The problem started after a police officer woke him up and asked him to pay 100,000 yen ($911.05) for a broken bar
"It's never been touched by vandals, nothing's ever been broken bar
the kids might accidentally knock a piece over.
By this model two types of faults are studied; the broken bar
, and the inter turn short circuit.
Higher amount of magnetic saturation can be seen around the broken bar
in the rotor as a lack of frequency-induced current in these rotor bars.
"Pattern recognition-a technique for induction machines rotor broken bar
detection," IEEE Trans.
Figure 15(a) shows a rotor with one broken bar
(1BB) and Figure 15(b) depicts a rotor having two broken bars
System fault diagnosis system is used for detecting bearing fault and broken bar
fault of the motor in the process of aluminum electrolysis.
The main types of these faults are inter-turn short circuit of stator winding, which represents about 30%, and broken bar
, which represents about 10%.
As stated in this paper, literally, "the load on the motor should be sufficiently high to produce at least 35% of rated full load rotor slip for a reliable single-test broken bar
analysis." and "if the motor to be tested is fed from a variable-speed converter drive, the frequency of the drive should be locked at the 50/60 Hz power supply frequency for the test." Yet, difficulties emerge when inverted-fed motors are applied to drive fans, pumps, or other mechanisms involving speed control for energy-saving purpose.
But now a cookie is an object roughly the size of a frisbee, which could do with another 10 minutes in the oven, and is filled with lumps of chocolate equivalent in volume to a broken bar
of Cadbury's Dairy Milk.
Toliyat, "Pattern recognition- A technique for induction machines rotor broken bar
detections," IEEE Trans.
"There were numerous upturned tables and broken bar
stools strewn across the floor area of the bar.