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This research project has proposed a new modulation technique called “Local Carrier Pulse
Width Modulation” (LC-PWM) for MMCs with different cell voltages, taking into account the
measured cell voltages to generate switching sequences with more accurate timing. It also adapts
the modulator sampling period to improve the transitions from level to level, an important issue to
reduce noise at the internal circulating currents. As a result, the new modulation LC-PWM
technique reduces the output distortion in a wider range of voltage situations. Furthermore, it
effectively eliminates unnecessary AC components of circulating currents, resulting in lower
power losses and higher MMC efficiency.Departamento de Tecnología ElectrónicaDoctorado en Ingeniería Industria
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