US 12,009,733 B2
High voltage DC/DC converter with current shaping
Majid Pahlevaninezhad, Kingston (CA); and Praveen Jain, Kingston (CA)
Assigned to SPARQ SYSTEMS INC., Kingston (CA)
Filed by SPARQ SYSTEMS INC., Kingston (CA)
Filed on Aug. 15, 2022, as Appl. No. 17/887,941.
Prior Publication US 2024/0055972 A1, Feb. 15, 2024
Int. Cl. H02M 1/00 (2006.01); H02J 3/32 (2006.01); H02J 3/38 (2006.01); H02J 7/35 (2006.01); H02M 3/335 (2006.01)
CPC H02M 1/0025 (2021.05) [H02J 3/32 (2013.01); H02J 3/381 (2013.01); H02J 7/35 (2013.01); H02M 1/0012 (2021.05); H02M 3/33573 (2021.05); H02M 3/33584 (2013.01); H02J 2207/20 (2020.01); H02J 2300/24 (2020.01)] 10 Claims
OG exemplary drawing
 
1. A system for converting DC power to AC power suitable for an AC power grid, said DC power coming from either at least one PV panel or an energy storage subsystem, the system comprising:
a DC/DC low voltage converter for producing output DC power from received from at least one PV panel, said output DC power being for charging an energy storage subsystem;
a bi-directional high voltage DC/DC converter for converting low voltage DC power from said energy storage subsystem into high voltage DC power, said high voltage DC/DC converter being coupled to said energy storage subsystem;
a DC/AC inverter receiving high voltage DC power from said high voltage DC/DC converter, said DC/AC inverter being for converting said high voltage DC power from said high voltage DC/DC converter into AC power suitable for use with a utility grid, said DC/AC inverter being coupled between said high voltage DC/DC converter and said grid; and
a control system for controlling parameters across components of said system,
wherein said high voltage DC/DC converter shapes a high frequency current passing through a transformer in a power circuit of said HV DC/DC converter based on sensed operating conditions and tracks long-term behaviour of voltages in flying capacitors used in said power circuit.