Model-Based Fault Detection and Isolation of a Liquid-Cooled Frequency Converter on a Wind Turbine

Table 6

Auxiliary signals of active fault detection for detecting startup faults.

Fault type	Auxiliary signal	Time
Air in cooling system	𝑞 = 0[L/min] or (𝑞 =0 [m^3/s]); 𝑃total =1570 [W]	250 s
Phase module cooling; channel clogging	𝑞 = 5[L/min]; (𝑞 = 8.33×10^−5 [m^3/s]) 𝑃total=1570 [W]	250 s