Power supply device

A power supply device comprising:

• a power supply control device comprising
• “m×n” switching elements (where “m” and “n” are integers of 2 or greater),
• “m×n” capacitors connected in series to corresponding ones of the switching elements and forming “m×n” series circuits,
• a charger to charge the capacitors,
• “m” transformers in which both ends of each primary winding are connected to both ends of a corresponding one of “m” parallel circuits that are formed by connecting “n” units of the series circuits in parallel to one another with the polarity aligned,
• a current detector to detect a current flowing through a multistage series circuit in which both ends of secondary windings of the “m” transformers are sequentially connected in series so that both ends of the circuit serve as output terminals, and to output the detected current as a detected current value,
• a controller to output a command signal generated on the basis of a current command and the detected current value, the current command being a target value of the current output from the output terminals, and
• drive circuitry to drive the switching elements and the charger on the basis of the command signal;
• operation result acquisition circuitry to acquire an output result of the power supply control device;
• state quantity observation circuitry to observe a state quantity of the power supply control device or an electrical load device connected to the power supply control device;
• learning circuitry to acquire an output from the operation result acquisition circuitry and an output from the state quantity observation circuitry, and learn the command signal in association with the state quantity and the output result;
• and
• decision-making circuitry to output the command signal with reference to a learning result learned by the learning circuitry.

A power supply device comprising:

• a power supply control device comprising
• “m×n” switching elements (where “m” and “n” are integers of 2 or greater),
• “m×n” capacitors connected in series to corresponding ones of the switching elements and forming “m×n” series circuits,
• a charger to charge the capacitors,
• “m” transformers in which both ends of each primary winding are connected to both ends of a corresponding one of “m” parallel circuits that are formed by connecting “n” units of the series circuits in parallel to one another with the polarity aligned,
• a current detector to detect a current flowing through a multistage series circuit in which both ends of secondary windings of the “m” transformers are sequentially connected in series so that both ends of the circuit serve as output terminals, and to output the detected current as a detected current value,
• a controller to output a command signal generated on the basis of a current command and the detected current value, the current command being a target value of the current output from the output terminals, and
• drive circuitry to drive the switching elements and the charger on the basis of the command signal;
• and
• learned learning circuitry to have performed learning by associating the command signal with a state quantity obtained by observing a state of the power supply control device or an electrical load device connected to the power supply control device, and an output result that is a result output by the power supply control device.