Title :
Development of modulation strategies for NPC converter addressing DC link voltage balancing and CMV reduction
Author :
Boian, Daniela ; Biris, Ciprian ; Teodorescu, Remus ; Sztykiel, Michal
Author_Institution :
Dept. of Energy Technol., Aalborg Univ., Aalborg, Denmark
Abstract :
3L-NPC inverters are more popular due to their superior performance compared with two level inverters. One of the most optimal applications for multilevel inverter is the Adjustable Speed Drives (ASD). The industry reported numerous ASD failures due to high frequency PWM. Those failures consist in insulation breakdown and bearing failures. By the use of this type of converters, both Electromagnetic Interference (EMI) and harmonic distortions are improved. This paper proposes two modulation strategies for Three Level Neutral Point Clamped Converter (3L-NPC). The main focus of these modulation strategies is to reduce the Common Mode Voltage (CMV) and balance the DC Link Voltage.
Keywords :
electromagnetic interference; invertors; power convertors; variable speed drives; 3L-NPC inverters; ASD failures; CMV reduction; DC link voltage balancing; NPC converter; adjustable speed drives; bearing failures; common mode voltage; electromagnetic interference; harmonic distortions; insulation breakdown; multilevel inverter; three level neutral point clamped converter; Capacitors; Inverters; Pulse width modulation; Switches; Variable speed drives; Vectors; 3L-NPC Converter; CMV Reduction; DC Link Balancing; Modulation Strategies; Multilevel; SVM;
Conference_Titel :
Power Electronics for Distributed Generation Systems (PEDG), 2012 3rd IEEE International Symposium on
Conference_Location :
Aalborg
Print_ISBN :
978-1-4673-2021-4
Electronic_ISBN :
978-1-4673-2022-1
DOI :
10.1109/PEDG.2012.6254097
