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Second-Life EV Battery EIS: Nyquist Fit and Grading
Fit measured impedance with a Randles–CPE–Warburg model. Inspect Nyquist and Bode plots, compare health indicators, and set transparent second-life battery grades.
Battery AC Self-Heating at −30 °C: Plating-Limited Warmup
Find AC frequency, allowable current and time to warm a frozen lithium-ion cell. Includes charge transfer, diffusion, anode polarization limits and heat loss.
Vanadium Flow Battery: Pumping and Shunt Current Loss Optimiser
Optimise VRFB flow and manifold diameters with a coupled shunt-current circuit, pressure losses and velocity-dependent electrode mass transfer. Compare pumping loss and instantaneous system efficiency.
BESS Container Deflagration: Explosion Vent Area Estimate
Estimate BESS container explosion vent area from measured battery gas properties, enclosure geometry and panel inertia. Compare reduced pressure with enclosure resistance.
Prismatic Cell Vent: Burst Pressure and Notch Thickness
Size a laser-scored vent foil with the Hencky membrane solution. Predict burst pressure and scatter, then check opened-vent gas capacity and cell pressure during an abuse pulse.
Supercapacitor–Battery Hybrid Sizing for Cranes and Rail
Size supercapacitor strings, battery buffer and bidirectional DC/DC converters from a repeating crane or rail power profile, including ESR losses and battery C-rate relief.
Battery Pack Cell Imbalance, 2RC Models and SoC Balancing
Simulate cell-to-cell SoC drift, parallel current sharing and weakest-cell cutoffs with a 2RC model for every cell. Size passive balancing and compare its effect over repeated cycles.
BESS Ageing Calculator: FCR, Peak Shaving and SEI Fade
Predict BESS capacity loss, resistance growth and end of life from frequency response and peak shaving using published NMC/LFP ageing models and rainflow counting.
Solid-State Battery Stack Pressure, Swelling and Ceramic Fracture
Size clamping preload and spring compliance through charge–discharge swelling and lithium creep. Check pressure limits, spring travel and ceramic electrolyte fracture probability.
Immersion Battery Cooling: Flow, Pressure Drop and Cell Spread
Solve U- or Z-manifold flow distribution, developing passage losses and cell temperatures. Check a 5 °C spread target and find the pump head and power.
BESS Thermal Runaway Cascade and Enclosure Vent Gas
Simulate cell-by-cell thermal runaway propagation and hot vent-gas heating. Track enclosure gas buildup, exhaust dilution, and the 25% LFL threshold.
Fast Charging Without Lithium Plating: SPMe Safe C-Rate
Find the LG M50 charging rate that keeps the anode above lithium-plating onset. Solve the full SPMe and compare constant current with a four-step charging profile.
EV Regenerative Braking and Brake Force Distribution
Compare front/rear brake force distribution and series or parallel regen blending. Check axle adhesion, motor and battery limits, and recovered energy over a complete stop.
ANPC Inverter Loss Balancing and Device Temperatures
Compare ANPC zero-state commutations, balance six-switch leg losses, and track transistor and diode junction temperatures through a low-frequency heavy launch.
Magnet Eddy Current Loss and Rotor Magnet Segmentation
Solve 2D magnetic diffusion for slot and PWM harmonics. Compare circumferential and axial magnet segmentation, find the fewest pieces meeting a loss target, and estimate magnet temperature.
SiC Inverter Losses and Drive-Cycle Junction Temperature
Calculate SiC MOSFET conduction, switching and dead-time losses over EPA UDDS, launch or locked-rotor stall. Track all six junction temperatures, peak temperature and thermal swing.
Planar Transformer: Dowell AC Resistance and iGSE Core Loss
Compare interleaved and grouped PCB windings using layer MMF and Dowell resistance. Calculate harmonic copper loss, leakage inductance, and iGSE core and total loss.
IPMSM MTPA, Field Weakening and MTPV Current Trajectory
Find id and iq references from Ld, Lq, magnet flux and inverter limits. Explore MTPA, field weakening, MTPV and the torque–speed and power–speed envelopes.
Flying Capacitor Inverter Sizing and Natural Balancing — 800 V
Size the flying capacitor of a three-level inverter, predict natural balancing from switching harmonics and load impedance, and animate phase-shifted PWM.
Humanoid Reaction Wheel and CMG Balance Sizing
Size a humanoid reaction wheel or scissored CMG pair for push and post-slip recovery. Compare angular momentum, rotor size, speed, torque and gimbal saturation with nonlinear recovery dynamics.
Tendon Capstan Friction, Tension Loss and Cable Stretch
Calculate tension loss and cable stretch through ordered guides and Bowden sheaths. Resolve frictional hysteresis, reversal lost motion, and directional output stiffness.
Hexapod CPG Gait Generator: Tripod, Ripple and Wave
Simulate six coupled Hopf oscillators, blend tripod–ripple–wave gaits, and animate reachable three-joint leg commands. Inspect phase tracking, footfall timing and joint speed.
Robot Gripper Force: Friction Cone, Twist and Acceleration
Size a two- or multi-finger robot grasp against sliding and twisting. Include arm acceleration, an offset centre of mass and coupled soft-finger friction.
Biped Walking: Compass Gait, Five-Link Walker and Poincaré Stability
Find periodic walking gaits, Poincaré multipliers and disturbance margins for a passive compass gait or a full five-link HZD walker. Animate each hybrid step.
