Variable frequency drives systems and methods

US10712034B2 · kind B2 · utility

Assignee

• Johnson Controls Technology Company · US

Inventors

• Ryan E. Hill · Cockeysville, US
• Harold J. Dubensky · Columbia, US
• Sandeep K. Chodapaneedi · Red Lion, US
• Lindsey Walker · Stamford, US
• Nivedita Nath · Pune, IN
• Keith L. Glatfelter · York, US
• Bhushan D. Vichare · Sangli, IN
• Gnanesh Suvvada · Vizianagaram, IN
• Siddappa R. Bidari · Pune, IN
• Justin M. Fantom · York, US
• Deepak S. Kollabettu · Badami, IN
• William J. Skinner, Jr. · Millersville, US
• David Shearer · Malvern, US
• David P. Gillmen · York, US

Key dates

• Filing date: Apr 19, 2018
• Grant date: Jul 14, 2020
• Expiry date: Jul 28, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F24F2140/00
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A heating, ventilation, and air conditioning system includes an air moving device configured to move air through the HVAC system, a first variable frequency drive (VFD) configured to drive the air moving device, and a second VFD configured to drive the air moving device, wherein the first VFD and the second VFD are configured receive control instructions and to selectively operate based on the control instructions.