Procedure for regulating the d.c. voltage of a rectifier

Details Procedure for regulating the d.c. voltage of a rectifier Procedure for regulating the d.c. voltage of a rectifier

H - Electricity

02

M

H02M 1/084 (2006.01) H02M 7/219 (2006.01)

Patent

CA 2041753

Procedure for regulating the d.c. voltage of a pulse-width modulated rectifier bridge controlled by self- commutated semiconductor components and provided with filtering coils, in which procedure the phase voltages of the supplying three-phase mains and the d.c. voltage of the rectifier are measured. The modulation references needed for the pulse-width modulation are produced using pure sine and cosine curves synchronized with the mains voltages, with spatial vectors formed from them or with components of such vectors, by means of a phase-locked loop. The regulation is effected in a coordinate system tied to the spatial vector of the mains voltages.

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