797results about How to "High power transmission efficiency" patented technology

A hybrid drive apparatus is provided and enables efficient energy regeneration by the motor generator by separating the power transmission path through which the driving force from the engine is transmitted, from the power transmission path between the motor generator and the drive wheels, and also makes it possible to achieve a variety of driving modes while improving power transmission efficiency. In a hybrid drive apparatus (1) having an engine (10), a motor generator (20), and a planetary gear mechanism (30) in which the output shaft (21) of the motor generator (20) is coupled to a sun gear (S), the output shaft (11) of the engine (10) is coupled to a ring gear (R), and the input shaft (42) of a continuously variable transmission mechanism (40) is coupled to a carrier (C), the hybrid drive apparatus (1) includes a first clutch (C1) that can switch engagement / disengagement between the output shaft (11) of the engine 11 and the ring gear (R), a second clutch (C2) that can switch engagement / disengagement between the carrier (C) and the ring gear (R), and a third clutch (C3) that can switch engagement / disengagement on the input shaft (42) of the transmission mechanism (40).

An AC power controller system applies three-phase AC operating power to an induction motor that drives a non-linear mechanical load. A primary low pass filter is connected in series between branch phase conductors and a power controller of the type that uses gate-controlled switching thyristors for controlling power to the motor. KVAR capacitors connected between the power controller and the induction motor phase windings form a secondary low pass filter across the controller output terminals. The primary and secondary low pass filters isolate the power controller and induction motor with respect to spurious noise and harmonics generated by local as well as remote sources, and also improve real power transfer efficiency from the power generating source to the induction motor by transforming the effective impedance of the power source and the induction motor load.

According to a first aspect, a secondary side of contactless power transmission apparatus includes: a holding member which is physically separated from a primary side; a magnetic layer; a shield layer for shielding electromagnetic noise; and a heat insulation layer. The secondary coil is a planar coil and supported by the holding member, and at least the magnetic layer is laminated on one side of the planar coil and unified with the planar coil. According to a second aspect, the secondary side of the apparatus includes a plurality of magnetic layers. Each permeability of the magnetic layers is different from each other, and each of the magnetic layers forms a magnetic path with the primary side.