Title :
Fault interrupting methods and topologies for interior PM machine drives
Author :
Welchko, Brian A. ; Jahns, Thomas M. ; Lipo, Thomas A.
Author_Institution :
Gen. Motors Adv. Technol. Center, Torrance, CA, USA
Abstract :
This work investigates methods to interrupt the phase currents induced when interior permanent magnet (IPM) machine drives suffer short-circuit or uncontrolled generator mode faults. A fault-tolerant silicon switch is proposed in which the antiparallel diode in a reverse-blocking inverter switch is replaced by a thyristor. A reduced-parts-count fault-interrupting topology is also proposed which consists of delta-connected thyristors inserted at the center star point of wye-connected IPM machine stator windings. Control of the proposed reduced-parts-count fault-tolerant drive is discussed and simulation results are presented to verify operation of the proposed topology.
Keywords :
fault tolerance; invertors; machine protection; permanent magnet machines; power semiconductor switches; short-circuit currents; silicon; stators; synchronous machines; thyristor convertors; variable speed drives; antiparallel diode; center star point wye-connected IPM machine; delta-connected thyristors; fault interrupting methods; fault-tolerant silicon switch; interior permanent magnet machine drives; inverter shutdown; machine protection; phase current interruption; reverse-blocking inverter switch; short-circuit fault; stator windings; uncontrolled generator; uncontrolled generator mode faults; variable speed drive; Diodes; Drives; Fault tolerance; Inverters; Permanent magnets; Silicon; Stator windings; Switches; Thyristors; Topology;
Journal_Title :
Power Electronics Letters, IEEE
DOI :
10.1109/LPEL.2004.841494