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In this paper, a novel common-mode voltage (CMV) elimination scheme is proposed for five-level active neutral-point clamped (5L-ANPC) inverters, which is based on the space vector PWM (SVPWM). The proposed SVPWM scheme utilizes only 19 voltage vectors producing a zero value of CMV among the whole 125 voltage vectors of the 5L-ANPC inverter. This scheme is also able to control all capacitor voltages...
In this paper, a comparison of power losses in the conventional single-phase-to-three-phase and singlephase half-bridge plus two-leg three-phase AC/DC/AC PWM converters for low power applications is presented, in which the conduction and switching losses of each semiconductor device are taken into account. Power losses of the two converters employing devices of three different manufacturers are evaluated...
In this paper, a power loss evaluation algorithm for M-level neutral-point clamped (NPC) PWM inverters is presented. In a three-level inverter, the conduction loss depends on the MI (modulation index) and the PF (power factor), and the switching loss depends on a switching frequency, turn-on and turn-off energy. However, in the higher level of inverters than the three-level, the modulation depth should...
This paper presents a fair comparison of power losses in two-level and NPC three-level PWM converters using different switching devices. Conduction losses for IGBT and diode are calculated as a function of modulation index and power factor. Switching losses are calculated as a function of the switching frequency. Three-level converters give a lower total power loss compared with two-level converters...
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