In　order　to　research　the　influence　of　leakage　flux　in　high　hydrostatic　pressure　vessel,we　have　measured　the　magnetization　curve　under　five　different　ambient　conditions,then　compared　the　BH　curve　measured　on　table　far　from　iron　with　BH　curve　measured　in　situ　in　pressure　vessel.

In this paper the on-line analysis of leakage flux will be presented as an alternative and efficient procedure fo.

By high capacity high-speed switch,the series reactor is shorted during normal operation,eliminating the reactor leakage magnetic flux to eddy hot produced metal member around it.

In order to get accurate modeling of the electromagnetic force in the magnetic suspension system,the rationale of magnetic circuit is used to analyze the impact of the fringing effect of air gap,the magneto resistive effect of iron core and magnetic circuit magnetic flux leakage on electromagnetic force model.