Abstract: The invention is a rectifier assembly (10) having reduced mass and high rigidity permitting operation at high rotational speeds. The rotating rectifier includes a rotator shaft assembly (12), a first conductive diode carrier (18), a second conductive diode carrier (20), first and second electrical conductors (40 and 44) connected to the first and second diode carriers and to one end of the rectifier assembly to provide a first DC output and a second DC output and first, second and third diode groups (37, 37', 37"). Each conductive diode carrier has an inner annulus (24) including first, second and third diode receiving surfaces (26, 28 and 30) disposed at spaced apart locations on the inner annulus of the diode carrier and an outer periphery which engages an inner annulus of the rotor shaft assembly. Each diode group comprises at least two diodes (38).

Abstract: A generator system having an auxiliary forced cooling-oil lubrication system in which a second pump for the fluid is driven in a self sustaining cooling and lubricating cycle, despite the failure of a primary pump action. The second pump can be electrically or mechanically driven to cause a reserve portion of the cooling-oil lubricant to recycle from a secondary reservoir. This secondary reservoir reserves a fluid capacity not circulated by gravity feed in a primary fluid circulating path, which normally returns the fluid to a primary reservoir. A primary pump circulates the fluid through a primary portion of a heat exchanger with an oil-to-fuel heat exchange transfer to sustain the cooling and lubricating functions of the generator system and the failure mode, second pump sustains cooling operations of a permanent magnet generator, despite the failure of a primary pump or loss of fluid circulating in the primary circulation path.

Abstract: A method for automatically replenishing oil in a coolant system of an electric generator produces a first signal representative of the speed of the generator and a second signal representative of the pressure of oil in the coolant system of the generator. These signals are combined with a reference signal to produce a control signal representative of a low oil condition in the coolant system. When such low oil condition exists, additional oil is delivered to the coolant system in response to the control signal. In the preferred embodiment, this additional oil is supplied from a source of high pressure oil.

Abstract: A generator system having a failure mode cooling-oil lubricating auxiliary compartment structurally integrated into the generator casing so as to provide a supplement to primary cooling and lubrication functions. A coupled driving unit and generating unit of an aircraft generating system has primary pump cooling and lubricating functions during productive rotating electrical power generation, and cooling friction and windage cooling function and a residual lubrication function is used for critical rotating components, during a fault mode of electrical non-power output production in the generator. This is provided in order to retard or eliminate damage and destruction of the coupled driving and generator units during an extended interim without power output of a failed generator unit, such as when its primary cooling and lubricating components have ceased to function.

Abstract: An AC power generating system includes an array of permanent magnet alternators. The stator windings of these alternators are electrically connected in series and the total output voltage of the alternator array is regulated by adjusting the relative angular positions of the stators to control the phase angle of the output voltage of each alternator. The alternators employ an inside-out design wherein a plurality of permanent magnets are positioned at circumferentially displaced locations on an internal surface of a nonmagnetic support structure to form the rotor. A stator having a core with longitudinal slots for receiving a stator winding is positioned within the rotor structure such that relative rotation between the stator and rotor induces a voltage in the stator winding.

Abstract: A transmission for an electrically powered vehicle includes an output shaft having a central axis and a carrier gear mounted to rotate about that axis. The carrier gear is driven by at least one electric motor and is coupled to the output shaft by an over-running clutch. A plurality of planetary gears are mounted on shafts which are attached to the carrier gear and positioned to engage a sun gear on the output shaft and a ring gear. A housing surrounds the gear assembly and a mechanism is provided to inhibit rotation of the ring gear thereby increasing the speed of the output shaft relative to the speed of the carrier gear.

Abstract: A self-cooled rotating electrical machine is provided with multiple axial and radial coolant passages. Wedges within the interpolar spaces of a salient pole rotor provide an axial coolant path which receives coolant deflected by vanes on the end of the wedges. Coolant expelled at the center of the wedges passes through axial passages in the stator and through a gap between the rotor and stator. Impeller tabs on the ends of the wedges force coolant around stator windings. Recirculation of coolant is prevented by shrouds attached to the ends of the wedges.