Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Permanent magnet type three-phase AC rotary electric machine










Image Number 3 for United States Patent #6998750.

Several embodiments of permanent magnet type three-phase AC rotary electric machines wherein the phase current flow is formed by parallel circuits formed by a plurality of serial circuits each comprising one or a plurality of stator coils so that electromagnetic voltage or counter electromagnetic voltage generated across opposite ends of the plural serial circuits may be always almost the same. Thus, a circulating current does not flow in the parallel circuits, whereby the efficiency of the rotary electric machine can be improved. Also, since the line current circuit of each of the phases is constituted of a parallel circuit, the current flowing in each of the stator coils is small so that the diameter of the stator coil wire can be small. Thus, the winding of the coils can be improved. Also, the processing of the coil terminals is facilitated and the processed portions of the terminals can be made small, resulting in a compact rotary electric machine.








 
 
  Recently Added Patents
Positive electrode for secondary battery, and secondary battery
Transparent conductive structure
Lamination sheet
Nonvolatile semiconductor storage device having conductive and insulative charge storage films
Digital photographing apparatus, method of controlling the same, and recording medium for the method
Method and system for testing indirect bandgap semiconductor devices using luminescence imaging
Optimized control of an energy supplying system and an energy consuming system
  Randomly Featured Patents
Luer
Color developable composition
Coalescing raid commands accessing contiguous data in write-through mode
Pendent lamp
Suction accumulator with oil reservoir
Encapsulated dead blow hammer with improved skeleton
Cooking apparatus employing a purging device
Image-taking apparatus, and camera and camera system incorporating it
Image forming apparatus which reduces or eliminates density irregularity due to thermal deformation of a developing sleeve
Providing parallel generic web site supporting anonymous or semi-anonymous internet activity