Exact Linearization Nonlinear Neutral-Point Voltage Control for Single-Phase Three-Level NPC Converters
Exact Linearization Nonlinear Neutral-Point Voltage Control for Single-Phase Three-Level NPC Converters
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DOI：
10.1109/tpel.2009.2015221
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发表时间：
2009-08
影响因子：
6.7
通讯作者：
S. Cóbreces;J. Bordonau;J. Salaet;E. Bueno;F. Rodríguez
中科院分区：
文献类型：
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作者：
S. Cóbreces;J. Bordonau;J. Salaet;E. Bueno;F. Rodríguez
提出了一种新的单相三电平NP钳位变流器的中点平衡控制方案。针对被控对象这一非线性时变系统，进行了控制研究。采用准精确线性化，允许应用经典控制技术。所描述的方法简单、通用，适用于降压和升压拓扑，以及线性或非线性负载下的逆变器或整流器工作模式。在模拟运行和实验运行的情况下，验证了运行的正确性。
This letter proposes a new control scheme for the neutral-point (NP) balance in single-phase three-level NP-clamped converters. The control is addressed considering the plant under study, a nonlinear time-variant system. A quasi-exact linearization is applied allowing the application of classic control techniques. The described method is simple, general, and suitable for buck and boost topologies, as well as for inverter or rectifier operating modes under either linear or nonlinear loading. Correct operation is verified under simulated and experimental operation.