The object of the present invention is to provide a device that allows the intermittent operation of the cooling fan, with a mechanism controlled by the stator temperature, to reduce whipping losses and improve the operating efficiency of three-phase induction motors for industrial use, such as those that operate pumps, compressors, conveyors, fans, welding machines and die cutters, among others.

An axial flux induction machine includes at least two stators and one rotor where the stators include an inner and outer ring of coils. The stator includes two mirrored structures constructed such as to secure wire coils, amplify magnetic characteristics, and provide a structure upon which to secure a rotary shaft. The structures supporting the outer ring of coils can be in contact between the two stators and the outer ring can be spaced further from the rotary shaft than the inner ring of coils and also further from the rotary shaft than an outer edge of the rotor.

An axial flux induction machine includes at least two stators and one rotor where the stators include an inner and outer ring of coils. The stator includes two mirrored structures constructed such as to secure wire coils, amplify magnetic characteristics, and provide a structure upon which to secure a rotary shaft. The structures supporting the outer ring of coils can be in contact between the two stators and the outer ring can be spaced further from the rotary shaft than the inner ring of coils and also further from the rotary shaft than an outer edge of the rotor.

A modular stator-inverter assembly for an electric machine includes a stator and a traction power inverter module (“TPIM”). The stator includes a stator core having a center axis, an inner diameter (“ID”), an outer diameter (“OD”), and electrical conductors forming stator windings. Stator teeth extending radially toward the center axis from the ID collectively define stator slots occupied by the stator windings. Each adjacent pair of stator teeth defines a respective stator slot. The TPIM delivers a polyphase voltage to the stator windings to generate a predetermined number of stator poles, such that the stator has either two, three, or four of the stator slots per electric phase per stator pole. The stator defines a center cavity and is configured to receive a selected rotor from an inventory of preconfigured machine rotors. The inventory includes multiple synchronous reluctance machine rotors and an induction machine rotor.

A modular stator-inverter assembly for an electric machine includes a stator and a traction power inverter module (“TPIM”). The stator includes a stator core having a center axis, an inner diameter (“ID”), an outer diameter (“OD”), and electrical conductors forming stator windings. Stator teeth extending radially toward the center axis from the ID collectively define stator slots occupied by the stator windings. Each adjacent pair of stator teeth defines a respective stator slot. The TPIM delivers a polyphase voltage to the stator windings to generate a predetermined number of stator poles, such that the stator has either two, three, or four of the stator slots per electric phase per stator pole. The stator defines a center cavity and is configured to receive a selected rotor from an inventory of preconfigured machine rotors. The inventory includes multiple synchronous reluctance machine rotors and an induction machine rotor.

A dual motor system includes a first motor providing a lower speed range and a second motor providing a higher speed range, wherein the motors are coaxially arranged and aligned on and drive a common shaft, and a motor control system controlling the speed of the first motor and engaging the second motor as needed. The first motor is a variable speed motor providing a lower two-thirds of a full speed range, and the second motor is an induction motor providing the upper one-third in the form of one or more discrete fixed speeds. The system may include a transformer including a first winding tap which provides a first higher speed, and a second winding tap which provides a second higher speed. The system may also include a flow control system for automatically controlling the speed of the motors for particular applications, such as flow control in a pool.

A stator for a multiphase electric motor includes a plurality of laminates stacked to form a cylindrical stator core having a plurality of longitudinal slots; a plurality of electrical conductors grouped into a plurality of discrete electrical circuits, each of the plurality of the electrical conductors forming a plurality of coils in the slots spaced about the stator core, and each of the coils having a pair of leads; a plurality of bus cables, each of the plurality of bus cables having a mechanical connection to the pluralities of coils at ends of the slots; and wherein one of the leads from each of the coils is electrically connected to one of the plurality of bus cables.

A stator for a multiphase electric motor includes a plurality of laminates stacked to form a cylindrical stator core having a plurality of longitudinal slots; a plurality of electrical conductors grouped into a plurality of discrete electrical circuits, each of the plurality of the electrical conductors forming a plurality of coils in the slots spaced about the stator core, and each of the coils having a pair of leads; a plurality of bus cables, each of the plurality of bus cables having a mechanical connection to the pluralities of coils at ends of the slots; and wherein one of the leads from each of the coils is electrically connected to one of the plurality of bus cables.

A method for the providing and generation of constant motive power for electric vehicles to travel on roads uninterruptedly using high voltage alternator and transformers/substationstep-up transformers and/or step-down down transformers to appropriate desirable is disclosed. The present invention presents the idea of using a combination of a high voltage alternating circuit induction motor and a step-down transformer and their embodiments to step the voltage down to more desirable and useable level of volts depending on the capacity/size for a continuous supply of electricity for electric vehicles. The present invention allows electric vehicles to operate without distance limitation or battery pack losing power and whose disposal is an environmental hazard apart from cutting or reducing greenhouse gas as few or there will be no more mass production of internal combustion engines. The present invention uses high voltage from an alternator whose voltage is increased by a step-up transformer then goes through a substation and this power is decreased by a step-down transformer so that a lower voltage powers electric vehicle of all sizes/capacity. The summary is that when the power is passed through the step-up transformer, the primary side has few turns of wire; and the voltage decreases; and current is increased; but in the secondary side, with more turns of wire, the voltage increases but the current is decreased. In the case of the step-down transformer, the voltage is increased in the primary side with many turns of coils, but on the secondary side with few turns of coils, the voltage is decreased, and the current is increased, thus giving the vehicle power to operate.

A method for the providing and generation of constant motive power for electric vehicles to travel on roads uninterruptedly using high voltage alternator and transformers/substationstep-up transformers and/or step-down down transformers to appropriate desirable is disclosed. The present invention presents the idea of using a combination of a high voltage alternating circuit induction motor and a step-down transformer and their embodiments to step the voltage down to more desirable and useable level of volts depending on the capacity/size for a continuous supply of electricity for electric vehicles. The present invention allows electric vehicles to operate without distance limitation or battery pack losing power and whose disposal is an environmental hazard apart from cutting or reducing greenhouse gas as few or there will be no more mass production of internal combustion engines. The present invention uses high voltage from an alternator whose voltage is increased by a step-up transformer then goes through a substation and this power is decreased by a step-down transformer so that a lower voltage powers electric vehicle of all sizes/capacity. The summary is that when the power is passed through the step-up transformer, the primary side has few turns of wire; and the voltage decreases; and current is increased; but in the secondary side, with more turns of wire, the voltage increases but the current is decreased. In the case of the step-down transformer, the voltage is increased in the primary side with many turns of coils, but on the secondary side with few turns of coils, the voltage is decreased, and the current is increased, thus giving the vehicle power to operate.