Three‐Phase Seven‐Level Three‐Cell Lightweight Flying Capacitor Inverter

This chapter explores two proposed multilevel reduced modular cell converters, the lightweight flying capacitor inverter (LFCI), and the reduced flying capacitor inverter (RFCI). Both topologies are designed based on clamping a series of modular cells onto the low operational frequency cell. The chapter proposes some advanced hybrid sinusoidal pulse width modulation (SPWM) schemes, namely the phase‐shifted carrier phase‐opposition‐disposition PWM (PSC‐POD‐PWM) and the phase‐shifted carrier phase‐disposition PWM (PSC‐PD‐PWM). The chapter provides the general circuit configuration of the proposed three‐phase LFCI. Each modular cell consists a pair of semiconductor switches and a capacitor clamped in between the cells. The proposed LFCI is constructed using series‐connected modular cells that are based on the binary progression ratio. The chapter also presents the modulation technique to achieve the desired gating signals for LFCI. The harmonic analysis of PSC‐POD‐PWM is simplified using a single‐phase reference sinusoidal signal and two fundamental triangular carriers.