H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 7/00 (2006.01) H02K 11/00 (2006.01) H02P 9/02 (2006.01)
Patent
CA 2657070
A permanent magnet machine (PMM) has a kinetic portion (12) electrically coupled to a power conversion portion (14). Motive power is provided to the kinetic portion (12) by a torque applied to a motive shaft coupled to a prime mover, such as an aircraft engine or an automobile engine. A control circuit includes a switch (40) disposed between the kinetic portion (12) and output feeder cables of the power conversion portion. A first sensor (50) is effective to detect a first fault condition in either the feeder cables or the power conversion portion (14) and a second sensor (54) is effective to detect a second fault condition in the kinetic energy portion (12). The first sensor (50) is effective to open the switch (40) when a first fault condition is detected and the second sensor (54) is effective to apply a voltage to a winding (26a, 26b, 26c) within the kinetic portion (12) generating an opposing counter torque on the motive shaft where a combination of torque and counter torque exceeds a fracture yield strength of said motive shaft causing it to fracture. The second fault condition is then rendered safe while the prime mover may continue normal operation. (Drawing Figure 3)
Astronics Advanced Electronic Systems Corp.
Smart & Biggar
LandOfFree
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