MOSFETs: energy use and power loss calculator?
…or layers of MOSFETs and IGBTs (example below). Roughly, flowing power through 6 MOSFETs, each at c2% losses, explains why the EV fast-charging topology depicted below might have losses in…
Form Energy: long-duration battery breakthrough?
…fuel anode, which metallizes during charging (gain of electrons) and which oxidizes during discharging (loss of electrons). At the air-breathing cathode O2 gas ionizes into the solution during discharging (gain…
Energy storage: top conclusions into batteries?
…for daily charging-discharging (model here). Conversely, there are many loads in the power grid that can shift their demand (e.g., to the times when grids are over-saturated with renewables). This…
Renewable Energy Certificates?
…even if my electric vehicle is charging directly from the solar panel – even if I am holding the direct cable linking the two; even if I can see that…
Prevailing wind: new opportunities in grid volatility?
…hour-by-hour data from 2020. EV charging and smart energy systems screen as the best new opportunities. Gas-fired backups also remain crucial to ensure grid stability. The outlook for grid-scale batteries…
Electric vehicle: battery life?
…10,000 miles per year, at an effective fuel economy of 3 miles/kWh is going to endure around 1,500 battery charging-discharging cycles over a 15-year life. Commercial vehicles are going to…
Compressed air energy storage: costs and economics?
…generate a 10% IRR at a $1,350/kW CAES facility, with 63% round-trip efficiency, charging and discharging 365 days per year. As always, costs vary with WACCs, duration and the number…
Grid connection sizes: residential, commercial and industrial?
…may cause its circuit breaker to trip. Hence some homes may need upgraded grid connections to add electric vehicle chargers or heat pumps. Office buildings that have crossed our screens…
New energies: filter feeder?
…of new energies are non-linear, injecting distortion to power grids. Harmonic distortion caused by DC devices are discussed on pages 7-8, including the signatures of electric vehicle chargers, grid-scale batteries,…
Harmonic filters: leading companies?
…quality is increasingly important, as electricity demand grows, placing greater reliance on the power grids, which also increasingly feature non-linear loads such as variable frequeny drives, LEDs, EV chargers, data-centers,…