Charge controllers, who needs them? Optimizing MPPT for Energy Harvesting Applications

In the world of energy harvesting, many sources, such as solar, TEG, and piezoelectric devices, are commercially available over a wide range of different power levels, from microwatts to kilowatts. Each requires some output impedance control to maximize the power collected. If you are designing a system, you might wonder, how do I connect a harvester to my device? In many, but not all, cases, you will need a charge controller. This talk will cover different charge controller types, from pulse-width modulation (PWM) to maximum power point tracking (MPPT) to direct charging, and how they work. The talk will also highlight differences between types of charge controllers that fall under the MPPT name. Finally, selection criteria will be presented to help you choose the ideal charge controller for your application.
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