A power system having a power converter with an adaptive controller. The power system is coupled to a load and includes a power system controller that receives a signal indicating a system operational state of the load and selects a power converter operational state as a function thereof. The power system also includes a power converter with a power switch that conducts for a duty cycle to provide a regulated output characteristic at an output thereof. The power converter also includes a controller that receives a command from the power system controller to enter the power converter operational state and provides a signal to control the duty cycle of the power switch as a function of the output characteristic and in accordance with the command, thereby regulating an internal operating characteristic of the power converter to improve an operating efficiency thereof as a function of the system operational state.

Power system with power converters having an adaptive controller

A controller for a power converter and method of operating the same employable with a bridge rectifier having first and second synchronous rectifier switches. In one embodiment, the controller includes an amplifier configured to enable a turn-on delay for the first synchronous rectifier switch. The controller also includes a discharge switch having first and second switched terminals coupled to gate and source terminals, respectively, of the first synchronous rectifier switch and configured to discharge a gate-to-source capacitance of the first synchronous rectifier switch to enable a turn off thereof.

Controller for a synchronous rectifier switch

A power converter employing a tapped inductor and method of operating the same. In one embodiment, the power converter includes first and second tapped inductors including a tapped winding having a first section and a second section with a tap therebetween. The power converter also includes first and second active phase legs including a main switch series-coupled with an input node of the power converter and the first section of the tapped windings of the first and second tapped inductors, respectively. The first and second active phase legs also include an auxiliary switch interposed between the second section of the tapped windings of the first and second tapped inductors, respectively, and an output node of the power converter.

Power converter employing a tapped inductor and integrated magnetics and method of operating the same

A matrix integrated magnetics (MIM) “Extended E” core in which a plurality of outer legs are disposed on a base and separated along a first outer edge to define windows therebetween. A center leg is disposed on the top region of the base and separated from the outer legs to define a center window. The center leg is suitably positioned along a second outer edge opposite the first or between outer legs positioned along opposing outer edges. A plate is disposed on the outer legs opposite the base.

Extended E matrix integrated magnetics (MIM) core

A multi-function network printing device(10) includes customizable functions and user interfaces (48, 66) for one of several identified vertical industry spaces. The method includes the steps of: (a) providing a multi-function network printing device (10); (b) identifying a business purpose having specialized needs; and (c) customizing the built-in functions and the associated GUI icons (50, 58, 60, 62, 64, 74, 76, 78, 80, 81) based upon the specialized needs of the identified business purpose. In a more specific embodiment, the customizing step includes the step of adding additional functions to the multi-function device (10) and associated icons (50, 58, 60, 62, 64, 74, 76, 78, 80, 81) displayed on the graphical-user-interface (22). In yet a further detailed embodiment, the customizing step includes the steps of: (i) providing a plurality of customization programs, each of which are associated with a particular business purpose; (ii) selecting one of the plurality of customization programs depending upon the business purpose identified in the identifying steps; and (iii) running the selected customization program on the multi­function device (10).

Customizable multi-function printing device

Voltage regulation of power transformers by the use of a separate, removable, detachably coupled device external to the main transformer that can be attached to a main transformer unit when voltage regulation is desired. The device is connected to the three neutrals of the main transformer and can comprise: (a) a bank of three capacitors connected in wye, (b) a bank of three medium voltage (MV) or low voltage (XV) transformers, (c) one three-phase low voltage or medium voltage transformer, or (d) a combination of a XV/MV transformer and a capacitor bank.

Mark Perkins

Papers

Systems and methods for providing voltage regulation externally to a power transformer