Novel Multirate Modulator for High-Bandwidth Multicell Converters

The series and parallel multicell converters have been introduced because they provide benefits in terms of efficiency power density. However, also allow reducing the amount energy stored filters, which potentially allows for faster dynamic responses. Interleaving control patterns different cells is another distinctive feature these root potential improvement response: with one pulsewidth modulation (PWM) update at each subcycle switching period, n-cell converter may change its average output voltage over intervals, while standard can only half period. In this article, a general multirate strategy taking advantage property, avoiding an overswitching, compatible any proposed validated by simulation experimental results.