Page 396 - Renewable Energy Devices and System with Simulations in MATLAB and ANSYS

Microgrid for High-Surety Power: Architectures, Controls, Protection, and Demonstration 383

5 s/div
Fault current
(i o 200 A/div)

911 V Voltage of the
solid-state breaker
(u 200 V/div)
ce

0

(a)
5 s/div
Voltage of positive bus
(u 200 V/div)
ce2
940 V Voltage of negative bus
890 V (u 200 V/div)
ce1

0
Fault current
(i 200 A/div)
o
(b)

FIGURE 14.27 Waveforms of short-circuit protection. (a) Waveform under short-circuit fault between the
positive bus and neutral bus. (b) Waveform under short-circuit fault between the positive bus and negative bus.

1000

900

Voltage (V) 800

700

600 Theoretical results
Experimental results
500
10 100 1×10 3 1×10 4
Current (A)

FIGURE 14.28 Voltage stress of solid-state breaker.