Single chip solution for solar-based systems

A power management system for managing the power from solar panels and rechargeable batteries to power a system that includes DC loads and AC loads, the power management system comprising:

• a first switch positioned to control power from the solar panels, to and from the rechargeable batteries, and from the rechargeable batteries to the DC loads and AC loads;
• a second switch positioned to control power from the solar panels to the DC loads;
• and
• a third switch positioned to control power from the solar panels to the AC loads,
• when in response to a power requirement from the system being equal to or less than a solar panel power provided by the solar panels, said first switch automatically set, by the power management system, to supply the system with only said solar panel power, and wherein any excess solar panel power not consumed by the system is at the same time automatically directed to recharge the rechargeable battery, and
• when in response to the DC loads having a higher priority than the AC loads, said second and third switches automatically set, by the power management system, to supply power only to the DC loads, and when in response to the AC loads having a higher priority than the DC loads, said second and third switch automatically set, by the power management system, to supply power only to the AC loads.

A power management system for managing the power from renewable power source and rechargeable batteries to power a system that includes DC loads and AC loads, the power management system comprising:

• a first switch positioned to control power from the renewable power source;
• a second switch positioned between the first switch and the rechargeable batteries to control power to and from the rechargeable batteries;
• a third switch positioned between the first and the DC loads to control power to the DC loads;
• and
• a fourth switch positioned between the first switch and the AC loads to control power to the AC loads,
• when in response to a power requirement from the system being equal to or less than a renewable power provided by the renewable power source, said first, second, third, and fourth switches automatically set, by the power management system, to supply the system with only said renewable power, and wherein any excess renewable power not consumed by the system is at the same time automatically directed to recharge the rechargeable battery, and
• when in response to a power requirement from the system being greater than a combined power from renewable power source and the rechargeable battery, said third and fourth switches automatically set, by the power management system, to reduce the power requirement from the system by turning power off to either the DC loads or the AC loads dependent upon whether the DC loads or the AC loads have a higher priority than the other.