Siemens Energy & Automation, Inc.

Caterpillar Inc.

Terminal Power LLC

Gerald Murray Brown

Xiaobin Wang

Bradley Bailey

David Marchand

Matthew Earnest Williams

John Gunzburger

A DC-DC auto-converter module includes a positive source terminal, a negative source terminal, a positive load terminal, a negative load terminal, and a DC-DC converter. The negative source terminal cooperates with the positive source terminal to facilitate electrical connection of a DC power source thereto. The negative load terminal cooperates with the positive load terminal to facilitate connection of an electrical load thereto. The isolated DC-DC converter comprises an input circuit and an output circuit that is galvanically isolated from the input circuit. The DC-DC converter includes a positive input terminal, a negative input terminal, a positive output terminal, and a negative output terminal. At least one of the positive input terminal, the negative input terminal, the positive output terminal, and the negative output terminal is galvanically connected to at least one of the positive source terminal, the negative source terminal, the positive load terminal, and the negative load terminal.

DC-DC auto-converter module

A resistor unit adapted to be used in a resistor grid assembly. The resistor unit includes a supporting element and a resistor element. The supporting element has an aperture formed therein. The resistor element has a body portion and a tip portion at an end, which is adapted to be received in the aperture to mount the resistor element to the supporting element. Further, a tab extends from the end of the resistor element forming a part of the resistor element. The tab is configured to provide a heat shield between the supporting element and the resistor element.

Resistor grid assembly

A retarding system for an electric drive machine () includes a direct current (DC) link (), at which a DC voltage is developed, disposed between a rectifier () and an inverter (). A first contactor switch () electrically communicates with a first rail of the DC link (), and a second contactor switch () electrically communicates with a second rail of the DC link (). A first resistor grid () is connected in series between the first contactor switch () and the second contactor switch (). The first resistor grid () dissipates electrical energy in the form of heat by conducting a current between the first rail and the second rail of the DC link () when the first contactor switch () and the second contactor switch () are closed.

Electric drive retarding system and method

Certain exemplary embodiments can provide for automatic power control and/or torque boost for retarding a machine that considers a machine weight and/or a machine slope. The automatic power control and/or torque boost can provide a control margin under retard. Certain exemplary embodiments can control, or attempt to control, a speed of the machine at less than a maximum safe speed.

Enhanced braking system and method

Certain exemplary embodiments can provide for automatic power control and/or torque boost for retarding a machine. The automatic power control and/or torque boost can provide a control margin under retard. Certain exemplary embodiments comprise a method comprising: for a machine comprising a wheel drive system comprising a braking system, comparing an acceleration to a predetermined acceleration threshold; determining a dynamic maximum retard torque associated with the braking system based on said comparing activity; controlling a retard torque to no greater than the dynamic maximum retard torque; and affecting a retard power.

System and method for providing automatic power control and torque boost

A circuit connects a low-voltage high-current DC power source (P ) in series with a high-voltage low-current DC source (P ). The series connection is made under full power by using the second source P to commutate the load current and allow the first source P to be reconfigured from series to parallel operation, doubling its current rating.

Growing community of inventors

Cedarville, OH, United States of America

Gerald Murray Brown