Abstract: A thermionic paired tube bank (100) designed for use as a tubular heat exchanger for generating electricity, preferably heated by combustion products after they leave the combustor of a power plant but before they enter the turbine or steam generator portion of the power generation system. In this case the thermionics act as a topping cycle to increase the overall electrical generation efficiency. The heat could also be supplied by the products of combustion as they leave the gas turbine or steam generator in which case the thermionics would act as a bottoming cycle. The thermionic paired-tube bank comprises a plurality of paired-tube thermoelectric couples (50) and a plurality of electrical connections (66, 68).

Abstract: A technique for forming stator coils for an electric motor is disclosed. The technique includes forming D-shaped or generally trapezoidal coils having a closed loop defining a long side and a short side joined by end portions. The coils are installed in a stator core having a plurality of slots formed around its inner periphery. The long sides of the coils are disposed in a predetermined position within these slots, such as in a lower position, while the short sides are disposed in opposite positions, such as in upper positions. The long sides extend beyond the short sides at end regions of the stator core. The end portions of each coil wrap around the ends of the stator core and incline from the long side of the respective coil to the short side thereof. Crossing points are established between the long side of each coil and end portions of adjacent coils.

Abstract: The invention concerns a permanently excited transverse flux machine which requires only one permanent magnet segment per phase and per magnetic circuit. The magnetic flux generated by a permanent magnet segment (3) flows alternately through the soft magnetic body on two conductor rings (7) of this transverse flux machine. The conductor rings (7) are arranged on different sides of the permanent magnet segment, the direction of flux in the permanent magnet segments corresponding to the direction of magnetic flux in the two air gaps through which said flux passes. Preferably, the permanent magnet segments are arranged between two U-shaped halves of a square wound C-core constituting the rotor bodies (5). The stator bodies (6) are also prefabricated from grain-oriented materials as U-shaped C-cores.

Abstract: A permanent magnet electric generator has a raised output as compared with the output of a similar conventional permanent magnet generator in which the polar arcuate angle of the permanent magnets is equal to the polar arcuate angle of controlling magnetic poles. Electricity is generated in armature coils 16 by the rotation of permanent magnets 8 of a rotor 4. Controlling magnetic poles 9 formed of a magnetic material are interposed between the permanent magnets 8 of the rotor 4, and a field controlling coil 17 is provided on a stator 11. The value of the polar arcuate angle .theta. m of the permanent magnets 8 divided by the sum of the polar arcuate angle .theta. m of the permanent magnets 8 plus the polar arcuate angle .theta. p of the controlling magnetic poles 9 is set at 0.55 to 0.7.

Abstract: An improved, brushless, slot-less DC motor is disclosed which includes a plurality of ring shaped permanent rotor magnets affixed to the motor shaft and magnetized to have contiguous pole faces extending about the circumference thereof. A module plastic housing impregnated with powder metal particles is provided as a magnetic shunt to eliminate prior art ferrite-oxide laminations while assuring concentration of the rotor's magnetic flux into coils positioned in the physical air gap between the rotor and stator housing.