Power converters are the typical switched systems which operate based on the alternate switching of the semiconductor switches. The operating mode of power converters consists of several operating stages in one switching period. Each operating stage refers to a sub-circuit or equivalent circuit wher...

Errors of mismatch and currents calibration caused by channel geometrical variety in switchedcurrent are investigated in this paper. The relation and computing of mismatch and sensitivity are discussed also, and then a measure method of switched current mismatch using wavelet decomposition is propos...

Reliable sampled value (SV) synchronization is used to ensure the reliability of protective relaying in a smart substation based on IEC 61850. In this paper, an SV synchronization method based on SV propagation delay measurement and compensation is proposed. The method does not depend on an external...

Multilevel voltage source converters(MLVSCs) have been widely applied in the medium voltage drive(MVD) industry. The performance of a MVD system is strongly dependent on the utilized topology. As of today, many interesting topologies have been proposed and evaluated in literature. In addition to pro...

The basic scheme of the orientation detection system using L-shape reticle is introduced. The dimension of the patterns on the reticle of the system in practical applications is designed and an analysis of the principle of abstracting the orientation information of the target and the effects and for...