US 10,770,967 B2Granted

Predictive power factor control for electronic systems

AssigneeHewlett Packard Enterprise Development LP

InventorWilliam J. Walker

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Abstract

A predictive power factor control system for an electronic system which includes a power supply providing power at a power supply output to a load having at least one component operable in a plurality of operating states. A load controller selectively determines the operating state of the load. A power factor control (PFC) circuit is coupled to the power supply and cooperates with the power supply to maintain the power factor of the power supply output within desired ranges. The load controller may provide the PFC circuit with a pending load change notification prior to a pending change in the operating state of the controlled load or prior to the activation of additional loads on the power supply output, enabling the PFC circuit to predictively adjust operation to avoid or minimize power factor fluctuations arising from changes in operating state of the load or activation of an additional loads.

Claims17

Dependent claims

An electronic system, comprising:

a load comprising one or more electronic components, the load being variable based on changes in operating states of the electronic components;
a power supply that provides power to the load;
a power factor control circuit configured to dynamically adjust a power factor of the power supplied by the power supply;
an additional load;
a hardware allocation resource, coupled to the load controller;
a power coupling circuit, coupled to the hardware allocation resource and responsive to the hardware allocation resource to selectively couple the additional load to the power supply;
the hardware allocation resource being operable to communicate a notification of a pending connection of the additional load to the power supply;
and
a load controller that is responsive to the notification of the pending connection of the additional load to the power supply to provide a pending load change notification to the power factor control circuit;
wherein the power factor control circuit is responsive to the pending load change notification to predictively adjust the power factor of the power from the power supply to compensate for a change in the load indicated by the pending load change notification.

7 more elements

A method for operating a power supply system for an electronic system including a load, comprising:

coupling a power supply output of a power supply to the load;
coupling a power factor control circuit to the power supply to maintain a power factor of the power supply output within a specified range;
coupling a load controller to the load and to the power factor control circuit, the load controller being operable to select an operating state of the load;
coupling a hardware allocation resource to the load controller, the hardware allocation resource operable to selectively couple an additional load to the power supply;
communicating from the hardware allocation resource to the load controller a pending load change notification prior to connection of the additional load to the power supply;
communicating the pending load change notification from the load controller to the power factor control circuit prior to the pending connection of the additional load to the power supply;
receiving, at the power factor control circuit, the pending load change notification from the load controller prior to the pending connection of the additional load to the power supply;
in response to the pending load change notification, predictively adjusting the power factor, such that fluctuation of the power factor of the power supply output due to connection of the additional load is minimized.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/185,060Filed 9 Nov 2018
Published: US 2020/0153329 A114 May 2020
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H02M 1/42
Details of apparatus for conversion: circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H05K 7/1492
Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures: having electrical distribution…
H05K 7/1498
Servers; Data center rooms, e.g. 19-inch computer racks: resource management, Optimisation arrangements, e.g. configuration, identification,…
H05K 7/20909
For power electronics, e.g. for inverters for controlling motor: forced ventilation, e.g. on heat dissipaters coupled to components

Family

US 2020/0153329 A1Pre-grant publication · published 14 May 2020
US 10,770,967 B2This patent

From the US filing history. Foreign family members aren’t listed.

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