Search results for: “charge charger charging”
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Electric vehicle charging: what challenges?
We review fifty patents from leading companies in EV charging. Complex algorithms will be required to ensure grid stability. Vehicle-manufacturers are concerned about balancing convenience and costs. While interestingly, “fast charging” does not appear to be a primary focus.
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Electric vehicle charging: the economics?
This data-file models the economics of electric vehicle chargers, by disaggregating the costs of different charger types. Economics are most favorable where they lead to incremental retail purchases and for faster chargers. Economics are least favorable around apartments, charging at work and for slower charging speeds.
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Pumped hydro: generation profile?
Pumped hydro facilities can provide long-duration storage, but the utilization rate is low, and thus the costs are high, according to today’s case study within the Snowy hydro complex in Australia. Tumut-3 can store energy for weeks-months, then generate 1.8 GW for 40+ hours, but it is only charging/dischaging at 12% of its nameplate capacity.
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EV fast charging: opening the electric floodgates?
This 14-page note explains the crucial power-electronics in an electric vehicle fast-charging station, running at 150-350kW. Most important are power-MOSFETs, comprising c5-10% of charger costs. The market trebles by the late 2020s.
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ChargePoint: electric vehicle charging edge?
ChargePoint is the leading provider of Level 2 EV charging stations in the US and aims to help electrify mobility and freignt. Our review finds a library of simple, clear, specific and easy-to-understand patents. More debatable are the technology edge and future IP defensability.
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Electrochemistry: battery voltage and the Nernst Equation?
What determines the Voltage of an electrochemical cell, such as a lithium ion battery, redox flow battery, a hydrogen fuel cell, an electrolyser or an electrowinning plant? This note explains electrochemical voltages, from first principles, starting with Standard Potentials and the Nernst Equation.
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Battery degradation: what causes capacity fade?
Lithium ion battery degradation rates vary 2-20% per 1,000 cycles. And lithium ion batteries last from 500 – 20,000 cycles. We have aggregated 7M data-points from laboratory tests, in order to quantify what drives battery degradation. LFP chemistry, low C-rates, stable temperatures and limited cycling all help.
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Fast-charge the electric vehicles with gas?
There is upside for natural gas, as EV penetration rises: we model that gas turbines can economically power fast-chargers for 13c/kWh. Carbon emissions are lowered by c70% compared with oil. And the grid is spared from power demand surges. Download our data-file to stress-test the sensitivities.
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Turbo-charge gas turbines: the economics?
This data-file models the economics of turbo-charging gas turbines, which increases the mass flow of combustion air, to improve their power ratings by c10-20%. IRRs are solid. Turbo-charged gas turbines could thus gain greater share as grids become saturated with renewables
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Grid-scale battery operation: a case study?
Grid-scale batteries are not simply operated to store up excess renewables and move them to non-windy and non-sunny moments, in order to increase reneawble penetration rates. Their key practical rationale is providing short-term grid stability to increasingly volatile grids that need ‘synthetic inertia’. Their key economic rationale is arbitrage. Numbers are borne out by our…
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