A computer implemented method for controlling a power plant system comprising a photovoltaic power source, an inverter, a DC-to-DC converter, an energy storage and an energy storage manager, the method comprising: receiving target value for AC power to be supplied by the inverter; receiving weather forecast information, energy storage status information and photovoltaic power source parameters; generating forecasted energy flow information for the photovoltaic power source based on the weather information and the photovoltaic power source parameters; comparing the forecasted energy flow information and the energy storage status information; and adjusting the target value for the AC power based on the comparison.

A DC power supply and distribution system is obtained that improves power distribution efficiency at a low-load factor while suppressing overall upsizing. The DC power supply and distribution system includes a main AC/DC converter and an auxiliary AC/DC converter connected in parallel to the main AC/DC converter and having a rated power capacity smaller than that of the main AC/DC converter, wherein when the absolute value of the DC output power is smaller than the absolute value of a threshold power set smaller than the rated power capacity of the auxiliary AC/DC converter, a first switching command for switching from the first operation mode to the second operation mode is generated for a power conversion unit.

A DC power supply and distribution system is obtained that improves power distribution efficiency at a low-load factor while suppressing overall upsizing. The DC power supply and distribution system includes a main AC/DC converter and an auxiliary AC/DC converter connected in parallel to the main AC/DC converter and having a rated power capacity smaller than that of the main AC/DC converter, wherein when the absolute value of the DC output power is smaller than the absolute value of a threshold power set smaller than the rated power capacity of the auxiliary AC/DC converter, a first switching command for switching from the first operation mode to the second operation mode is generated for a power conversion unit.

A DC-DC converter includes a first switching element, a second switching element, a first amplifier, a second amplifier, a Pulse Width Modulation (PWM) controller, an output inductor and a power compensator. The second switching element is connected to the first switching element. The first amplifier outputs a first switching control signal to control the first switching element. The second amplifier outputs a second switching control signal to control the second switching element. The PWM controller generates a control signal applied to input terminals of the first amplifier and the second amplifier. The output inductor includes a first terminal connected to the first switching element and the second switching element and a second terminal outputting the pixel power supply voltage. The power compensator receives an input voltage and adjusts a power supply voltage applied to a power supply terminal of the first amplifier.

A DC-DC converter includes a first switching element, a second switching element, a first amplifier, a second amplifier, a Pulse Width Modulation (PWM) controller, an output inductor and a power compensator. The second switching element is connected to the first switching element. The first amplifier outputs a first switching control signal to control the first switching element. The second amplifier outputs a second switching control signal to control the second switching element. The PWM controller generates a control signal applied to input terminals of the first amplifier and the second amplifier. The output inductor includes a first terminal connected to the first switching element and the second switching element and a second terminal outputting the pixel power supply voltage. The power compensator receives an input voltage and adjusts a power supply voltage applied to a power supply terminal of the first amplifier.

A computer implemented method for controlling a power plant system comprising a photovoltaic power source, an inverter, a DC-to-DC converter, an energy storage and an energy storage manager, the method comprising: receiving target value for AC power to be supplied by the inverter; receiving weather forecast information, energy storage status information and photovoltaic power source parameters; generating forecasted energy flow information for the photovoltaic power source based on the weather information and the photovoltaic power source parameters; comparing the forecasted energy flow information and the energy storage status information; and adjusting the target value for the AC power based on the comparison.

A computer implemented method for controlling a power plant system comprising a photovoltaic power source, an inverter, a DC-to-DC converter, an energy storage and an energy storage manager, the method comprising: receiving target value for AC power to be supplied by the inverter; receiving weather forecast information, energy storage status information and photovoltaic power source parameters; generating forecasted energy flow information for the photovoltaic power source based on the weather information and the photovoltaic power source parameters; comparing the forecasted energy flow information and the energy storage status information; and adjusting the target value for the AC power based on the comparison.

A system power supply including an input power supply, a working power supply unit, a plurality of control modules, and a wiring harness is provided. The wiring harness includes a working power supply line and an input power supply line. An input power supply port of each control module is connected to the input power supply line, and a working power supply port is connected to the working power supply line. The input power supply is connected to the input power supply line, and an output of the working power supply unit is connected to the working power supply line. The present invention uses a working power supply line to provide working power supply to a plurality of control modules, eliminating the traditional operation of configuring an independent working power supply for each control module.

A system power supply including an input power supply, a working power supply unit, a plurality of control modules, and a wiring harness is provided. The wiring harness includes a working power supply line and an input power supply line. An input power supply port of each control module is connected to the input power supply line, and a working power supply port is connected to the working power supply line. The input power supply is connected to the input power supply line, and an output of the working power supply unit is connected to the working power supply line. The present invention uses a working power supply line to provide working power supply to a plurality of control modules, eliminating the traditional operation of configuring an independent working power supply for each control module.

The absorption circuit of the present invention is applied in a feed circuit, wherein the absorption circuit comprises a comparison unit and a regulation unit, and the comparison unit is employed to receive a voltage of a transformer primary dotted terminal of the feed circuit, and to compare the voltage with a first preset voltage and a second preset voltage and to output a comparison result, and the regulation unit is employed to regulate a resistor and a capacitor coupled to the transformer according to the comparison result, wherein the first preset voltage is larger than the second preset voltage. Therefore, the present invention can control the resistor and the capacitor coupled to the transformer according to the leakage inductance (i.e. the voltage) of the transformer, and then to adaptively restrain the corresponding voltage peak and EMI.