Digital current equalizing device, analog current equalizing device, current equalizing method and system

摘要

Provided are a digital current equalizing device, an analog current equalizing device, a current equalizing method and a system. The digital current equalizing device comprises: an output current sampling amplifying module (102), a digital processing module (104), and a main power frequency conversion module (106). An input terminal of the output current sampling amplifying module (102) connects to an output loop of a power supply, and an output terminal of the output current sampling amplifying module (102) connects to a current equalizing bus through a resistor R0, wherein the digital processing module (104) is configured to adjust an output voltage reference signal Vr according to a difference between an output voltage signal V2 of the output current sampling amplifying module (102) and an voltage signal Vbus of the current equalizing bus, and the main power frequency conversion module (106) is controlled to adjust the voltage according to the adjusted output voltage reference signal Vr′. The technical solution is easy to implement and can improve the reliabilities of each power supply module and the whole power supply system.

主权项

1. A digital current equalizer, comprising an output-current sampling-and-amplifying module, a digital processing module, and a primary power converting module, an input terminal of the output-current sampling-and-amplifying module being connected to an output loop of a power supply, and an output terminal of the output-current sampling-and-amplifying module being connected, via a resistor R0, to a current equalizing bus, wherein
the digital processing module is configured for: adjusting, according to a difference between an output voltage signal V2 of the output-current sampling-and-amplifying module and a voltage signal Vbus of the current equalizing bus, an output voltage reference signal Vr; and controlling, according to the adjusted output voltage reference signal Vr′, the primary power converting module to perform voltage adjustment, wherein the digital current equalizer further comprises a current equalization controlling module, a first input terminal of the current equalization controlling module being connected to the output voltage signal V2 of the output-current sampling-and-amplifying module, a second input terminal of the current equalization controlling module being connected to the voltage signal Vbus of the current equalizing bus, and an output terminal of the current equalization controlling module being connected to the digital processing module, wherein the current equalization controlling module is configured for outputting a voltage signal V3 representing the difference between the output voltage signal V2 of the output-current sampling-and-amplifying module and the voltage signal Vbus of the current equalizing bus; and the digital processing module is configured for: adjusting, according to the voltage signal V3, the output voltage reference signal Vr; and controlling, according to the adjusted output voltage reference signal Vr′, the primary power converting module to perform voltage adjustment, wherein the digital current equalizer further comprises a digital processing peripheral module and an output voltage feedback module, the output of the output voltage feedback module and the output of the current equalization controlling module being connected, via the digital processing peripheral module, to the digital processing module, wherein the output voltage feedback module is configured for obtaining, according to an actual output voltage V0 of the power supply, an output voltage feedback signal Vf; the digital processing peripheral module is configured for converting the voltage signal V3 and the output voltage feedback signal Vf output by the output voltage feedback module respectively to signals V3′ and Vf′ prepared for an analog to digital conversion and sampling operation by the digital processing module; and the digital processing module is configured for: adjusting, according to the signal V3′ obtained after converting the voltage signal V3 by the digital processing peripheral module, the output voltage reference signal Vr; and controlling, according to the signal Vf′ obtained after converting the output voltage feedback signal Vf by the digital processing peripheral module and the adjusted output voltage reference signal Vr′, the primary power converting module to perform voltage adjustment.