Harmonics Compensation by Using a Multi-Modular H-Bridge-Based Multilevel Converter

Energies

Alejandro Espinoza¹  Leonardo Comparatore¹  Magno Ayala¹  Julio Pacher¹  Alfredo Renault¹  Raul Gregor¹ 

[1] Laboratory of Power and Control Systems (LSPyC), Facultad de Ingeniería, Universidad Nacional de Asunción, Luque 2060, Paraguay;

关键词: harmonics compensation;    multilevel converter;    multimodular APF;   

DOI  :  10.3390/en14154698

来源: DOAJ

【 摘 要 】

This paper presents an active power filter based on a seven-level cascade H-bridge where the main contribution is a control strategy that combines model-based predictive control, the voltage vectors of the converter output levels, the phase shift PWM technique, and suboptimal DC-link voltage control. The proposed scheme greatly simplified the overall control system, making it well suited to compensate the current harmonics distortion at the grid side, generated by nonlinear loads connected to the point of common coupling. In addition, the proposed method achieved a balancing of the capacitor voltages of the seven-level cascade H-bridge converter by using the minimum DC-link voltage sensors. This feature significantly reduced the control system complexity and provided a low computational burden. Experimental results confirmed the feasibility and effectiveness of the proposed controller.

【 授权许可】

Unknown