Integrated starter generator system
AssigneeSedemac Mechatronics Pvt Ltd
InventorsAmit Dixit, Anaykumar Joshi
Life of this patent
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Abstract
An Integrated Starter Generator system (100) comprising a battery (110) and a three-phase brushless DC electric machine (130). The electric machine (130) has a stator (132) with 3n stator teeth (132′), ‘n’ being a natural number, and each stator tooth (132′) has a coil corresponding to one of the three phases. The electric machine (130) further has a rotor (134) with 4n rotor poles (134′) facing the stator (132), and magnets on the rotor poles (134′) are disposed with an alternating sequence of magnet polarity facing the stator (132). Herein, back-emf constant of the electric machine (130) is substantially between 25% of a nominal battery voltage and 75% of the nominal battery voltage.
Claims6
An Integrated Starter Generator system (100), comprising:
- a battery (110);
- and
- an electric machine (130) having:
- a stator (132) with 3n stator teeth (132′), ‘n’ being a natural number, each stator tooth (132′) having a coil corresponding to one of the three phases;
- and a rotor (134) with 4n rotor poles (134′) facing the stator (132), magnets on the rotor poles (134′) being disposed with an alternating sequence of magnet polarity facing the stator (132);
- wherein an average width of each stator teeth (132′) is smaller than 1.2 times the diameter of the stator (132) divided by number of stator teeth (132′);
- and
- wherein a back-emf constant of the electric machine (130) is substantially between 25% of a nominal battery voltage and 75% of the nominal battery voltage.
Dependencies are inferred from the claim text.