US 10,171,012 B2Granted

Air conditioner and startup control method and system for outdoor fan of the air conditioner

AssigneeGuangdong Welling Motor Manufacturing Co., Ltd.

InventorsYanchao Fu, Xiaoan Zhao, Jie Sun, Liming Gong

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Abstract

An air conditioner and a startup control method and system for an outdoor fan of the air conditioner. While in a process of charging a bootstrap capacitor in an actuator of a motor of the outdoor fan, an initial rotation state of the motor is detected in real time, and, when charging of the bootstrap capacitor is completed, startup of the motor is correspondingly controlled on the basis of the detected initial rotation state. This allows real time initial startup work state to be acquired when charging of the bootstrap capacitor is completed, thus allowing the motor to be started smoothly, increasing the success rate in starting the motor, and solving the problem of low success rate in starting the motor of an outdoor fan.

Claims7

Dependent claims

A method for starting control over an outdoor fan of an air conditioner, wherein a motor of the outdoor fan is driven by a driver, and the method for starting control over the outdoor fan of the air conditioner comprises the following steps of:

when a bootstrap capacitor in the driver is charged, detecting an initial rotating state of the motor in real time;
and
after the bootstrap capacitor is charged, correspondingly controlling the motor to be started according to the detected initial rotating state;
wherein the step of correspondingly controlling the motor to be started according to the detected initial rotating state comprises the following steps:
Step a:
when the initial rotating state of the motor is pneumatic forward direction rotation, judging according to the rotating speed of the motor whether a motor observer converges;
executing Step e if the motor observer converges, or else executing Step d;
Step b:
when the initial rotating state of the motor is stillness, performing positioning control over the motor, and executing Step d;
Step c:
when the initial rotating state of the motor is pneumatic counter rotation, controlling the motor according to a constant deceleration to stop rotating, and executing Step d;
Step d:
controlling the motor to perform accelerated rotation in a vector control mode;
and
Step e:
controlling the motor to enter into a conventional operation state in a vector control mode.

13 more elements

A system for starting control over an outdoor fan of an air conditioner, wherein a motor of the outdoor fan is driven by a driver;

the system for starting control over the outdoor fan of the air conditioner comprises:
a charging and rotation detection module, which is used for detecting an initial rotating state of the motor in real time when a bootstrap capacitor in the driver is charged;
and
a motor starting control module, which is used for correspondingly controlling the motor to be started according to the initial rotating state detected by the charging and rotation detection module, after the bootstrap capacitor is charged;
wherein the motor starting control module comprises:
an observer judging unit, a positioning control unit, a motor deceleration control unit, a motor acceleration control unit and a motor conventional control unit, wherein
the observer judging unit is used for judging according to the rotating speed of the motor whether a motor observer converges, when the initial rotating state of the motor is pneumatic forward direction rotation;
and when a judgment result is yes, the motor conventional control unit is driven to work;
or when the judgment result is no, the motor acceleration control unit is driven to work;
the positioning control unit is used for performing positioning control over the motor when the initial rotating state of the motor is stillness, and driving the motor acceleration control unit to work;
the motor deceleration control unit is used for controlling the motor according to a constant deceleration to stop rotating when the initial rotating state of the motor is pneumatic counter rotation, and driving the motor acceleration control unit to work;
the motor acceleration control unit is used for controlling the motor to perform accelerated rotation in a vector control mode;
and
the motor conventional control unit is used for controlling the motor to enter into a conventional operation state in a vector control mode.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/504,906Filed 19 Aug 2014
Published: US 2017/0264216 A114 Sep 2017
Granted: 1 Jan 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H02P 1/265
For starting an individual polyphase induction motor: means for starting or running a triphase motor on a single phase supply
F04D 27/00
Control
F04D 27/004
Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids: by varying driving speed
H02P 1/46
For starting dynamo-electric motors or dynamo-electric converters: for starting an individual synchronous motor