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
Real-time pricing of shipping vendors
Methods and systems for improved engine speed control during engine starting
Buffer pool extension for database server
Semiconductor fin device and method for forming the same using high tilt angle implant
Method and system for triggering message waiting indicator delivery
Promoting content
Systems, devices, methods, and compositions including fluidized x-ray shielding compositions
  Randomly Featured Patents
Continuous preparatin of tertiary aliphatic methyl amines
Noncontacting portable infrared intra-ocular pressure sensor
Saddle rigging
Intelligent vehicular speed control system
Hydrogenation catalysts for the preparation of propanediols and processes for the preparation of propanediols, using such catalysts
Production of sodium diformate
Automatic performance control apparatus
Apparatus and method for centralized power management
Mass spectrometers
Storage cabinet with rotary trays