US4684875A — Power conditioning system and apparatus

Claim 1

Independent Claim 152 words

Apparatus for use with an a.c. polyphase source of variable voltage level for providing a regulated a.c. output to a load, comprising: polyphase input choke means connectable with said a.c. source for deriving an energy input substantially immune from variations of waveshape and voltage level; regulator means for receiving said energy input, including polyphase saturable reactor means and polyphase capacitor means operable therewith to synthesize a polyphase sinusoidal output connectable with said load; and polyphase motor means having a stator coupled with said output for deriving a stator field, and a rotor, said motor means being controllable to inertially impose a phase shift stability over said sinusoidal output by deriving an inertially driven generator voltage source performance exhibiting phase lag with respect to said a.c. polyphase source in the presence of short duration load transients; and control means for effecting said motor means control for operation continuously at minimum level power input.

Claim 2

Dependent Claim 152 words

Apparatus for use with an a.c. polyphase source of variable voltage level for providing a regulated a.c. output to a load, comprising: polyphase input choke means connectable with said a.c. source for deriving an energy input substantially immune from variations of waveshape and voltage level; regulator means for receiving said energy input, including polyphase saturable reactor means and polyphase capacitor means operable therewith to synthesize a polyphase sinusoidal output connectable with said load; and polyphase motor means having a stator coupled with said output for deriving a stator field, and a rotor, said motor means being controllable to inertially impose a phase shift stability over said sinusoidal output by deriving an inertially driven generator voltage source performance exhibiting phase lag with respect to said a.c. polyphase source in the presence of short duration load transients; and control means for effecting said motor means control for operation continuously at minimum level power input.

Claim 3

Dependent Claim 15 words

The apparatus of claim 1 in which said polyphase motor means exhbits minimal subtransient impedance.

Claim 4

Dependent Claim 28 words

The apparatus of claim 1 including filter means coupled with said regulator means at a location affecting said output for suppressing the generation of odd harmonic content therein.

Claim 5

Dependent Claim 30 words

The apparatus of claim 3 in which said filter means comprises a series tuned capacitor and reactor network configured to return any third harmonic energy of said output to fundamental.

Claim 6

Dependent Claim 25 words

The apparatus of claim 1 including isolation means having an isolation winding inductively isolated from said regulator means for isolating said source from said load.

Claim 7

Dependent Claim 39 words

The apparatus of claim 5 in which said isolation means comprises: primary winding means coupled with said input choke means for effecting energy transfer; and said regulator means saturable reactor means are inductively coupled with said primary winding means.

Claim 8

Dependent Claim 18 words

The apparatus of claim 1 in which said input choke means is configured having a non-linear impedance characteristic.

Claim 9

Dependent Claim 22 words

The apparatus of claim 1 including fan means for circulating air through said apparatus coupled in driven relationship with said motor means.

Claim 10

Dependent Claim 153 words

In regulator apparatus of the type wherein polyphase input chokes having non-linear impedance characteristics transfer energy from an a.c. source of variable voltage level and waveshape to a regulator including polyphase saturable reactors operating in conjunction with polyphase capacitors to synthesize a polyphase sinusoidal output, the improvement for inertially imposing a phase shift stability over said sinusoidal output, comprising: polyphase synchronous motor means having a stator coupled with said output for deriving a stator field, a rotor excitable by a select excitation current to derive a rotor field and starting circuit means actuable for deactivating said rotor field, said motor means having an output carrying substantially no load and deriving an inertially driven generator voltage source performance in the presence of short duration load transients; and control means for providing said excitation current at a minimum level selected for substantially equating the driving voltage of said motor means with the back voltage thereof.

Claim 11

Dependent Claim 153 words

In regulator apparatus of the type wherein polyphase input chokes having non-linear impedance characteristics transfer energy from an a.c. source of variable voltage level and waveshape to a regulator including polyphase saturable reactors operating in conjunction with polyphase capacitors to synthesize a polyphase sinusoidal output, the improvement for inertially imposing a phase shift stability over said sinusoidal output, comprising: polyphase synchronous motor means having a stator coupled with said output for deriving a stator field, a rotor excitable by a select excitation current to derive a rotor field and starting circuit means actuable for deactivating said rotor field, said motor means having an output carrying substantially no load and deriving an inertially driven generator voltage source performance in the presence of short duration load transients; and control means for providing said excitation current at a minimum level selected for substantially equating the driving voltage of said motor means with the back voltage thereof.

Claim 12

Dependent Claim 29 words

The regulator apparatus of claim 9 including filter means coupled with said regulator means at a location affecting said output for suppressing the generation of odd harmonic content therein.

Claim 13

Dependent Claim 31 words

The regulator apparatus of claim 10 in which said filter means comprises a series tuned capacitor and reactor network configured to return any third harmonic energy of said output to fundamental.

Claim 14

Dependent Claim 55 words

The apparatus of claim 9 in which said control means comprises: a step-down transformer coupled with said output to provide an exciter input having voltage level values proportionate with said output; means for rectifying said exciter input to provide a rectified exciter input; and means for deriving said excitation current from said rectified exciter input.

Claim 15

Independent Claim 174 words

A system for conditioning an a.c. source of power for providing a regulated a.c. output to a load, comprising: a component support housing; polyphase input inductor means mounted within said support housing connectable with said a.c. source for deriving an energy input; regulator means mounted within said support housing for receiving said energy input, including polyphase saturable reactor means and polyphase capacitor means operable therewith to synthesize a polyphase sinusoidal output connectable with said load; polyphase motor means mounted within said support housing having a stator coupled with said output and a rotor, said motor having an output carrying substantially no load and being controllable to inertially impose a phase shift stability over said sinusoidal output deriving an inertially driven generator voltage source performance in the presence of short duration load transients; control means for controlling the rotational speed of said motor means for operation continuously at minimum level power input; and filter network means mounted within said housing and coupled with said regulator means for suppressing the generation of odd harmonics induced therein.

Claim 16

Independent Claim 174 words

A system for conditioning an a.c. source of power for providing a regulated a.c. output to a load, comprising: a component support housing; polyphase input inductor means mounted within said support housing connectable with said a.c. source for deriving an energy input; regulator means mounted within said support housing for receiving said energy input, including polyphase saturable reactor means and polyphase capacitor means operable therewith to synthesize a polyphase sinusoidal output connectable with said load; polyphase motor means mounted within said support housing having a stator coupled with said output and a rotor, said motor having an output carrying substantially no load and being controllable to inertially impose a phase shift stability over said sinusoidal output deriving an inertially driven generator voltage source performance in the presence of short duration load transients; control means for controlling the rotational speed of said motor means for operation continuously at minimum level power input; and filter network means mounted within said housing and coupled with said regulator means for suppressing the generation of odd harmonics induced therein.

Claim 17

Dependent Claim 27 words

The system of claim 13 which said filter network means comprises a series tuned capacitor and reactor network configured to return any third harmonic energy to fundamental.

Claim 18

Dependent Claim 43 words

The system of claim 13 including: duct means within said support housing for directing driven cooling air to the components mounted therein; and fan means for driving said cooling air through said duct means, coupled in driven relationship with said motor means output.

Claim 19

Dependent Claim 69 words

The apparatus of claim 13 in which said polyphase motor means is a synchronous motor and said rotor thereof is excitable by a select excitation current to derive a rotor field, including starting circuit means actuable for deactivating said rotor field, and said control means derives said excitation current at a minimum level selected for substantially equating the driving voltage of said motor means with the back voltage thereof.

Claim 20

Dependent Claim 55 words

The apparatus of claim 13 in which said control means comprises: a step-down transformer coupled with said output to provide an exciter input having voltage level values proportionate with said output; means for rectifying said exciter input to provide a rectified exciter input; and means for deriving said excitation current from said rectified exciter input.

Claim 21

Dependent Claim 44 words

The system of claim 17 including: duct means within said support housing for directing driven cooling air to the components mounted therein; and fan means for driving said cooling air through said duct means, coupled in driven relationship with said synchronous motor means output.

Claim 22

Dependent Claim 28 words

The system of claim 18 in which said filter network means comprises a series tuned capacitor and reactor network configured to return any third harmonic energy to fundamental.

Claim 23

Dependent Claim 149 words

Apparatus for use with an a.c. polyphase source of variable voltage level for providing a regulated a.c. output to a load, comprising: polyphase input choke means connectable with said a.c. source for deriving an energy input substantially immune from variations of waveshape and voltage level; regulator means for receiving said energy input, including polyphase saturable reactor means and polyphase capacitor means operable therewith to synthesize a polyphase sinusoidal output connectable with said load; and polyphase synchronous motor means having a stator coupled with said output for deriving a stator field, a rotor excitable by an excitation current to derive a rotor field, said motor means deriving an inertially driven generator voltage source performance in the presence of short duration load transients; and control means for deriving said excitation current at a minimum level selected for substantially equating the driving voltage of said motor means with the back voltage thereof.

Claim 24

Dependent Claim 149 words

Apparatus for use with an a.c. polyphase source of variable voltage level for providing a regulated a.c. output to a load, comprising: polyphase input choke means connectable with said a.c. source for deriving an energy input substantially immune from variations of waveshape and voltage level; regulator means for receiving said energy input, including polyphase saturable reactor means and polyphase capacitor means operable therewith to synthesize a polyphase sinusoidal output connectable with said load; and polyphase synchronous motor means having a stator coupled with said output for deriving a stator field, a rotor excitable by an excitation current to derive a rotor field, said motor means deriving an inertially driven generator voltage source performance in the presence of short duration load transients; and control means for deriving said excitation current at a minimum level selected for substantially equating the driving voltage of said motor means with the back voltage thereof.

Claim 25

Dependent Claim 55 words

The apparatus of claim 20 in which said control means comprises: a step-down transformer coupled with said output to provide an exciter input having voltage level values proportionate with said output; means for rectifying said exciter input to provide a rectified exciter input; and means for deriving said excitation current from said rectified exciter input.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1990-08-03	1991-02-02	1991-08-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1994-08-03	1995-02-02	1995-08-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1998-08-03	1999-02-02	1999-08-04	$7700.00	Window Closed / Lapsed

Power conditioning system and apparatus

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