Motor drive system and method
US11401938B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2017 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Jun 10, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2205/07
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A motor drive and method to control a motor in a fluid system. The method may comprise determining a pressure; determining a proportional error as a limited difference between the pressure and a pressure setpoint; determining an integral step as a limited proportional error; determining an integral error as a limited sum of the integral step and a preceding unbound integral error; determining an error as the product of the integral error, the proportional error, and a gain factor; and generating a control signal to cause the inverter to output a motor voltage to drive the motor and maintain the pressure about the pressure setpoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.