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

Abstract

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.

Inventors:
 [1]
  1. Walnut Creek, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872199
Patent Number(s):
5883499
Assignee:
Regents of University of California (Oakland, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
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; /322/318/

Citation Formats

Post, Richard F. Method for leveling the power output of an electromechanical battery as a function of speed. United States: N. p., 1999. Web.
Post, Richard F. Method for leveling the power output of an electromechanical battery as a function of speed. United States.
Post, Richard F. Fri . "Method for leveling the power output of an electromechanical battery as a function of speed". United States. https://www.osti.gov/servlets/purl/872199.
@article{osti_872199,
title = {Method for leveling the power output of an electromechanical battery as a function of speed},
author = {Post, Richard F},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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