Alternative Approach to Small Scale Photovoltaic Solar Power and Energy Storage

Abstract

Photovoltaic solar panels remain one of the most commonly available avenues for acquiring renewable energy for small-scale end users but despite their promising potential their implementation continues to remain outside the realm of possibility for most. The combination of high upfront costs, long payback periods, and complex installation requirements results in a disincentive to purchase the technology and relies on significant appeals to morality as a driving force as opposed to purely economic incentives. An alternative implementation of photovoltaic arrays for small scale use combined with grid power supplement is herein proposed that better matches energy consumption profiles in the household and seeks to reduce cost and complexity. The system comprises a hydronic thermal storage system acting as hot water supply, furnace, and air conditioning for power regulation and distribution in combination with electrical distribution to home appliances using minor modification to the power supply. Currently used batteries, charge controllers, and inverters are eliminated and replaced with a single specialized outdoor central air-conditioning condenser unit that distributes electrical and thermal energy but would not supply electricity onto the grid. Examination of minor electronic modifications on common switched mode power supply topologies has found that regulation of a wide range of variable voltage solar electricity input is currently possible and does not cause overheat or other harm to the power supply. The proposal provides a workable solution to alleviate financial and technical burden on the individual and promotes the vision of a 100% renewable energy society while working within economic constraints.