An induction motor or generator assembly for converting either of an electrical input or rotating work input to a mechanical/rotating work or electrical output. An outer annular arrayed component is rotatable in a first direction and includes a plurality of magnets arranged in a circumferentially extending and inwardly facing fashion according to a first perimeter array, the outer component further incorporating a rotating shaft projecting from a central location. An inner concentrically arrayed and reverse rotating component exhibits a plurality of outwardly facing and circumferentially spaced array of coil-subassemblies opposing the magnetic elements, such that a gap separates the coil-subassemblies from the magnets. The coil sub-assemblies each include a plurality of concentrically arrayed coils configured within a platform support of the inner component. A plurality of stacked commutator segments each have a plurality of annular extending and individually insulated segments arranged in exteriorly facing manner.

An electric motor assembly includes an axle having a first end and a second end. A plurality of rotor stages is attached to the axle. The rotor stages each include a set of rotor magnets. Each set has a greater potential magnetic field as the sets are located further from the first end. A plurality of stators is positioned around the rotor stages so that each of the rotor stages is adjacent to and covered by one of the stators to define a plurality of mated pairs. The stators each include a plurality of stator magnets. A stator control, for controlling individual ones of the pairs, is electrically coupled to each of the stators and magnetizes the stator magnets in a controlled fashion with respect to the rotor magnets to urge the rotor magnets in a same direction and rotate the axle.

An electric motor includes a housing, a rotor rotatable about an axis, a stator including a core and a plurality of coils wound about the core, a commutator, and a fluid-driving element configured to drive a fluid. The housing defines an internal chamber including a stator-receiving space at least substantially receiving the stator, a commutator-receiving space at least substantially receiving the commutator, and an element-receiving space at least substantially receiving the fluid-driving element. The housing further defines a cooling pathway fluidly interconnected with the internal motor chamber and disposed at least in part radially outside the stator. The fluid-driving element and the housing are cooperatively configured to direct the fluid through each of the stator-receiving space, the commutator-receiving space, the element-receiving space, and the cooling pathway.

An electric motor includes a housing, a rotor rotatable about an axis, a stator including a core and a plurality of coils wound about the core, a commutator, and a fluid-driving element configured to drive a fluid. The housing defines an internal chamber including a stator-receiving space at least substantially receiving the stator, a commutator-receiving space at least substantially receiving the commutator, and an element-receiving space at least substantially receiving the fluid-driving element. The housing further defines a cooling pathway fluidly interconnected with the internal motor chamber and disposed at least in part radially outside the stator. The fluid-driving element and the housing are cooperatively configured to direct the fluid through each of the stator-receiving space, the commutator-receiving space, the element-receiving space, and the cooling pathway.

A brush holder device includes: a pair of brush holders placed on a base to slidably hold brushes, respectively, in directions orthogonal to an outer circumferential surface of a commutator; first and second supporting columns are erected next to each other in a region between the pair of brush holders; and first and second torsion springs including wound portions fit around the respective supporting columns, first ends extend from the wound portions serving as working ends to abut against the respective brushes, and second ends extend from the wound portions serving as reaction ends to be restrained by outer circumferential surfaces of the supporting columns on the respective opposite sides.

A brush holder device includes: a pair of brush holders placed on a base to slidably hold brushes, respectively, in directions orthogonal to an outer circumferential surface of a commutator; first and second supporting columns are erected next to each other in a region between the pair of brush holders; and first and second torsion springs including wound portions fit around the respective supporting columns, first ends extend from the wound portions serving as working ends to abut against the respective brushes, and second ends extend from the wound portions serving as reaction ends to be restrained by outer circumferential surfaces of the supporting columns on the respective opposite sides.

An electromagnetic interference (EMI) circuit assembly includes a first, second, and third conductive layer. A protection component disposed between the first and second conductive layers. A dielectric layer is disposed between the second and the third conductive layers. The protection component is configured to protect a load from one or both of an overcurrent condition and an over temperature condition, and the third layer define a capacitor configured to suppress EMI signals.

An electromagnetic interference (EMI) circuit assembly includes a first, second, and third conductive layer. A protection component disposed between the first and second conductive layers. A dielectric layer is disposed between the second and the third conductive layers. The protection component is configured to protect a load from one or both of an overcurrent condition and an over temperature condition, and the third layer define a capacitor configured to suppress EMI signals.

There is provided a starting system for reliably starting a turbine engine, the system including first and second circuits connected in parallel and arranged between a battery of the engine and a DC starter of the engine, the first circuit including a DC-DC converter connected in series with a first switch and the second circuit including a second switch; a sensor configured to sense a speed of rotation of a compressor of the engine; a sensor configured to sense a temperature at an inlet to a free turbine of the engine; and a control circuit configured to control the first and second switches as a function of information supplied by the sensor configured to sense the speed of rotation of the compressor and by the sensor configured to sense the inlet temperature of the free turbine.

There is provided a starting system for reliably starting a turbine engine, the system including first and second circuits connected in parallel and arranged between a battery of the engine and a DC starter of the engine, the first circuit including a DC-DC converter connected in series with a first switch and the second circuit including a second switch; a sensor configured to sense a speed of rotation of a compressor of the engine; a sensor configured to sense a temperature at an inlet to a free turbine of the engine; and a control circuit configured to control the first and second switches as a function of information supplied by the sensor configured to sense the speed of rotation of the compressor and by the sensor configured to sense the inlet temperature of the free turbine.