Seth M McGill

Title: Innovations by Seth M McGill

Introduction

Seth M McGill is a notable inventor based in West Salem, WI (US), recognized for his contributions to the field of HVAC technology. With a total of seven patents to his name, McGill has made significant advancements in the operation and efficiency of permanent magnet motors and compressors.

Latest Patents

One of McGill's latest patents is the "Permanent Magnet Motor Harmonic Filter." This invention presents architectures and techniques that enhance the operation of permanent magnet (PM) motors, which are integral to compressors and HVAC devices. By integrating inductive filtering into the motor assembly, the design aims to reduce current ripple, lower total harmonic distortion, minimize power loss, and decrease heat generation. The first architecture features a ferromagnetic core element that creates a non-torque-producing reluctance path to the shaft. The second architecture innovatively incorporates a signal filter into the housing of the PM motor, which is typically external, thereby reducing costs and providing additional advantages. The third architecture connects an inductor to the shaft, allowing the rotation of the shaft to facilitate additional cooling for the inductor.

Another significant patent is the "Gas Bearing Compressor Backup Power." This invention outlines a compressor for a heat transfer circuit that includes a variable frequency drive (VFD), an electric motor, and a backup gas supply. During utility power interruptions, the backup gas supply utilizes DC electrical power generated by the back electromotive force