Method for leveling the power output of an electromechanical battery as a function of speed

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872199

Post, Richard F ^[1]

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1. Walnut Creek, CA

The invention is a method of leveling the power output of an electromechanical battery during its discharge, while at the same time maximizing its power output into a given load. The method employs the concept of series resonance, employing a capacitor the parameters of which are chosen optimally to achieve the desired near-flatness of power output over any chosen charged-discharged speed ratio. Capacitors are inserted in series with each phase of the windings to introduce capacitative reactances that act to compensate the inductive reactance of these windings. This compensating effect both increases the power that can be drawn from the generator before inductive voltage drops in the windings become dominant and acts to flatten the power output over a chosen speed range. The values of the capacitors are chosen so as to optimally flatten the output of the generator over the chosen speed range.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5883499
• OSTI ID: 872199
• Country of Publication: United States
• Language: English

Related Subjects

method
leveling
power
output
electromechanical
battery
function
speed
discharge
time
maximizing
load
employs
concept
series
resonance
employing
capacitor
parameters
chosen
optimally
achieve
desired
near-flatness
charged-discharged
ratio
capacitors
inserted
phase
windings
introduce
capacitative
reactances
compensate
inductive
reactance
compensating
effect
increases
drawn
generator
voltage
drops
dominant
flatten
range
values
speed ratio
power output
voltage drop
speed range
electromechanical battery
method employ
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