Blower system and method for controlling the same

Patent metadata

Field	Value
Publication number	US-8933656-B2
Application number	US-201313845146-A
Country	US
Kind code	B2
Filing date	Mar 18, 2013
Priority date	May 31, 2012
Publication date	Jan 13, 2015
Grant date	Jan 13, 2015

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.

First claim

The invention claimed is:

1. A blower system, comprising:
a) a permanent magnet motor, the permanent magnet motor comprising a stator assembly comprising a winding, a rotor assembly, and a motor controller; and
b) a wind wheel driven by the permanent magnet motor;

wherein
the rotor assembly comprises a salient pole rotor comprising a rotor core and magnets embedded in the rotor core;
the motor controller employs a sensorless vector control mode and comprises a micro…

Assignees

• Zhongshan Broad Ocean Motor Co

Inventors

• Zhang Zheng
• Wang Jizhong
• Pan Mingpan
• Zhao Yong
• Zhou Yiqiao
• Bi Ronghua

Classifications

• H02K2213/03

  Electricity · mapped topic

• H02P6/28

  Electricity · mapped topic

• H02P21/141

  Electricity · mapped topic

• H02K1/2773

  Electricity · mapped topic

• H02K21/16 Primary

  Electricity · mapped topic