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Z source inverter is a promising substitute of traditional VSI or CSI in application of motor drives. Maximum Boost Control is a classic method used with SPWM to control Z source inverter and it is proved to be more suitable to combine the Maximum Boost Control with SVPWM strategy in motor drive application. However, the peak dc-link voltage fluctuation appears when the SVPWM based Maximum Boost Control...
This paper investigates the prediction of the second order dc voltage ripple in a modular multilevel converter (MMC) based point-to-point high-voltage direct-current (HVDC) system when the rectifier station suffers a single-line-to-ground (SLG) fault. Under this unbalanced condition, the second order dc voltage ripple will transfer to the healthy inverter station and can lead to a potential output...
A novel maximum power point tracking (MPPT) strategy is presented in the paper. When wind speed varies, the wind turbine could obtain a big torque difference by adopting the novel strategy to achieve the aim of tracking the optimum turbine speed fleetly. The square wave permanent magnet synchronous generator (PMSG) is adopted in this paper for considering the characteristic of the diode rectifier-Boost...
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