Real-time implementation of low-switching frequency modulation strategies for active power filters
- Autores: Irati Ibañez Hidalgo
- Directores de la Tesis: Asier Zubizarreta Pico (dir. tes.), Salvador Ceballos Recio (dir. tes.)
- Lectura: En la Universidad del País Vasco - Euskal Herriko Unibertsitatea ( España ) en 2024
- Idioma: español
- Tribunal Calificador de la Tesis: Jon Andoni Barrena Bruña (presid.), Eva Portillo Pérez (secret.), Ricardo Aguilera Echeverria (voc.)
- Programa de doctorado: Programa de Doctorado en Ingeniería de Control, Automatización y Robótica por la Universidad del País Vasco/Euskal Herriko Unibertsitatea
- Materias:
- Enlaces
- Tesis en acceso abierto en: ADDI
- Resumen
Active power filters (APF) have been proposed as an efficient solution to improve the power quality and reduce the harmonic distortion produced by non-linear loads and power generation units connected to the grid. For high-power medium-voltage APF, low-switching frequency modulators are preferred over standard carrier based-PWM, which often requires derating of the power converter current due to the high-switching losses. This PhD Thesis presents a closed-loop controller for high-power medium-voltage APFs, based on selective harmonic control - PWM (SHC-PWM), featuring a good trade-off between dynamic response, steady state performance and low-switching frequency. However, the SHC-PWM presents some challenges like the efficient calculation of the switching angles, the exponential increase of the size of the solution space when the number of low-order harmonics to control increases and the implementation of the closed-loop control system assuring a good balance between dynamic and stationary response. This PhD Thesis attempts to respond to these challenges and enables the development of active filtering applications that, due to the use of low-switching frequency modulation techniques, are competitive in terms of power density and cost.
