Patent ID: 9379603
Filing Date: 2016-06-28
CPC Classification: H02J,H02M,Y02B,Y02E

Claim Text:
1. An electrical supply apparatus, comprising: an input for connecting the electrical supply apparatus to a power supply system which provides an AC voltage as input voltage, an output for connecting the electrical supply apparatus to a load, wherein the output provides a DC voltage as output voltage, a rectifier, which rectifies the input voltage into a rectified input voltage, a PFC module comprising: a smoothing device for smoothing the rectified input voltage; and an active power factor correction device, wherein the power factor correction device is configured to shape, depending on a time-dependent current waveform signal, a time-dependent supply current for the smoothing device in such a way that a time-dependent input current into the PFC module is matched to the current waveform signal, a control module, which generates the current waveform signal for the PFC module, wherein the control module generates the curve shape of the current waveform signal during the operation of the electrical supply apparatus independently of the input voltage and temporally synchronizes the current waveform signal with the input voltage or a derivative of the input voltage, a phase shifter device for enabling a phase shift of the current waveform signal, wherein a current waveform pattern half-cycle of the current waveform signal is set to zero in at least one marginal region for at least the time duration that corresponds to the phase shift, and wherein when a phase shift occurs, the current waveform pattern half-cycle is set to zero in the at least one marginal region, such that the input current is set to zero for the time period between the zero crossing of the input voltage and the zero crossing of an unchanged current waveform signal.