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1. WO2014131028 - METHOD AND APPARATUS FOR REACTIVE POWER CAPABLE INVERTERS

Publication Number WO/2014/131028
Publication Date 28.08.2014
International Application No. PCT/US2014/018389
International Filing Date 25.02.2014
IPC
H02M 7/48 2007.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
H02S 40/32 2014.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC MODULES
40Components or accessories in combination with PV modules, not provided for in groups H02S10/-H02S30/137
30Electrical components
32comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
G05F 1/67 2006.1
GPHYSICS
05CONTROLLING; REGULATING
FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
1Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
66Regulating electric power
67to the maximum power available from a generator, e.g. from solar cell
CPC
H02J 2300/26
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
2300Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
20The dispersed energy generation being of renewable origin
22The renewable source being solar energy
24of photovoltaic origin
26involving maximum power point tracking control for photovoltaic sources
H02J 3/00
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
H02J 3/381
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
381Dispersed generators
H02J 3/385
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
381Dispersed generators
382the generators exploiting renewable energy
383Solar energy, e.g. photovoltaic energy
385Maximum power point tracking control for photovoltaic sources
H02J 3/46
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
46Controlling of the sharing of output between the generators, converters, or transformers
H02M 7/53875
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
53using devices of a triode or transistor type requiring continuous application of a control signal
537using semiconductor devices only, e.g. single switched pulse inverters
5387in a bridge configuration
53871with automatic control of output voltage or current
53875with analogue control of three-phase output
Applicants
  • ENPHASE ENERGY, INC. [US]/[US]
Inventors
  • FORNAGE, Martin
Agents
  • YEUNG, Matthew M.
Priority Data
61/768,89425.02.2013US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR REACTIVE POWER CAPABLE INVERTERS
(FR) PROCÉDÉ ET APPAREIL POUR DES CONVERTISSEURS FOURNISSANT UNE PUISSANCE RÉACTIVE
Abstract
(EN) A system, method, and apparatus for converting DC input power to AC output power, including a DC-AC inverter employing: a first feedback loop for determining a maximum power point (MPP) and operating the DC-AC inverter proximate the MPP. A second feedback loop for determining a difference between a first power measurement and a second power measurement, producing an error signal indicative of the difference, and coupling the error signal to the first feedback loop to adjust at least one operating parameter of the DC-AC inverter to drive toward the MPP, where the first power measurement and the second power measurement are each determined based on a phase shift between an AC output voltage from the DC-AC inverter and an AC output current from the DC-AC inverter.
(FR) La présente invention se rapporte à un système, à un procédé et à un appareil permettant de convertir une puissance d'entrée en courant continu (CC) en puissance de sortie en courant alternatif (CA) et comprenant un convertisseur CC/CA qui utilise : une première boucle de rétroaction pour déterminer un point de puissance maximale (MPP pour Maximum Power Point) et faire fonctionner le convertisseur CC/CA à proximité du point MPP. Une seconde boucle de rétroaction pour déterminer une différence entre une première mesure de puissance et une seconde mesure de puissance, produit un signal d'erreur indicatif de la différence et couple le signal d'erreur à la première boucle de rétroaction pour ajuster au moins un paramètre de fonctionnement du convertisseur CC/CA pour arriver au point MPP, la première mesure de puissance et la seconde mesure de puissance étant chacune déterminées sur la base d'un déphasage entre une tension alternative de sortie du convertisseur CC/CA et un courant alternatif de sortie du convertisseur CC/CA.
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