Patent ID: 8957547
Filing Date: 2015-02-17
Classification: H02J,Y02B,Y02E

Abstract:
1. An uninterruptible power supply (UPS) applicable to a power supply unit (PSU) of an electronic device, the UPS comprising: an alternating current (AC) power interface connected to an AC power source; a rectifier converting an AC voltage received from the AC power interface to a rectified direct current (DC) voltage; a solar energy module receiving solar energy and converting the solar energy to a first DC voltage; a controller comparing the first DC voltage with a preset voltage which is a peak voltage of the AC power source, and outputting a control signal; a boost converter controlled by the control signal, wherein when the first DC voltage is less than the preset voltage, the boost converter turns off; when the first DC voltage is greater than the preset voltage, the boost converter converts the first DC voltage to a second DC voltage; a buck converter converting the rectified DC voltage or the second DC voltage to a working DC voltage according to a voltage requirement of the PSU of the electronic device; and a power distribution unit connected to the buck converter to receive the working DC voltage and output to the PSU.