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This paper presents an improved variable-band hysteresis current controller for a two-level three-phase voltage source inverter (VSI). The controller takes the average voltages of the phase-leg switched outputs as an approximation to the load back-EMF voltages, and uses these results to vary the hysteresis bands so as to maintain constant phase-leg switching frequencies. The switching frequency control...
Robust grid synchronisation of power electronic converters is essential for their use with Distributed Generation Systems. A considerable number of techniques have been proposed to address this issue, but often their performance is not fully validated using a consistent experimental setup. Furthermore, even when experimental validation is used, there is still a lack of rigour in many of the evaluative...
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