Читать книгу Soft-Switching Technology for Three-phase Power Electronics Converters - Rui Li - Страница 24

Uninterruptible power supply (UPS) is widely used in data centers and manufacturing processes to provide continuous and higher quality power. UPS is composed of the rectifier, inverter, and neutral line control half‐bridge. Totally there are seven switch legs. By installing an auxiliary resonant circuit in the DC side as shown in Figure 1.25, all switches in these seven switching legs can realize soft‐switching. Thus the power density of the UPS can be enhanced [19].

Figure 1.22 ZVS inverter for APF/STATCOM.

Figure 1.23 ZVS converter for DVR.

Figure 1.24 ZVS converter for UPQC.

Source: Based on Shi et al. [19].

Figure 1.25 UPS with the auxiliary resonance circuit for soft‐switching.