results of experiments on the model of a powerful installation with a cascade frequency converter are presented, confirming the possibility of ensuring the symmetry of the load currents when disconnecting part of the blocks and the asymmetry of the circuit.  
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来源期刊
Journal of Mining Institute
Journal of Mining Institute MINING & MINERAL PROCESSING-
CiteScore
7.50
自引率
25.00%
发文量
62
审稿时长
8 weeks
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