Artículo
Integral Sliding-Mode Control-Based Direct Power Control for Three-Level NPC Converters
Autor/es | Lin, Hao
León Galván, José Ignacio Luo, Wensheng Márquez Alcaide, Abraham Liu, Jianxing Vázquez Pérez, Sergio García Franquelo, Leopoldo |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Electrónica |
Fecha de publicación | 2020-01 |
Fecha de depósito | 2020-07-09 |
Publicado en |
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Resumen | Three-level neutral-point-clamped (NPC) converter is widely used in energy conversion
systems due to its good properties for high-power systems presenting output waveforms with
reduced harmonic distortion. To obtain ... Three-level neutral-point-clamped (NPC) converter is widely used in energy conversion systems due to its good properties for high-power systems presenting output waveforms with reduced harmonic distortion. To obtain better system performance, an integral sliding-mode control (ISMC)-based direct power control (DPC) strategy is proposed for NPC converters. The controller achieves three objectives. First, an extended state observer (ESO)-based ISMC strategy, to enforce the active and reactive power to their reference values, is applied in the power tracking loop. ESO is used to reduce the influence of parameter uncertainties. Next, in the voltage regulation loop, a radial basis function neural network (RBFNN)-based adaptive ISMC strategy is applied to regulate the DC-link voltage. RBFNN is used to estimate the load variation, which is considered as a disturbance, to improve the system disturbance rejection ability. An adaptive law is used in the controller to reduce the chattering of reference active power which can reduce the current harmonic distortion. Finally, a proportional-integral (PI) control strategy is applied in the voltage balancing loop to achieve voltage balance between two DC-link capacitors. Experimental results show the effectiveness and superiority of the proposed control strategy for the NPC power converter compared with PI-based DPC strategy. |
Agencias financiadoras | National Natural Science Foundation of China Laboratorio Estatal Clave de Robótica y Sistema (HIT) |
Identificador del proyecto | 61525303
41772377 61673130 SKLRS201806B |
Cita | Lin, H., León Galván, J.I., Luo, W., Márquez Alcaide, A., Liu, J., Vázquez Pérez, S. y García Franquelo, L. (2020). Integral Sliding-Mode Control-Based Direct Power Control for Three-Level NPC Converters. Energies, 13 (1), Article number 227. |
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