ELECTRIC MACHINE FOR HYBRID POWERTRAIN WITH ENGINE BELT DRIVE
First Claim
1. An electric machine comprising:
- a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles;
wherein the rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles;
wherein the multiple barrier layers are positioned adjacent one another between an inner periphery of the rotor core and an outer periphery of the rotor core and include a first barrier layer nearest the inner periphery;
permanent magnets disposed in at least the first barrier layer;
a stator assembly surrounding the rotor assembly;
wherein the electric machine is configured to function as a motor in a motoring mode and as a generator in a generating mode; and
wherein the rotor assembly, the stator assembly, and the permanent magnets are configured with parameters selected to provide at least one of a predetermined efficiency at rated power, a predetermined power density, a predetermined torque density, a predetermined peak power range, or a predetermined maximum speed of the electric machine in the motoring mode or in the generating mode.
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Accused Products
Abstract
An electric machine is provided that has a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles. The rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles. The multiple barrier layers are positioned adjacent one another between an inner periphery of the rotor core and an outer periphery of the rotor core and include a first barrier layer nearest the inner periphery. Permanent magnets are disposed in at least the first barrier layer. A stator assembly surrounds the rotor assembly. The electric machine is configured to function as a motor in a motoring mode and as a generator in a generating mode. The electric machine is configured with predetermined operating parameters selected for optimizing operation in the motoring mode and/or the generating mode.
41 Citations
20 Claims
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1. An electric machine comprising:
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a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles; wherein the rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles;
wherein the multiple barrier layers are positioned adjacent one another between an inner periphery of the rotor core and an outer periphery of the rotor core and include a first barrier layer nearest the inner periphery;permanent magnets disposed in at least the first barrier layer; a stator assembly surrounding the rotor assembly; wherein the electric machine is configured to function as a motor in a motoring mode and as a generator in a generating mode; and wherein the rotor assembly, the stator assembly, and the permanent magnets are configured with parameters selected to provide at least one of a predetermined efficiency at rated power, a predetermined power density, a predetermined torque density, a predetermined peak power range, or a predetermined maximum speed of the electric machine in the motoring mode or in the generating mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification