Page 398 - Renewable Energy Devices and System with Simulations in MATLAB and ANSYS

Microgrid for High-Surety Power: Architectures, Controls, Protection, and Demonstration 385

Upper computer

Bi-DC/AC module Router

Wireless router
Grid Load

Fuel cell room
Wireless receiver
Li-ion
H
2
O 2
FC H 2
Ethernet interface Natural gas room
Pipeline

Bi-DC/DC module Gas engine

FIGURE 14.31 Control architecture of Super UPS.

Control Modules I/O interface

FIGURE 14.32 The power conversion system of Super UPS.

AC converter modules are used for AC sources and the AC load. The modular converter can be easily
replaced and maintained to achieve high reliability. The prototype of the power conversion system
is shown in Figure 14.32. The specifications of the DC and AC modules are listed in Table 14.4.

14.5.2 Experimental Results
The waveforms of the bidirectional DC/AC module are shown in Figure 14.33. The power capacity
of DC/AC module is 100 kW. The AC side voltage is three phased 380 VAC, and the DC side voltage