1. A power system for an industrial facility, said power system comprising a hybrid solid oxide fuel cell (HSOFC) system coupled to at least one DC load and to at least one AC load, wherein the at least one DC load defines a DC power demand value and the at least one AC load defines an AC power demand value, the DC power demand value and the AC power demand value define a power demand ratio, said HSOFC system configured to generate DC power and generate AC power with a power generation ratio substantially complementary to the power demand ratio.
2. The power system in accordance with claim 1, wherein the power demand ratio and the power generation ratio both define approximately 30% AC power demand, approximately 30% AC power generation, approximately 70% DC power demand, and approximately 70% DC power generation.
3. The power system in accordance with claim 1, wherein said HSOFC system comprises:
a SOFC system; and
an engine-generator unit coupled in flow communication with said SOFC system.
4. The power system in accordance with claim 3, wherein said SOFC system is configured to generate DC power exclusively and said engine-generator unit is configured to generate AC power exclusively.
5. The power system in accordance with claim 4 further comprising a DCDC converter coupled to said SOFC system and to the at least one DC load.
6. The power system in accordance with claim 1 further comprising:
a DC conductor coupled to the at least one DC load; and
an AC conductor coupled to the at least one AC load.
7. The power system in accordance with claim 7 further comprising at least one of:
an inverter coupled to said DC conductor and to said AC conductor, said inverter configured to convert at least a portion of the DC power to AC power;
an AC power grid circuit breaker coupled to said AC conductor and an AC power grid, said AC power grid circuit breaker configured to facilitate supplementing the AC power with AC grid power;
a transformer coupled to a portion of said AC conductor;
a rectifier coupled to said AC conductor and to said DC conductor, said rectifier configured to convert at least a portion of the AC power to DC power; and
a bi-directional ACDC converter configured to convert at least a portion of the AC power to DC power and convert at least a portion of the DC power to AC power.
8. The power system in accordance with claim 1, wherein said HSOFC system comprises:
an engine-generator unit; and
a black start system comprising a starter battery and a start driver coupled to said engine-generator unit.
9. The power system in accordance with claim 8, wherein:
said engine-generator unit is a gas turbine engine; and
said start driver is one of an electric motor and a diesel engine.
10. A method of operating a power system for an industrial facility, the power system including a hybrid solid fuel oxide fuel cell (HSOFC) system configured to generate direct current (DC) power and generate alternating current (AC) power with a predetermined power generation ratio, said method comprising:
transmitting a predetermined value of DC power to at least one DC load, wherein the at least one DC load defines a DC power demand value;
transmitting a predetermined value of AC power to at least one AC load, wherein the at least one AC load defines an AC power demand value, the DC power demand value and the AC power demand value define a power demand ratio; and
generating DC power and AC power with the HSOFC system such that the power generation ratio is substantially complementary to the power demand ratio.
11. The method in accordance with claim 10, wherein generating DC power and AC power with the HSOFC system comprises substantially maintaining the power demand ratio and the power generation ratio at approximately 30% AC power demand, approximately 30% AC power generation, approximately 70% DC power demand, and approximately 70% DC power generation.
12. The method in accordance with claim 10, wherein the HSOFC system includes a SOFC system and a engine-generator unit, and wherein generating DC power and AC power with the HSOFC system comprises generating DC power exclusively with the SOFC system and generating AC power exclusively with the engine-generator unit.
13. The method in accordance with claim 12 further comprising regulating DC voltage on a DC conductor coupled to the at least one DC load through at least one of:
energizing a DCDC converter downstream of the SOFC system and upstream of the at least one DC load;
transmitting AC power from an AC conductor coupled to the engine-generator unit and the at least one AC load through at least one rectifier to the DC conductor; and
transmitting AC power from the AC conductor coupled to the engine-generator unit and the at least one AC load through a bi-directional ACDC converter to the DC conductor.
14. The method in accordance with claim 12 further comprising regulating AC voltage on an AC conductor coupled to the at least one AC load through at least one of:
energizing a transformer downstream of the engine-generator unit and upstream of the at least one AC load;
transmitting DC power from a DC conductor coupled to the SOFC system and the at least one DC load through an inverter to the AC conductor;
closing an AC power grid circuit breaker to couple an AC power grid to the AC conductor; and
transmitting DC power from a DC conductor coupled to the SOFC system and the at least one DC load through a bi-directional ACDC converter to the AC conductor.
15. The method in accordance with claim 10, wherein the HSOFC system includes an engine-generator unit, said method further comprising performing a black start with the engine-generator unit.
16. The method in accordance with claim 15, wherein performing a black start with the engine-generator unit comprises at least one of:
coupling a starter battery to an electric motor rotatably coupled to the engine-generator unit; and
coupling the starter battery to a diesel engine rotatably coupled to the engine-generator unit.
17. An industrial facility comprising:
a direct current (DC) power system coupled to at least one DC load and a DC conductor coupled to the at least one DC load, wherein the at least one DC load defines a DC power demand value;
an alternating current (AC) power system coupled to at least one AC load and an AC conductor coupled to the at least one AC load, wherein the at least one AC load defines an AC power demand value, the DC power demand value and the AC power demand value define a power demand ratio; and
a hybrid solid oxide fuel cell (HSOFC) system coupled to the at least one DC load and to the at least one AC load, said HSOFC system configured to generate DC power and generate AC power with a power generation ratio substantially complementary to the power demand ratio.
18. The industrial facility in accordance with claim 17, wherein the power demand ratio and the power generation ratio both define approximately 30% AC power demand, approximately 30% AC power generation, approximately 70% DC power demand, and approximately 70% DC power generation.
19. The industrial facility in accordance with claim 17, wherein said HSOFC system comprises:
a SOFC system configured to generate DC power exclusively; and
an engine-generator unit coupled in flow communication with said SOFC system, said engine-generator unit configured to generate AC power exclusively.
20. The industrial facility in accordance with claim 17 further comprising at least one of:
a DCDC converter coupled to said SOFC system and to the at least one DC load;
an inverter coupled to said DC conductor and to said AC conductor, said inverter configured to convert at least a portion of the DC power to AC power;
an AC power grid circuit breaker coupled to said AC conductor and an AC power grid, the AC power grid circuit breaker configured to facilitate supplementing the AC power with AC grid power;
a transformer coupled to said AC conductor;
a rectifier coupled to said AC conductor and coupled to said DC conductor, said rectifier configured to convert at least a portion of the AC power to DC power; and
a bi-directional ACDC converter configured to convert at least a portion of the AC power to DC power and convert at least a portion of the DC power to AC power.
21. The industrial facility in accordance with claim 17 wherein said HSOFC system comprises:
a engine-generator unit; and
a black start system comprising a starter battery and a start driver coupled to said engine-generator unit.
22. The industrial facility in accordance with claim 21, wherein:
said engine-generator unit is a gas turbine engine; and
said start driver is one of an electric motor and a diesel engine.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-14. (canceled)
15. An optical integrated circuit device comprising:
a light transmission member for transmitting light, the light transmission member being in the form of a flat plate;
an optical waveguide propagating light emitted from a light source; and
a plurality of light transmissionreception units transmittingreceiving a signal tofrom each other by sharing the light transmission member for use as a light transmission path; wherein
each of the plurality of light transmissionreception units includes:
a first optical resonance member formed into the shape of a ring and disposed, in the proximity of the light transmission member and substantially parallel thereto, between the light transmission member and the optical waveguide, the first optical resonance member resonating with light propagating through the optical waveguide when either of a voltage or a magnetic field is applied;
an optical emission member formed into the same shape as that of the first optical resonance member and disposed between the light transmission member and the first optical resonance member in a manner where contact is made with the first optical resonance member, the optical emission member guiding, to the light transmission member, resonant light propagating through the first optical resonance member;
a second optical resonance member formed into the shape of a ring and disposed in the proximity of the light transmission member and substantially parallel thereto, the second optical resonance member resonating with light propagating through the light transmission member when either of the voltage or the magnetic field is applied;
an optical reception member disposed between the light transmission member and the second optical resonance member in a manner where contact is made with the second optical resonance member, the optical reception member guiding, to the second optical resonance member, light propagating through the light transmission member; and
an optical detection unit detecting resonant light propagating through the second optical resonance member.
16. The optical integrated circuit device according to claim 15, wherein
the second optical resonance member includes first and second optical resonators disposed away from each other in a planar direction of the light transmission member; wherein
the optical reception member includes
a first optical reception member disposed in a manner where contact is made with the first optical resonator and
a second optical reception member making contact with the second optical resonator and rotated, in a planar direction of the light transmission member, substantially 90 degrees from a position of the first optical reception member; wherein
the optical detection unit includes:
a first optical detector detecting resonant light propagating through the first optical resonator; and
a second optical detector detecting resonant light propagating through the second optical resonator.
17. The optical integrated circuit device according to claim 16, wherein
each of the plurality of light transmissionreception units further includes a signal processing circuit receiving a signal by calculating the sum of a first output signal output from the first optical detector and a second output signal output from the second optical detector.
18. The optical integrated circuit device according to claim 17, wherein
the signal processing circuit further transmits a signal via the light transmission member in response to application or non-application of either of the voltage or the magnetic field to the first optical resonance member.
19. The optical integrated circuit device according to claim 15, wherein
light propagating through the optical waveguide is a plurality of light beams having a plurality of discrete wavelengths or continuous wavelengths in a given range; wherein
when either of the voltage or the magnetic field is applied, the first optical resonance member resonates with one of the plurality of light beams forming light propagating through the optical waveguide, the one of the plurality of light beams having a wavelength.
20. The optical integrated circuit device according to claim 15, wherein
each of the first and second optical resonance members includes an electro-optical material, a magneto-optical material, or a material having an optical refraction index that varies in response to electricitymagnetism.
21. The optical integrated circuit device according to claim 20, wherein
each of the first and second optical resonance members includes any one of (Ba,Sr)TiO3, LiNbO3, Pb(Zr,Ti)O3, LiTaO3, BaTiO3, K(Ta,Nb)O3, ZnO, ADP(NH4H2PO4), KDP(KH2PO4), YIG(Y3Fe5O12), BIG(Bi3F5O12), GdPr2F5O12, MnBi, GaAs, Ge and Si.
22. The optical integrated circuit device according to claim 15, wherein
the light transmission member includes a transparent material having a refraction index larger than that of air.
23. The optical integrated circuit device according to claim 22, wherein
the light transmission member includes any one of SiN, SiO2, SiON, resist, and plastic.
24. An optical integrated circuit device comprising:
a light transmission member transmitting light, the light transmission member being in the form of a flat plate; and
a semiconductor substrate disposed in the proximity of the light transmission member and substantially parallel thereto; wherein the semiconductor substrate includes:
i (i is a positive integer) optical waveguides propagating light from a light source, the optical waveguides being formed on a main surface on the side of the light transmission member;
i first optical resonance member groups disposed corresponding to the i optical waveguides, each of the first optical resonance group being formed on one optical waveguide in a manner where contact is made with the one optical waveguide;
i optical detection unit groups disposed corresponding to the i optical waveguides;
i second optical resonance member groups disposed corresponding to the i optical waveguides, each of the second optical resonance member group being formed on one optical detection unit group in a manner where contact is made with the one optical detection unit group; and
i signal processing circuit groups disposed corresponding to the i optical waveguides; wherein
each of the i first optical resonance member groups includes:
j (j is 2 or a larger integer) first optical resonance members each formed into the shape of a ring; and
j optical emission members disposed corresponding to the j first optical resonance members, each of the j optical emission members being in the same shape as that of the first optical resonance member and disposed between the light transmission member and the first optical resonance member in a manner where contact is made with the first optical resonance member; wherein
each of the i optical detection unit groups includes j optical detection units; wherein
each of the i second optical resonance member groups includes:
j second optical resonance members each formed into the shape of a ring; and
j optical reception members disposed corresponding to the j second optical resonance members, each of the optical reception members being disposed between the light transmission member and the second optical resonance member in a manner where contact is made with the second optical resonance member; wherein
each of the i signal processing circuit groups includes j signal processing circuits; wherein
when either of a voltage or a magnetic field is applied, each of the j first optical resonance members guides, to the light transmission member via the optical emission member, one of light beams propagating through the optical waveguide, the one of light beams having a wavelength resonating with the first optical resonance member; wherein
when either of a voltage and a magnetic field is applied, each of the j second optical resonance members guides, to the optical detection unit, one of light beams received from the light transmission member via the optical reception member, the one of light beams having a wavelength resonating with the second optical resonance member; wherein
each of the j optical detection units detects a light beam guided by the second optical resonance member; wherein
each of the j signal processing circuits transmits a signal in response to application or non-application of either of a voltage or a magnetic field to the first optical resonance member and processes a detection signal detected by the optical detection unit in response to application or non-application of either of a voltage or a magnetic field to the second optical resonance member.
25. The optical integrated circuit device according to claim 24, wherein
each of the j second optical resonance members includes first and second optical resonators disposed away from each other in a planar direction of the semiconductor substrate; wherein
each of the j optical reception members includes:
a first optical reception member disposed in a manner where contact is made with the first optical resonator; and
a second optical reception member in contact with the second optical resonator and rotated, in a planar direction of the semiconductor substrate, substantially 90 degrees from a position of the first optical reception member; wherein
each of the j optical detection units includes:
a first optical detector detecting resonant light propagating through the first optical resonator; and
a second optical detector detecting resonant light propagating through the second optical resonator.
26. The optical integrated circuit device acceding to claim 25, wherein each of the j signal processing circuits receives a signal by calculating the sum of a first output signal output from the first optical detector and a second output signal output from the second optical detector.