论文标题
具有电容器电压自动平衡能力的多相电机的广义开关电容器模块化多层逆变器拓扑
A Generalized Switched-Capacitor Modular Multilevel Inverter Topology for Multiphase Electrical Machines with Capacitor-Voltage Self-Balancing Capability
论文作者
论文摘要
关于多级逆变器的最新研究显示了令人兴奋的特性，包括产生多个输出电压和集成电压增强的潜力。但是，大多数呈现的逆变器拓扑具有限制的输出电压水平和有限的输出电压增强比。此外，平衡多级转换器中电容器的电压非常重要，应在拓扑或控制方法中考虑。本文介绍了用于多级直流逆变器的广义开关电容器电路拓扑，可以为所需的输出电压级别开发。同样，根据设计需求，最大交流输出电压可能从远低于直流输入电压到几次的值不等。高压直流输入和交流输出可以使用低压电容器来处理，从而大大降低了总成本和体积。所提出的拓扑进一步可以通过可堆叠的电路进行多个负载阶段的易于扩展。它具有平衡电容器电压的固有能力。为了验证此概念的可行性和实用性，我们为建议的逆变器拓扑结构提供电路描述，控制策略，设计建议以及相关的模拟发现。
Recent research on multilevel inverters shows exciting properties, including the potential to generate multiple output voltages and integrated voltage boosting. However, most presented inverter topologies have a restricted number of output voltage levels and limited output voltage boosting ratio. In addition, balancing the voltage of capacitors in multilevel converters is very important and should be considered in the topology or control method. This paper describes a generalized switched-capacitor circuit topology for multilevel dc-to-ac inverters that can be developed for the desired output voltage levels. Also, the maximum ac output voltage can vary from values much lower than the dc input voltage to several times of it depending on the design requirement. High-voltage dc input and ac output could be handled using low-voltage capacitors, which substantially decreases overall cost and volume. The proposed topology further allows for easy expansion through stackable circuits for multiple load phases. It has an inherent capacity for balancing the voltage of capacitors. To validate the feasibility and practicality of this concept, we provide circuit descriptions, control strategies, design recommendations, and pertinent simulation findings for the suggested inverter topology.
