Firstly,the characteristic curves involved Φ-I、B-H related to different DC biasing level are established by experiments on the transformer model,which reduced in scale to a linear dimentional ratio of approximately 1/50 relative to a 250MVA class transformer;Secondly,the effect on the curves due to biased magnetic flux are considered by simulation.

New permanent magnet biased radial magnetic bearing in magnetic suspending flywheel application;

A new hybrid-type permanent magnet biased magnetic bearing with rotor magnet;

Based on the configuration and operation principle of permanent magnet biased single degree of freedom hybrid magnetic bearing,the equation of attraction is deduced.

The former combines radial magnetic bearing with a motor magnetically to realize driving torque as well as two radial degree magnetic suspension, and the latter utilizes electromagnets together with a homopolar, permanent magnet bias topology to support the shaft in two radial degrees and one axial degree.

This paper pointed out that prestress and magnetic bias were important factors to impact the performances of actuators,according to the theory of magnetorstriction.

With the analyses of magnetic biases and internal magnetic field in magnetostrictive moment actuator,the strongpoint and the shortcoming of the giant,medium and small size moment actuators are studied,and as a result,a new kind of giant moment actuator was developed.

Influence of bias magnetic field on magnetoelectric effect of magnetostrictive/elastic/piezoelectric laminated composite;

The dependence of magnetostatic wave(MSW)modes and its bandwidth on the extermal DC bias magnetic fields in the magneto-optic film was illustrated.