This paper presents the expansion of power quality for variable speed Wind Power System (WPS) using Permanent Magnet Synchronous Generator (PMSG) and Trans Z-Source Inverter. The PMSG is having compact collection and dimensions, compare to Induction Generator. Induction Generator needs the grid power, then only start the power production. But without take up the grid power PMSG should produce t...

The maximum boost control method for a single-phase switched-boost inverter (SBI) and single-phase Z-source inverter (ZSI) is proposed in this paper. In the proposed method, the low frequency voltage is added to the constant voltage for generating the variable shoot-through time intervals. For improving the AC output quality of the inverter, an active power switch is used to replace one of the ...

This study presents the different control techniques of Z-Source inverter (ZSI) and compares them for same modulation index. Different from traditional inverters, in ZSI circuit configurations simple boost, maximum constant boost can be utilized to perform DC-AC voltage conversion with shoot-through states. The operation principles are explained detail. duty ratio, factor, gain each technique c...

Multiphase machines are becoming one of the mainstream research topics during last decade, especially in high-reliability based systems. Among different configurations multiphase machines, Asymmetrical Six-Phase Induction Motor (ASPIM) with a spatial displacement 30° is popular as it has better magnetomotive force (MMF) distribution. This paper therefore concerns detecting and mitigating operat...


 Drought is a natural disaster due to less precipitation than the normal that can occur irrespective of climate regimes. Impact assessment drought and monitoring are most important mitigation stratregies combat effects. As single index cannot assess all conditions, in present study multi-variate indices approach has been used monitor drought. Five were assessed using data such as deciles ...