Resonant switched capacitor converter and power supply system

A power supply system, comprising:

• a power supply;
• and
• a resonant switched capacitor converter coupled to the power supply and comprising:
• a plurality of second capacitors coupled in series, wherein one resonant system corresponds to one second capacitor, and wherein each of the second capacitors comprises:
• a first end;
• and
• a second end;
• a first capacitor coupled in series to the second capacitors and comprising:
• a third end;
• and
• a fourth end;
• and
• a plurality of resonant systems corresponding to the second capacitors, wherein each of the resonant systems comprises:
• a resonant circuit;
• a first switch system comprising:
• a first connection end coupled to the first end;
• a second connection end coupled to the third end;
• and
• a third connection end;
• and
• a second switch system comprising:
• a fourth connection end coupled to the second end;
• a fifth connection end coupled to the fourth end;
• and
• a sixth connection end coupled to the third connection end through the resonant circuit;
• and
• a control system coupled to the resonant systems and configured to:
• control, based on a target output voltage gain, switches in each first switch system and each second switch system to be turned on or turned off to enable the converter to obtain an output voltage gain equal to the target output voltage gain;
• generate a drive signal for each switch in each resonant system based on the target output voltage gain;
• and
• control, based on at least one different target output voltage gain, switches the resonant systems to be turned on or turned off to cause the converter to obtain an output voltage gain equal to the at least one different target output voltage gain.

A power supply system, comprising:

• a power supply comprising at least one photovoltaic array and at least one energy storage unit;
• and
• a resonant switched capacitor converter coupled to the power supply and comprising:
• a plurality of second capacitors coupled in series, wherein one resonant system corresponds to one second capacitor, and wherein each of the second capacitors comprises:
• a first end;
• and
• a second end;
• a first capacitor coupled in series to the second capacitors and comprising:
• a third end;
• and
• a fourth end;
• and
• a plurality of resonant systems corresponding to the second capacitors, wherein each of the resonant systems comprises:
• a resonant circuit;
• a first switch system comprising:
• a first connection end coupled to the first end;
• a second connection end coupled to the third end;
• and
• a third connection end;
• and
• a second switch system comprising:
• a fourth connection end coupled to the second end;
• a fifth connection end coupled to the fourth end;
• and
• a sixth connection end coupled to the third connection end through the resonant circuit;
• and
• a control system coupled to the resonant systems and configured to:
• control, based on a target output voltage gain, switches in each first switch system and each second switch system to be turned on or turned off to enable the converter to obtain an output voltage gain equal to the target output voltage gain;
• generate a drive signal for each switch in each resonant system based on the target output voltage gain;
• and
• control, based on at least one different target output voltage gain, switches the resonant systems to be turned on or turned off to enable the converter to obtain an output voltage gain equal to the at least one different target output voltage gain.