A power control method comprises: obtaining voltage information of each input circuit; generating a first control signal based on the voltage information and a bus voltage value; converting a voltage of each input circuit into a bus voltage based on the first control signal; obtaining load information; generating a second control signal based on the load information and the bus voltage value; converting the bus voltage into a load voltage based on the second control signal; and outputting the load voltage.

A power supply control apparatus includes: a first system configured to supply electric power of a first power supply to a first load; a second system configured to supply electric power of a second power supply to a second load; an inter-system switch capable of connecting the first system to the second system and disconnecting the first system from the second system; a battery switch capable of connecting the second power supply to the second system and disconnecting the second power supply from the second system; a primary ground fault detection unit configured to cut off the inter-system switch and conduct the battery switch when a ground fault of the first system or the second system is detected by the primary ground fault detection unit; a secondary ground fault detection unit as defined herein; and a failure determination unit as defined herein.

The power supply device with multiple outputs includes two output ports, a power converting module with two power output ends, and two switching modules connected among the two power output ends and the two output ports. The output power from the two power output ends can be independently allocated to either one or two of the two second output ports. When one of the output ports requests for a demand power, the power supply device is able to determine which one or both of the power output ends to output power to the output port, reaching a better power allocation efficiency.

Disclosed herein is a solar generation facility capable of using high power by configuring packages each including a power pump and a solar module in multiple stages. The solar generation facility includes a plurality of solar module packages connected in series to one another and stacked in multiple layers and at least one condenser corresponding to the solar module packages. At least one of the solar module packages has a solar module that supplies power to a load stage and a power pump that provides lifting power to the solar module. Here, the solar module outputs the power by reflecting the lifting power provided from the power pump.

A DC power supply system includes: a DC bus serving as a bus bar for DC power supply; a natural energy power generator 30 that supplies generated power to the DC bus; a plurality of storage batteries that store the generated power from the natural energy power generator; a plurality of bidirectional DC-DC converters that connect the plurality of corresponding storage batteries to the DC bus; a power management apparatus that manages operations of the plurality of bidirectional DC-DC converters; and a target voltage corrector that calculates a correction value of a target value for the output voltage by using an average value of a plurality of actual measurement values of each output voltage of the bidirectional DC-DC converters. The power management apparatus individually controls the each output voltage of the bidirectional DC-DC converters by using each target value of the output voltages corrected based on the correction value.

This disclosure includes novel ways of implementing a power supply that powers a load. More specifically, a power supply includes a bidirectional power converter and a controller. The controller monitors a magnitude of an input voltage supplied from an input voltage source to a load. Based on a magnitude of the input voltage, the controller switches between a first mode of operating the bidirectional power converter to charge an energy storage resource using (a portion of power provided by) the input voltage and a second mode of producing a backup voltage from the energy storage resource to power the load as a substitute to the input voltage such as when the input voltage is below a threshold value.

A power system (150) operable to implement a power balancing control scheme is provided. In one aspect, a power system (150) includes multiple independent power supplies (182A, 182B) with independent batteries (172A, 172B) feeding onto a common power bus (180). The power supplies (182A, 182B) regulate the voltage on the common power bus (180) at the same time. The power balancing control scheme, when implemented, causes the load on the common power bus (180) to be shared among the individual power supplies (182A, 182B) with a specified load distribution. The specified load distribution can be set or determined to balance the State of Charge (SoC) of the batteries (172A, 172B) over time whilst taking into account the constraints or limits of the elements (172A, 172B, 182A, 182B) of the power system (150).

A distributed power harvesting system including multiple direct current (DC) power sources with respective DC outputs adapted for interconnection into a interconnected DC power source output. A converter includes input terminals adapted for coupling to the interconnected DC power source output. A circuit loop sets the voltage and current at the input terminals of the converter according to predetermined criteria. A power conversion portion converts the power received at the input terminals to an output power at the output terminals. A power supplier is coupled to the output terminals. The power supplier includes a control part for maintaining the input to the power supplier at a predetermined value. The control part maintains the input voltage and/or input current to the power supplier at a predetermined value.

An energy-saving paddlewheel aerator is provided. A power supply system of the paddlewheel aerator includes a switching power supply converting main power to direct current, the switching power supply being connected with two terminals of a power mechanism of the paddlewheel aerator and supplying power to the paddlewheel aerator; and a solar power supply module, two ends of the solar power supply module being connected in parallel with a large-capacity capacitor, and two ends of the large-capacity capacitor being connected with the two terminals of the power mechanism of the paddlewheel aerator respectively to supply power to the paddlewheel aerator. A rated output voltage of a solar panel with sufficient power is higher than an output voltage of the switching power supply, and the rated output voltage of the solar panel with insufficient power is lower than the output voltage of the switching power supply.

An energy-saving paddlewheel aerator is provided. A power supply system of the paddlewheel aerator includes a switching power supply converting main power to direct current, the switching power supply being connected with two terminals of a power mechanism of the paddlewheel aerator and supplying power to the paddlewheel aerator; and a solar power supply module, two ends of the solar power supply module being connected in parallel with a large-capacity capacitor, and two ends of the large-capacity capacitor being connected with the two terminals of the power mechanism of the paddlewheel aerator respectively to supply power to the paddlewheel aerator. A rated output voltage of a solar panel with sufficient power is higher than an output voltage of the switching power supply, and the rated output voltage of the solar panel with insufficient power is lower than the output voltage of the switching power supply.