Mutli-teeth switched reluctance motor with short flux path

A switched reluctance machine comprising:

• an axially extending shaft;
• an axially extending rotor mounted to the shaft, the rotor having a plurality of salient rotor poles;
• an axially extending stator disposed coaxially and concentrically with the rotor, the stator having a plurality of salient stator poles protruding radially from the stator towards the rotor poles, the stator further having a plurality of stator teeth and tooth-tips;
• and
• a plurality of electrical coils wound about the stator poles, the plurality of electrical coils including a plurality of separate phase coils defining a plurality of phases of the switched reluctance machine,
• wherein a number of stator poles is related to a number of rotor poles, a number of stator teeth, a number of stator teeth per stator pole, and a number of adjacent poles having opposite polarities, and a number of phases, according to equation (1) and at least one constraint condition:
• N
• s
• =
• N
• t
• ×
• LCM
• 
• (
• N
• s
• ,
• N
• r
• )
• N
• r
• ×
• N
• ph
• ×
• S
• 1
• ×
• S
• 2
• (
• 1
• )
• wherein Nph is the number of phases when Ns=Nr+2 if S1=2, and
• wherein Ns is the number of stator poles, Nr is the number of rotor poles, Nt is the number of stator teeth, Nph is the number of phases, S1 is the number of stator teeth per stator pole, S2 is the number of adjacent poles having opposite polarities, and LCM is the lowest common multiple of number of stator poles and number of rotor poles.