초록 ▼

A switched reluctance d.c. motor having a plurality stators has been disclosed. Each stator comprises phase windings for energizing a set of stator poles. The stator poles are distributed about the circumference of the stator yoke. Two phases activated in succession are associated with distinct ones

A switched reluctance d.c. motor having a plurality stators has been disclosed. Each stator comprises phase windings for energizing a set of stator poles. The stator poles are distributed about the circumference of the stator yoke. Two phases activated in succession are associated with distinct ones of the plurality of stators. The motor of the present invention operates under a wide range of rotational speeds while reducing the switching losses and audible noise in the rotor and stator iron.

대표청구항 ▼

A switched reluctance (SR) motor driven by phase drivers providing four phases for energizing a set of stator pole phase windings for attracting a set of rotor poles, the stator poles being separated by a radial gap from the rotor poles when oriented with the rotor poles for maximum inductance, and

A switched reluctance (SR) motor driven by phase drivers providing four phases for energizing a set of stator pole phase windings for attracting a set of rotor poles, the stator poles being separated by a radial gap from the rotor poles when oriented with the rotor poles for maximum inductance, and the four phases being commutated in accordance with rotational orientation feedback signals in a sequential order of first, second, third, and then fourth phase, said SR motor comprising: a stator assembly including: a first stator including an even number of poles, the even number of poles being associated with a first phase and a third phase of the four phases, the first phase and third phase being magnetically coupled to the first stator via phase windings associated with alternating ones of the even number of poles of the first stator; and a second stator, including an even number of poles, the even number of poles being associated with a second phase and a forth phase of the four phases, the second phase and forth phase being magnetically coupled to the second stator via phase windings associated with alternating ones of the even number of poles of the second stator; and a rotor assembly including: a first rotor, coupled to a drive shaft, having an even number of poles, the even number of poles being no greater than one half the number of stator poles in the first stator assembly; a second rotor, coupled to the drive shaft, having an even number of poles, the even number of poles being no greater than one half the number of stator poles in the second stator assembly, and wherein the first rotor and the second rotor are rotationally oriented such that when the rotor poles for the first rotor are radially aligned with stator poles associated with a phase of the first stator in a position forming maximum inductance paths, the rotor poles for the second rotor are radially disaligned with the stator poles associated with the second and fourth phases of the second stator.