US 9,812,985 B2
Solar power conditioning unit
Cuauhtemoc Rodriguez, Impington (GB)
Assigned to SOLARCITY CORPORATION, San Mateo, CA (US)
Filed by SolarCity Corporation, San Mateo, CA (US)
Filed on Dec. 8, 2015, as Appl. No. 14/961,892.
Application 14/961,892 is a continuation of application No. 14/331,194, filed on Jul. 14, 2014, granted, now 9,246,397.
Application 14/331,194 is a continuation of application No. 13/276,885, filed on Oct. 19, 2011, granted, now 8,811,047, issued on Aug. 19, 2014.
Application 13/276,885 is a continuation of application No. 12/160,743, granted, now 8,089,785, issued on Jan. 3, 2012, previously published as PCT/GB2007/050014, filed on Jan. 12, 2007.
Claims priority of application No. 0600658.9 (GB), filed on Jan. 13, 2006.
Prior Publication US 2016/0226399 A1, Aug. 4, 2016
Int. Cl. H02M 5/458 (2006.01); H02M 7/48 (2007.01); H02M 7/5387 (2007.01)
CPC H02M 7/4807 (2013.01) [H02M 5/458 (2013.01); H02M 7/53871 (2013.01); Y02E 10/56 (2013.01); Y02E 10/76 (2013.01); Y10S 323/906 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A power conditioning unit for delivering power from a DC power source to an AC circuit, the power conditioning unit comprising:
a DC input for receiving power from the DC power source;
an AC output for delivering AC power to the AC circuit;
a non-electrolytic energy storage capacitor configured to store energy from the DC power source for delivery to the AC circuit, wherein a peak amplitude of a fluctuating DC voltage on the energy storage capacitor depends on an amount of power transferred from the DC power source to the AC circuit;
a DC to DC converter having an input connection coupled to the DC input and an output connection coupled to the energy storage capacitor; and
a DC to AC converter having an input connection coupled to the energy storage capacitor and an output connection coupled to the AC output.