The development of electronic power components has allowed the increase induction machine performance. Indeed, monitoring squirrel cage motors driven through rectifiers and inverters been a major concern. This paper presents new method to diagnose combination inverter-machine faults. technic considers an auxiliary winding which is small coil inserted between two stator phases. It based on Lissa...

A common problem in wind power plants involves fixed-speed wind turbines. In fact, being equipped with a squirrel-cage induction generator (SCIG), they tend to drain a relevant amount of reactive power from the grid, potentially causing voltage drops and possible voltage instability. To improve SCIG power quality and transient stability, this paper investigates a new control strategy for pitch ...

HE AIM OF WIND TURBINE SYSTEMS DEVELOPMENT is to continuously increase output power. A few years ago, the rated output power of production-type units reached 200 kW. By 1999, the average output power of new installations climbed to 600 kW. The largest series production units today are specified to deliver 1.5-MW output power (Table 1). It is anticipated that in the near future, power rating of ...