Power Harvesting System for Battery Operated Appliances

A system for powering a lawn mower with harvested energy sources, the system comprising:

• a bank of batteries;
• a motor driven by said bank of batteries and imparting rotational energy to a shaft;
• a multi-phase generator driven by said rotating shaft and producing generator voltage signals with respectively untimed phase responses;
• a generator rectification circuit combining said generator voltage signals into a combined DC voltage generator output;
• a solar cell panel producing solar voltage signals;
• a solar rectification circuit creating a solar DC voltage signal;
• an inverter receiving said generator voltage signals and said solar DC voltage signal and producing an AC voltage output;
• a battery charger connected to said inverter and receiving said AC voltage output for charging said battery.

A lawn mower having reduced forces of friction therein and utilizing momentum in a rotating blade to cut grass with power from harvested sources within the lawn mower, the lawn mower comprising:

• a bank of batteries;
• a first brushless DC electric motor driven by said bank of batteries and imparting rotational energy to a first shaft;
• a multi-phase generator driven by said first shaft and producing generator voltage signals;
• winding leads from said generator terminating as multi-phase voltage sources;
• a generator rectification circuit connected directly to said winding leads, receiving untimed multi-phase voltage sources and combining said generator voltage signals into a combined DC voltage generator output;
• an inverter receiving said generator voltage signals and producing an AC voltage output;
• a battery charger connected to said inverter and receiving said AC voltage output for charging said battery;
• and
• a blade comprising an interior portion connected to a second shaft driven by said motor and a gull wing portion connected to said interior portion, wherein said inner portion lies in a plane between said motor and said gull wing portion, and said gull wing portion engages grass for cutting.