Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
146 words
A common bus energization system comprising, in combination, a first bus conductor, a second bus conductor, means for connecting a plurality of individual loads in parallel between said bus conductors, said loads including reactances capable of operating on direct current and a controllable semi-conductor connected to control the current therethrough, voltage source means including first means connected to supply a first unidirectional voltage between said first and second bus conductors which for a majority of the time is positive on said first conductor, and said voltage source means including second means to establish a second voltage between said first and second bus conductors to establish with said first voltage a resultant voltage positive on said first conductor for a majority of time and negative on said first conductor for a minority of time for a net average polarity of a positive voltage on said first conductor.
Claim 2
Dependent Claim
146 words
A common bus energization system comprising, in combination, a first bus conductor, a second bus conductor, means for connecting a plurality of individual loads in parallel between said bus conductors, said loads including reactances capable of operating on direct current and a controllable semi-conductor connected to control the current therethrough, voltage source means including first means connected to supply a first unidirectional voltage between said first and second bus conductors which for a majority of the time is positive on said first conductor, and said voltage source means including second means to establish a second voltage between said first and second bus conductors to establish with said first voltage a resultant voltage positive on said first conductor for a majority of time and negative on said first conductor for a minority of time for a net average polarity of a positive voltage on said first conductor.
Claim 3
Dependent Claim
29 words
A common bus energization system as set forth in claim 1 wherein said voltage source means establishes alternate effectiveness of said first and second means at a periodic rate.
Claim 4
Dependent Claim
32 words
A common bus energization system as set forth in claim 2 wherein said periodic rate is proportional to the frequency of an alternating voltage source supplying power to said voltage source means.
Claim 5
Dependent Claim
24 words
A common bus energization system as set forth in claim 3 wherein said periodic rate is twice the frequency of the alternating voltage source.
Claim 6
Dependent Claim
36 words
A common bus energization system as set forth in claim 2 wherein said periodic rate is at a higher frequency unrelated to the frequency of an alternating voltage source supplying power to said voltage source means.
Claim 7
Dependent Claim
33 words
A system as set forth in claim 2 including means for controlling at least one of said individual loads by control of the controllable semiconductor connected therewith and synchronized at said periodic rate.
Claim 8
Dependent Claim
79 words
A system as set forth in claim 3 including means for controlling at least one of said individual loads by triggering the controllable semiconductor connected therewith in synchronism with the frequency of the alternating voltage source, said negative voltage portions of said resultant voltage periodically on said first conductor assuring that the controllable semiconductor ceases conduction and recovers forward blocking characteristics periodically to control the current to the load despite failure of the load to develop a counter e.m.f.
Claim 9
Dependent Claim
27 words
A system as set forth in claim 2 including control means having means to establish the periodic rate at a frequency unrelated to commercially available power frequencies.
Claim 10
Dependent Claim
60 words
A common bus energization system as set forth in claim 1 wherein said first means of said voltage source means includes a main rectifier supplying power to said plurality of loads, and said second means of said voltage source means includes a smaller rectifier supplying voltage but only minimal amounts of power due to the unidirectional character of the loads.
Claim 11
Dependent Claim
52 words
A system as set forth in claim 1 including a filter on said second means of said voltage source means to establish a filtered negative direct voltage, and said first means of said voltage source remaining unfiltered to have periodically instances of substantially zero voltage difference between said first and second conductors.
Claim 12
Dependent Claim
50 words
A common bus energization system as set forth in claim 1 wherein said first means of said voltage source means includes a rectifier and said second means of said voltage source means includes a series connection of diodes establishing a voltage in series with the voltage of said first means.
Claim 13
Dependent Claim
36 words
A common bus energization system as set forth in claim 1 wherein said second means of said voltage source means establishes a voltage which is connected in shunt to the voltage output of said first means.
Claim 14
Dependent Claim
24 words
A common bus energization system as set forth in claim 1 wherein said first means of said voltage means includes a chopper voltage supply.
Claim 15
Dependent Claim
24 words
A system as set forth in claim 1 wherein said first means includes a chopper and said second means includes a shunt bias source.
Claim 16
Dependent Claim
23 words
A system as set forth in claim 1 wherein said first and second means are included in a chopper of a half-bridge configuration.
Claim 17
Dependent Claim
21 words
A system as set forth in claim 1 wherein said first and second means are included in a full bridge chopper.