# US 2011/0057516 A1 · Three phase power generation from a plurality of direct current sources > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2011/0057516 A1 - Document ID: US20110057516A1 - Status: Published application - Kind: A1 - Application number: 12/555,823 - Filed: 2009-09-09 - Published: 2011-03-10 - Earliest claimed: 2009-09-09 - Assignees: Array Converter, Inc. - Inventors: SORIN ANDREI SPANOCHE; KENT KERNAHAN - Web page: https://patentgrep.com/patent/US20110057516A1 ## CPC - H02M 7/48: using discharge tubes with control electrode or semiconductor devices with control electrode - H02J 3/381: {Dispersed generators} - H02J 3/50: Controlling the sharing of reactive power - H02J 2101/24: Photovoltaics - Y02E 10/56: Power conversion systems, e.g. maximum power point trackers - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A direct current to pulse amplitude modulated (“PAM”) current converter, denominated a “PAMCC”, is connected to an individual source of direct current. The PAMCC receives direct current and provides pulse amplitude modulated current at its three output terminals, wherein the current of each terminal is one hundred twenty degrees out of phase with the other two terminals. The pulses are produced at a high frequency relative to the signal modulated on a sequence of pulses. The signal modulated onto a sequence of pulses may represent portions of a lower frequency sine wave or other lower frequency waveform, including DC. When each phased output is connected in parallel with the outputs of similar PAMCCs an array of PAMCCs is formed, wherein each voltage phased output pulse is out of phase with respect to a corresponding current output pulse of the other PAMCCs. An array of PAMCCs constructed in accordance with the present invention form a distributed three-phase multiphase inverter whose combined output is the demodulated sum of the current pulse amplitude modulated by each PAMCC on each phase. ## Claims ### Claim 1 A system for converting direct current electrical power into three phase alternating current electrical power, the system comprising: two or more direct electrical current sources; a pulse amplitude modulated current converter (“converter”) connected to each direct electrical current source, wherein each of the converters receives direct electrical current from its respective direct electrical current source and provides a first pulse amplitude modulated current pulse at a first phase at a first output terminal of the converter and a second pulse amplitude modulated current pulse at a second phase at a second output terminal and a third pulse amplitude modulated current pulse at a third phase at a third output terminal and further wherein the first output terminal of each converter is electrically connected in parallel with the first output terminals of all of the other converters in the system and the second output terminal of each converter is electrically connected in parallel with the second output terminals of all of the other converters in the system and the third output terminal of each converter is electrically connected in parallel with the third output terminals of all of the other converters in the system, further wherein the first and the second and the third current pulses of at least two converters are out of phase with respect to the first and the second and the third current pulses of each other, thereby summing the current pulses of each phase of all of the converters such that a signal modulated onto the pulse output of the converters is demodulated. ### Claim 2 (depends on 1) The system according to claim 1, wherein the current pulse of each converter is out of phase with respect to the current pulses of all other converters of the same voltage phase. ### Claim 3 (depends on 1) The system according to claim 1 wherein the signal is a sixty-cycle alternating current voltage. ### Claim 4 (depends on 1) The system according to claim 1 wherein the signal is an approximately fixed value of direct current voltage. ### Claim 5 (depends on 1) The system according to claim 1 wherein the signal is a square wave. ### Claim 6 (depends on 1) The system according to claim 1 wherein the signal is a triangle wave. ### Claim 7 (depends on 1) The system according to claim 1 wherein the signal is a Gaussian wave. ### Claim 8 (depends on 1) The system according to claim 1 wherein the signal provides a communications signal for communicating data. ### Claim 9 (depends on 8) The system according to claim 8, wherein the communications signal provides data from a given converter to at least one other converter in the system. ### Claim 10 (depends on 8) The system according to claim 8, wherein the communications signal provides data from a given to converter to all other converters in the system. ### Claim 11 (depends on 8) The system according to claim 8, wherein the data comprises phase data. ### Claim 12 (depends on 8) The system according to claim 8, wherein the data comprises control commands. ### Claim 13 (depends on 8) The system according to claim 8, wherein the data comprises operational data. ### Claim 14 (depends on 1) The system according to claim 1 wherein the two or more direct electrical current sources are photovoltaic panels. ### Claim 15 (depends on 1) The system according to claim 1 wherein the two or more direct electrical current sources are wind powered generators. ### Claim 16 (depends on 1) The system according to claim 1 wherein the two or more direct electrical current sources are tidal power generators. ### Claim 17 (depends on 1) The system according to claim 1 wherein the two or more direct electrical current sources are piezoelectric power generators. ### Claim 18 (depends on 1) The system according to claim 1 wherein the two or more direct electrical current sources are batteries. ### Claim 19 (depends on 8) The system according to claim 8, wherein the communications signal is superimposed upon the signal. ### Claim 20 (depends on 1) The system according to claim 1, wherein the current pulses are modified to diminish any distortion of the signal.