6.4. Three-Phase Voltage Source Inverter

The power circuit of the three-phase VSI is shown in Fig. 6.23(a). The power circuit of this inverter is implemented using insulated gate bipolar transistors (IGBTs); however, other semiconductor switches can be used depending on the power and switching characteristics of the inverter. Moreover, this inverter consists of three half-bridge inverters, which are connected in parallel and have the same phase output voltages with a phase difference of 120°. Therefore, for the specific inverter topology, the following equations hold:

vao(ωt)=inverteroutputphasevoltage=vbo(ωt)=vco(ωt)

image (6.27)

Figure 6.23 Three-phase ...

Get Power Electronics and Motor Drive Systems now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial