Advanced Control of a Multi-Level Structure Active Power Filter
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Date
2026
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
BOUYAKOUB Ismail
Abstract
Harmonic distortion caused by nonlinear loads remains a major challenge for modern electrical
networks, as it degrades power quality, increases system losses, and accelerates the aging of grid
components. Conventional passive filters provide only partial mitigation and lack adaptability under
varying operating conditions. To overcome these limitations, active power filters have emerged as an
effective solution for harmonic suppression and reactive power compensation. This thesis focuses on
the design and control of a parallel active power filter based on a three-level Neutral Point Clamped
(NPC) inverter. The Direct Current Control (DCC) method is employed for harmonic current detection,
while an advanced Third-Order Sliding Mode Control (TOSMC) strategy is adopted to overcome the
drawbacks of conventional controllers, such as sensitivity to parameter variations, steady-state errors,
and limited dynamic performance. TOSMC offers improved stability, high tracking precision, and
reduced chattering, making it particularly well-suited for power quality applications.In addition, a
photovoltaic generator is integrated through the DC link, enabling the system not only to compensate
harmonics but also to inject renewable active power into the grid. Simulation results demonstrate
significant improvements in harmonic reduction, reactive power compensation, and overall system
stability, confirming the effectiveness of the proposed approach.
Description
THESIS
Submitted in fulfillment of the requirements for the degree of
DOCTORATE (LMD)
Field: Electrotechnics
Specialty: Electrical networks
Keywords
Power quality, Harmonic distortion, Parallel active filter