Title :
A Discontinuous Carrier-based PWM Modulation Method for the Control of the Neutral Point Voltage of Three-Phase Three-Level Diode Clamped Converters
Author :
Ojo, Olorunfemi ; Konduru, Srikanth
Author_Institution :
Dept. of Electr. & Comput. Eng., Tennessee Technol. Univ., Cookeville, TN
Abstract :
The neutral-point voltage of the three-level, three-phase converter is regulated using a hysteresis controller which selects the appropriate expression for the zero sequence voltage signal which augments the modulation signal used in the discontinuous carrier-based PWM modulation scheme for voltage control. The analytical expressions for the zero sequence voltages are generalized to three sets making its DSP implementation very easy. Simulation and experimental results verify the usefulness of the proposed neutral-point regulation technique
Keywords :
PWM power convertors; digital signal processing chips; voltage control; DSP implementation; discontinuous carrier-based PWM modulation method; hysteresis controller; neutral point voltage control; neutral-point regulation technique; three-phase three-level diode clamped converters; zero sequence voltage signal; zero sequence voltages; Capacitors; Control systems; Diodes; Phase modulation; Pulse width modulation; Pulse width modulation converters; Space vector pulse width modulation; Stress; Topology; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1581852
