ABSTRACT
DC/AC inverters are used to quickly develop knowledge of the power-switching circuits applied in industrial applications in comparison with other power-switching circuits. In the twentieth century, a number of topologies of DC/AC inverters were created. In general, DC/AC inverters are mainly used in an AC motor–adjustable speed drive (ASD). Power DC/AC inverters have been widely used in other industrial applications since the late 1980s. Semiconductor manufacture development resulted in power devices such as GTO, Triac, BT, IGBT, MOSFET, and so on in higher switching frequencies (say from tens of kHz up to a few MHz). On account of devices such as thyristors (SCRs) with low switching frequency and high power rate, the abovementioned devices have low power rate and high switching frequency.
