US Patent Issued to Weatherford Technology Holdings on Oct. 14 for "Managing regenerative energy of rod pump system without dynamic braking resistor" (Texas Inventor)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,078, issued on Oct. 14, was assigned to Weatherford Technology Holdings LLC (Houston).

"Managing regenerative energy of rod pump system without dynamic braking resistor" was invented by Mohammed S. Arefeen (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A variable-frequency drive includes a rectifier, a filter, an inverter, a capacitor bank, and control circuitry. The rectifier converts AC power from a power source to DC power on a DC bus for filtering by the filter. The inverter converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. The capacitor...