ALEXANDRIA, Va., Jan. 28 -- United States Patent no. RE50,770, issued on Jan. 27, was assigned to KIMIDRIVE LLC (Santa Clara, Calif.).
"Packet-based networking of variable frequency drives" was invented by Michael Reda Samuel (San Diego) and Sami Boutros (Union City, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "One or more Variable Frequency Drives (VFD) are connected to a packet network and the power transistor drive signals normally generated by the VFD to produce a desired Pulse Width Modulated (PWM) motor drive signal are generated by a software controller located in the packet network and transmitted to the VFD. The control of the VFDs can be (1) centralized using some centralized software cont...