Dual motor drive system, control device for the same, and...

Details Dual motor drive system, control device for the same, and... Dual motor drive system, control device for the same, and...

2007-08-07

2009-12-22

Masih, Karen (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S085000, C318S800000

Reexamination Certificate

active

07635963

ABSTRACT:
An inverter having M×N arms is connected to a first motor having N groups of M phase coils and a second motor having M groups of N phase coils. At least one of the first motor and the second motor has as many teeth as the number of phases of the motor multiplied by an integer, and the M×N coils of the motor are wound around the teeth by equal to or more than two coils for each of the teeth. Drive points of the M×N coils of the first motor are connected to output points of the corresponding arms of the inverter. Drive points of the N×M coils of the second motor are connected to output points of the arms of the inverter, so that each of the N phase windings in each of the M groups of the second motor is connected to each of the N drive points of the first motor, the N drive points having the same phase. A controller feeds M×N pulse width modulation control signals to the inverter for the first motor and the second motor in a time-division manner, so that the first and the second motors are driven individually with the single inverter.

REFERENCES:
patent: 2004/0232877 (2004-11-01), Kawaji et al.
patent: 2001-103717 (2001-04-01), None
patent: 2001-231227 (2001-08-01), None

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