부산대학교 도서관

A high voltage system is required for the increasing electrical load of hybrid and electrical vehicles. The electrical load includes the electrical compressor, the electrical heater, the electrical power steering, the electrical pump, ISG, and other systems. The electrical system of the PWM in use generates a lot of high frequency switching noise, which causes unexpected behavior in the electrical system. This paper provides a solution for the actual angle estimation from the Magnetic Resistance (MR) sensor or Sensor bearing. The method also provides robust results in the noise environment; it is used by the Angle Tracking Observer and was confirmed by real motor control tests using WRSM vector control.