Company Filing History:
3 out of 898 
1 out of 5,468 
Years Active: 1995-2025
Title: Innovations by Mohammed S Arefeen
Introduction
Mohammed S Arefeen is an accomplished inventor based in Houston, TX (US). He has made significant contributions to the field of electrical engineering, particularly in the area of energy management systems. With a total of 4 patents to his name, Arefeen's work focuses on enhancing the efficiency and reliability of drive circuits and regenerative energy systems.
Latest Patents
One of Arefeen's latest patents is titled "Managing regenerative energy of rod pump system without dynamic braking resistor." This innovative 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 then converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank can store regenerative power on the DC bus from the inverter and supply the stored DC power to the DC bus for conversion to three-phase AC power to drive the electric motor. The control circuitry pre-charges the capacitor bank from the AC power of the power source and monitors parameters of the variable-frequency drive to detect fault conditions.
Another notable patent is the "Method and apparatus for riding through power disruptions of a drive circuit." This electrical ride-through (ERT) unit is designed to apply voltage to a drive circuit during disruptions of line voltage. The ERT unit includes a capacitor that prevents voltage application during normal operation but activates during voltage drops, ensuring continuous operation of the drive circuit.
Career Highlights
Throughout his career, Arefeen has worked with prominent organizations such as Weatherford Technology Holdings and The Texas A&M University System. His experience in these companies has allowed him to develop and refine his innovative ideas in energy management and electrical systems.
Collaborations
Arefeen has collaborated with notable professionals in his field, including Mehrdad Ehsani and Thomas Anthony Lipo. These collaborations have contributed to the advancement of his research and the successful development of his patents.
Conclusion
Mohammed S Arefeen is a distinguished inventor whose work in energy management systems has led to several innovative patents. His contributions continue to impact the field of electrical engineering positively.