Back to results
US 12,009,733 B2Granted
High voltage DC/DC converter with current shaping
AssigneeSparq Systems Inc.
InventorsMajid Pahlevaninezhad, Praveen Jain
Life of this patent
Estimating the term…
Abstract
Systems and methods for use in a high voltage DC/DC converter. The high frequency current passing through a transformer in the converter is shaped according to prevailing system conditions and to ensure optimal operation. The voltages across flying capacitors in the power circuit of the DC/DC converter are also balanced and long term behaviour of these voltages are tracked.
Claims10
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.
3 more elements
A high voltage DC/DC converter comprising:
- a power circuit for converting incoming low voltage DC power into high voltage DC output power;
- and
- a control system comprising:
- a charge/discharge controller for generating a reference current value, said reference current value being used by said converter as a basis for shaping a high frequency current passing through a transformer, said reference current value being based on current operating conditions for said converter, said charge/discharge controller receiving current and voltage values from sources of said incoming low voltage DC power and from destinations of said high voltage DC output power;
- a high frequency current shaper for generating timing pulses used to shape said high frequency current flowing through said transformer, said timing pulses being based on said reference current value;
- and
- a geometric switching pulse generator for generating switching pulses for semiconductors in said power circuit based on said timing pulses from said current shaper, said switching pulses being for adjusting flying capacitor voltages in said power circuit for optimal operation of said high voltage converter.
4 more elements
Dependencies are inferred from the claim text.