A method for moving a rotor in a planar drive system having a first and second stator modules and a rotor. The stator modules are arranged at a distance, forming a gap. First and second magnetic fields are generated by the first and stator modules. The first and second magnetic fields hold the rotor in a vertical position, at a distance from a surface of the first and/or second stator module. The first and/or second magnetic fields have a first magnetic field strength to maintain the rotor in the vertical position, and may be used to change a horizontal position of the rotor. The first stator module has a first close range adjacent the gap, where the first magnetic field has a second field strength when the rotor is moved across the gap, greater than the first magnetic field strength.

A rotating electrical machine such that a power supply unit can be efficiently cooled, with no increase in size in an axial direction of the rotating electrical machine, is provided. A rotating electrical machine main body and a power supply unit are integrally fixed, and a refrigerant passage is provided on the rotating electrical machine main body side of a metal frame configuring the power supply unit. The refrigerant passage and a control part that controls power supplied to the rotating electrical machine main body are disposed in the same plane in an axial direction of the rotating electrical machine main body, and the refrigerant passage is disposed farther to a radial direction outer side of the rotating electrical machine main body than the control part.

A rotating electrical machine such that a power supply unit can be efficiently cooled, with no increase in size in an axial direction of the rotating electrical machine, is provided. A rotating electrical machine main body and a power supply unit are integrally fixed, and a refrigerant passage is provided on the rotating electrical machine main body side of a metal frame configuring the power supply unit. The refrigerant passage and a control part that controls power supplied to the rotating electrical machine main body are disposed in the same plane in an axial direction of the rotating electrical machine main body, and the refrigerant passage is disposed farther to a radial direction outer side of the rotating electrical machine main body than the control part.

A modular motor system and methods wherein at least two dual radial gap motors with attachment points may be joined together in a modular manner for the purpose of providing the capability of incrementally increasing or decreasing the total power output of the modular.

A modular motor system and methods wherein at least two dual radial gap motors with attachment points may be joined together in a modular manner for the purpose of providing the capability of incrementally increasing or decreasing the total power output of the modular.

A rotating electrical machine includes a stator, a rotor with a permanent magnet, a first number of one or more first coils, and a second number of one or more second coils. The second number is different from the first number. The one or more first coils are disposed on the stator. The one or more second coils are disposed on the rotor. The one or more first coils and the one or more second coils are disposed on the stator and the rotor, respectively, in such a manner as to closely oppose each other in a state where the rotor is at a predetermined rotation angle position. The one or more first coils are arranged to induce a voltage in response to a relative position with respect to the one or more second coils.

A rotating electrical machine includes a stator, a rotor with a permanent magnet, a first number of one or more first coils, and a second number of one or more second coils. The second number is different from the first number. The one or more first coils are disposed on the stator. The one or more second coils are disposed on the rotor. The one or more first coils and the one or more second coils are disposed on the stator and the rotor, respectively, in such a manner as to closely oppose each other in a state where the rotor is at a predetermined rotation angle position. The one or more first coils are arranged to induce a voltage in response to a relative position with respect to the one or more second coils.

Air circulation passages connect an accommodation space of an electronic control unit to the outside to circulate air to buffer internal pressure fluctuations. The accommodation space side of the air circulation passages is formed as a divided air circulation passage with a plurality of passages, a cooling object member is arranged to come in thermal contact with air flowing through the divided air circulation passage, and the total cross-sectional area of the divided air circulation passage is smaller than the cross-sectional area of the air circulation passages that are not divided. Because the accommodation space of the electronic control unit is connected to the outside, internal pressure fluctuations can be buffered, and increasing the flow velocity of the air flowing through the divided air circulation passage on the accommodation space side of the air circulation passages allows heat inside the accommodation space to be efficiently radiated to the outside.

A motor retainer is provided on an inner circumferential surface of a housing and retains an outer circumference of a motor unit. A rotation detector includes a rotating body attached to a motor shaft and a position detector that outputs a rotational position signal corresponding to a rotational position of the rotating body. A sensor substrate retainer is provided on the inner circumferential surface of the housing and retains the position detector at a position facing the rotating body.

An arrangement of at least one sensor track-scanning rotor position sensor (1, 1 A) of an electric machine (EM) in a hybrid transmission housing (2) that includes a torque converter (3) and a housing-affixed oil supply plate arrangement is provided. The rotor position sensor (1, 1 A) is attached on an oil-supply-plate side, and a sensor ring (8), as a sensor track, is attached on a converter side. A hybrid transmission housing (2) including the arrangement is also provided.