Blower system and method for controlling the same
USRE48231E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2016 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Dec 20, 2036 |
Classification
- Technology area (CPC —)General
Abstract
A blower system, including a permanent magnet motor and a wind wheel. The permanent magnet motor includes a stator assembly, a rotor assembly, and a motor controller. The rotor assembly includes a salient pole rotor including a rotor core and magnets embedded in the rotor core. The motor controller includes a microprocessor, a frequency inverter, and a sensor unit. The sensor unit inputs a phase current or phase currents, a phase voltage, and a DC bus voltage into the microprocessor. The microprocessor outputs a signal to control the frequency inverter which is connected to a winding of the stator assembly. The ratio between an air gap of the motor and the thickness of the magnets ranges from 0.03 to 0.065, and the ratio between the length of a pole arc and the length of the magnets ranges from 0.8 to 1.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.