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To suppress zero-sequence circulating current in parallel operating inverters with common DC power supply, this paper proposes a new strategy based on Dual-carrier SVPWM and proportional resonant (PR) control, which use two opposite active vectors instead of zero vectors to suppress the higher frequency circulating current and reduces the lower frequency circulating current by means of zero-sequence...
With increased wind power penetration level, new grid codes generally require the wind power system be able to stay connect during a grid voltage sag. Voltage sag generator (VSG) is a kind of device used to simulate the fault condition so as to verify the reliability and stability of wind power system during low voltage ride-through (LVRT). Firstly, two existing VSG topologies which are based on the...
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