Inverter-fed three-pole AMB was studied.

In three-phase circuit, installing the single-pole switch one by one closely,the instantaneous voltage between contacts is different from that of three-pole switch, but the related revised test method in Chinese National Standard (GB) is not issued up to now, in this paper, a proposal verification based on related revised IEC standard was presented, and its testing method was given.

Inspired by bearingless motor and the novel construction research on active magnetic bearing (AMB), this thesis does some research on the inverter-fed three-pole active magnetic bearing.

The three winds of YongWind,Bei Wind and Wei wind in the Book of Songs which reflect in social problems can be said to be very similar,not only because of their geographical location relations,but also their economic and political issues.

This paper adopts GARCH model with GED distribution to estimate the conditional VaR in both upside and downside directions at the confidence level of 90% and 95%,and then utilizes the Granger causality in risk to uncover the extreme risk spillover effect between WTI and Daqing oil markets,the daily data of oil price in two markets ranging from May 2000 to May 2005.