Method for controlling temperature of inverter system by controlling a fan

Patent metadata

Field	Value
Publication number	US-9867314-B2
Application number	US-201514738729-A
Country	US
Kind code	B2
Filing date	Jun 12, 2015
Priority date	Jun 16, 2014
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A method for controlling temperature of an inverter system having an inverter and a cooling fan is provided, the method including: obtaining an internal temperature of the inverter and a DC (Direct Current)-link voltage of the inverter; and outputting a fan driving control signal for driving the fan or maintaining the fan being driven to the fan, when the internal temperature is above a predetermined fan drive setting temperature and the DC-link voltage is above a predetermined fan drive setting voltage.

First claim

What is claimed is:

1. A method for controlling temperature of an inverter system having an inverter and a cooling fan, the method comprising:
obtaining an internal temperature of the inverter and a DC (Direct Current)-link voltage of the inverter; and
outputting a fan driving control signal for driving the fan or maintaining the fan being driven to the fan, when the internal temperature is above a predetermined fan drive setting temperature and the DC-link voltage is above a predetermined fan drive setting voltage.

2. The method of claim 1 , wherein the outputting the fan driving control signal to the fan includes:
outputting a fan driving control signal for driving the fan to the fan, when the internal temperature is above a predetermined fan drive setting temperature and the DC-link voltage is above a predetermined fan drive setting voltage, in a state where the fan is stopped.

3. The method of claim 1 , wherein the outputting the fan driving control signal to the fan includes:
outputting a fan driving control signal for maintaining the fan being driven to the fan, when the internal temperature is above a predetermined fan drive setting temperature and the DC-link voltage is above a predetermined fan drive setting voltage, in a state where the fan is being driven.

4. The method of claim 1 , wherein the outputting the fan driving control signal to the fan includes:
determining whether the internal temperature is above the predetermined fan driving setting temperature;
determining whether the DC-link voltage is above the predetermined fan driving setting voltage, when the internal temperature is determined to be above the predetermined fan driving setting temperature; and
outputting the fan driving control signal for driving the fan or maintaining the fan being driven to the fan, when the DC-link voltage is determined to be above a predetermined fan drive setting voltage.

5. The method of claim 4 , wherein the outputting the fan driving control signal to the fan includes:
outputting the fan driving control signal for driving the fan to the fan when the fan is stopped, when the DC-link voltage is determined to be above the predetermined fan drive setting voltage.

6. The method of claim 4 , wherein the outputting the fan driving control signal to the fan includes:
outputting the fan driving control signal for maintaining the fan being driven to the fan when the fan is being driven, when the DC-link voltage is determined to be above the predetermined fan drive setting voltage.

7. The method of claim 1 , wherein the outputting the fan driving control signal to the fan includes:
determining whether the DC-link voltage is above the predetermined fan driving setting voltage;
determining whether the internal temperature is above the predetermined fan driving setting temperature, when the DC-link voltage is determined to be above the predetermined fan driving setting voltage; and
outputting the fan driving control signal for driving the fan or maintaining the fan being driven to the fan, when the internal temperature is determined to be above the predetermined fan drive setting temperature.

8. The method of claim 7 , wherein the outputting the fan driving control signal to the fan includes:
outputting the fan driving control signal for driving the fan to the fan, when the internal temperature is determined to be above the predetermined fan drive setting temperature, in the state where the fan is stopped.

9. The method of claim 7 , wherein the outputting the fan driving control signal to the fan includes:
outputting a fan driving control signal for maintain the fan being driven to the fan, when the internal temperature is determined to be above the predetermined fan drive setting temperature, in the state where the fan is being driven.

10. The method of claim 1 , further comprising:
outputting a fan stopping control signal for stopping the fan to the fan in response to the fan driving control signal, when the internal temperature is determined to be under a predetermined fan stop setting temperature or the DC-link voltage is determined to be under a predetermined fan stop setting voltage, in the state where the fan is being driven.

11. The method of claim 10 , wherein
the fan stop setting temperature is predetermined to be under the fan drive setting temperature, and
the fan stop setting voltage is predetermined to be under the fan drive setting voltage.

Assignees

• Lsis Co Ltd

Inventors

• Lim Deokyoung
• Yang Chun Suk

Classifications

• G05D23/19 Primary

  characterised by the use of electric means {(G05D23/1393 takes precedence)} · CPC title

• H05K7/20909

  Forced ventilation, e.g. on heat dissipaters coupled to components · CPC title

• H05K7/20945 Primary

  Thermal management, e.g. inverter temperature control · CPC title

• G05B15/02

  electric · CPC title

• H05K7/20209 Primary

  Thermal management, e.g. fan control · CPC title