To prevent a rise in temperature of particular switching elements during a back-flow mode so as to miniaturize a motor drive device and to reduce the cost, and to increase a short-time maximum torque of a motor as well.
The motor drive device switches switching elements of an inverter 2 which become on-state according to a prescribed back-flow passage pattern during a back-flow mode to any of switching elements Sua(Sva, Swa), Sub(Svb, Swb) of an upper or a lower arm in a driving phase, switches periodically short-circuit paths at the both ends of stator windings Lu, Lv, and Lw in a SR motor 1 during a back-flow mode to any of a plurality of back-flow passages including respective switching elements Sua(Sva, Swa), Sub(Svb, Swb) of the upper or lower arms in the driving phase. Thus a concentration of electric current during the back-flow mode to a particular switching element of the upper or lower arms in a driving phase can be avoided to prevent a temperature rise in a particular switching element during the back-flow mode.
| JP2001339973 | MOTOR CONTROL METHOD |
| JP3697623 | CONTROLLER FOR CHOPPED CONDUCTION |
| JPH10146083 | CONTROLLER OF SWITCHED RELUCTANCE MOTOR |
SHIMONAGAYOSHI HIROCHIKA
MANABE KOSUKE
| JPH11235085A | 1999-08-27 | |||
| JPH03190570A | 1991-08-20 |
Kakusho Shoichi
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