A new simple control approach of M2LC for AC railway applications
A new simple control approach of M2LC for AC railway applications
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用于交流铁路应用的 M2LC 新型简单控制方法
DOI：
10.1109/pedstc.2013.6506742
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. S. Fazel
中科院分区：
文献类型：
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作者：
Mohammad Babaey Zadeh;S. S. Fazel
15 kV、16.7Hz或25 kV、50 Hz交流电气化系统在世界范围内的铁路中普遍使用。该电压被转换为较低的电压水平，该较低的电压水平适用于采用在机车中占据大量空间的大而重的Transformer的列车的牵引变流器。为了克服这个问题，列车空间的限制，不同的拓扑结构已被建议（如M2 LC，和串联AC/DC/AC/DC转换器），这些拓扑结构在本文中进行了审查。减小这种Transformer体积和重量的一个合适的方法是在列车结构中使用模块化多电平变流器（M2 LC），其直接连接到架空网络，并且在Transformer输入的恒定电压水平下将操作频率提高到几百Hz。因此，列车上将采用体积小、重量轻的中频Transformer代替普通变压器。然而，M2 LC的控制是非常复杂的，因为它在其结构中使用大量的开关。本文提出了一种简单，简单和新的方法来控制M2 LC，将被视为适当的交流牵引应用。它将在这两种模式中提出，以产生基于一个简单的PWM方法的电压，以及与仿真结果。
The 15kV, 16.7Hz or 25kV, 50Hz AC electrification system is commonly used in railways worldwide. This voltage is transformed to a lower voltage level which is applicable for traction converters of train applying a large and heavy transformer that takes up a lot of space in locomotive. To overcome this problem as for train space limitation, different topologies have been suggested (e.g. M2LC, and series ac/dc/ac/dc converters) that these topologies are reviewed in this paper. A proper approach to decrease the volume and weight of this transformer, is using of a Modular Multi-Level Convertor (M2LC) in structure of train that is connected to overhead networks directly and increases the operation frequency to several hundred Hz in a constant voltage level in transformer input. So a compact and light medium frequency (MF) transformer will be used in train instead of ordinary transformers. However, the control of M2LC is very complex because of it uses the high number of switches in its structure. This paper presents an easy, simple and new approach to control of M2LC that will be seen proper for AC traction applications. It will be presented in both patterns to generate voltage based on a simple PWM method as well as with simulation results.