Motoyasu Mochizuki

Noise Lowering for a Large Variable Speed Range Use Permanent Magnet Motor by Frequence Shift and Structural Response Evaluation of Electromagnetic Forces

According to electrical output up rating of a permanent magnet motor and request to operate for a large variable speed range, resonance between structural natural vibration and electromagnetic force inside the motor can take place and make noise. This paper describes the mechanism of a resonance between them and noise lowering procedure by frequency shift when they are applied to the reluctance torque largely employed new motor named Permanent magnet Reluctance Motor (PRM).

AISIN AW New Full Hybrid Transmission for FWD Vehicles

AISIN AW has developed a new full hybrid transmission, the HD-10 for front wheel drive vehicles. This HD-10 has been developed based on the concept for improving fuel economy and performance without sacrificing drivability and utility. To achieve this, the transmission adopts an integrated design, which consists of two electric motors, gears including a planetary gear set, two inverters, and an electronic control unit. In addition, new software has been developed to offer smooth operation in every drive condition.

Noise lowering for a large variable speed range use permanent magnet motor by frequence shift of electromagnetic forces causing structural resonance

According to electrical output up rating of a permanent magnet motor and request to operate for a large variable speed range, resonance between structural natural vibration and electromagnetic force inside the motor can take place and make noise. This paper describes the mechanism of a resonance between them and noise lowering procedure by frequency shift when they are applied to the reluctance torque largely employed new motor named Permanent magnet Reluctance Motor (PRM).

APPLICATION OF 6.5% SILICON STEEL SHEET TO INDUCTION MOTOR AND ITS MAGNETIC PROPERTIES

ABSTRACT The practical application of recently developed standpoints 6.5% Si steel sheets in electrical machines is discussed from two standpoints. One is application in high-speed induction motors and the other is inverter-fed induction motors. The latter had good results in reducing noise and economy, and a practical iron core was developed.