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Currently, the modular multilevel converters (MMCs) based high voltage direct current (HVDC) transmission system have been widely applied due to its better characteristics, such as the stringent modular structure and good line-side behavior. This paper studies the conducted common mode electromagnetic interference (EMI) in MMC based HVDC system. As a matter of fact, interference sources are very complicated...
To make the carrier-borne electronic equipments working without interference to exert completely the efficiency of naval combat system, electromagnetic compatibility of the whole ship formation should be guaranteed. This paper describes the mathematical models that predict interference between warships assuming antenna-to-antenna coupling. The propagation loss for warship formation is analyzed detailedly...
Cosite coupling interference between transmitting and receiving antennas is one of the main electromagnetic interferences in modern warships, and it seriously affects the warship's EMC and battling performance. This paper analyses the principle of interference suppression using adaptive interference cancellation (AIC) technique, and describes an implementing scheme. At last, an experiment programme...
This paper presents efficient multiuser margin optimization algorithms suitable for multicarrier digital subscriber line (DSL) systems using Dynamic Spectrum Management (DSM). The favorable monotonicity and fairness properties of multiuser margin are employed to formulate a box-constrained nonlinear least squares (NLSQ) problem for multiuser margin maximization, which is efficiently solved by using...
In recent years there has been considerable interest in the development and applications of active filters. By a comparative study of active power filter and active EMI filter, the possibility of using active filter technique in the integrated power electronics modules (IPEM) has been analyzed in detail. An active EMI filter for IPEM is proposed in this paper, which consists of a wide bandwidth current...
Electromagnetic coupling disturbances have to be given enough attention in the design of hybrid integrated power electronic module (IPEM) due to the sharply decreased distance between power devices and the control/driving circuits comparing with conventional power electronic equipment built with discrete devices. The high di/dt or high frequency parasitic current ringing is one of important disturbance...
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