Systems and methods for providing direct current and alternating current from a power supply to a load

An Uninterruptible Power Supply (UPS), the UPS comprising:

• an input configured to receive input AC power;
• a DC output configured to provide output DC power to a load;
• an AC output configured to provide output AC power to the load;
• a charger coupled to the input and configured to convert the input AC power into DC power;
• a DC bus coupled to the charger and configured to receive the DC power;
• a bypass line coupled between the input and the AC output and configured to provide the input AC power to the AC output as the AC output power;
• and
• a controller coupled to the charger and configured to:
• monitor a current demand at the AC output relative to a demand threshold;
• operate, in response to a determination that the current demand at the AC output is above the demand threshold, the UPS in a first mode of operation by enabling the charger to provide DC power to the DC bus;
• and
• operate, in response to a determination that the current demand at the AC output is below the demand threshold, the UPS in a second mode of operation by disabling the charger.

A non-transitory computer-readable medium storing thereon sequences of computer-executable instructions for operating an Uninterruptible Power Supply (UPS), the sequences of computer-executable instructions including instructions that instruct at least one processor to control the UPS to:

• receive input AC power at an input from an input power source;
• provide, via a DC output, output DC power to a load;
• provide, via an AC output, output AC power to the load;
• monitor a current demand at the DC output relative to a demand threshold;
• operate, in response to a determination that the current demand at the DC output is below the demand threshold, the UPS in a first mode of operation by enabling a charger coupled to the input to convert the input AC power into DC power;
• and
• operate, in response to a determination that the current demand at the DC output is above the demand threshold, the UPS in a second mode of operation by disabling the charger.