pages 17 and 18 that the phase current resulting during the
time period between the turn-on angle and turn-off angle is
controlled by switching on and off the switches 46 and 48
during this time period. Appellants disclose on pages 11 and
12 that
Appeal No. 96-2285
Application No. 08/204,913
the controller 22 shown in Figure 5 determines the modulation
rate of the switches depending on variables such as the speed
and load of the switched reluctance machine 10. On page 18 of
the specification, Appellants disclose that Figure 8a
illustrates the fixed angle, adjustable band control of the
Appellants' invention for a given speed and a high system
load. On pages 18 and 19 of the specification, Appellants
disclose that Figure 8b illustrates the fixed angle, the same
adjustable band control method for a smaller connected loading
condition but at the same speed. Viewing Figures 8a and 8b,
one observes that while the turn-on and turn-off angles are
fixed, the phase current is controlled by the modulation rate
of the switches 46 and 48.
4
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007