Dc-dc converter in a non-steady system
AssigneeEtaGen, Inc.
InventorsAnthony Da Costa, John Powers
Life of this patent
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Abstract
Multiphase electromagnetic machines, such as free-piston engines or compressors, may require, or supply, a pulsed power profile from or to a DC bus, respectively. The pulsed power profile may include relatively large fluctuations in instantaneous power. Sourcing, sinking, or otherwise exchanging power with an AC grid, via an inverter, may be accomplished by using an energy storage device and a DC-DC converter coupled to a DC bus. The energy storage device may aid in smoothing the pulsed power profile, while the DC-DC converter may aid in reducing fluctuations in voltage across a DC bus due to energy storage in the energy storage device.
Claims20
A power management system that receives a power input from a free piston power generator comprising:
- a DC bus controlled by an inverter;
- at least one energy storage device coupled to the DC bus;
- a DC-DC converter coupled to the DC bus, wherein the DC-DC converter is configured to output a smoothed power output relative to the power input.
A power management system that receives power from a power input and provides a power output to a free-piston machine comprising:
- a DC bus controlled by an inverter;
- at least one energy storage device coupled to the DC bus;
- a DC-DC converter coupled to the DC bus, wherein the DC-DC converter is configured to output a pulsed power output to the free-piston machine relative to the power input.
Dependencies are inferred from the claim text.