Title:
CONTROL METHOD AND CONTROL DEVICE FOR MOTOR DRIVE SYSTEM AND VARIABLE-FREQUENCY AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2018/099187
Kind Code:
A1
Abstract:
A control method and control device for a motor drive system, and a variable-frequency air conditioner. By means of detecting a DC bus voltage value and a three-phase current value for driving a motor (S10), and according to a DC bus voltage value, an average voltage value is acquired (S20); then according to the DC bus voltage value and the average voltage value, a voltage fluctuation amount is acquired (S30); and finally, a control signal is generated according to the voltage fluctuation amount, the DC bus voltage value, and the three-phase current value so as to control an inverter of the motor drive system, thus driving the motor to operate (S40). The control method may detect the fluctuation of a DC bus voltage in real time, and adjust an Iq current value in the motor drive system in real time by detecting said fluctuation, thereby reducing the amount of fluctuation of the DC bus voltage.
Inventors:
HUO JUNYA (CN)
Application Number:
PCT/CN2017/105300
Publication Date:
June 07, 2018
Filing Date:
October 09, 2017
Export Citation:
Assignee:
GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (CN)
International Classes:
H02P27/08; H02M1/14; H02P21/22
Foreign References:
| CN106559026A | 2017-04-05 | |||
| CN202435262U | 2012-09-12 | |||
| CN106063113A | 2016-10-26 | |||
| CN104934943A | 2015-09-23 | |||
| CN105226720A | 2016-01-06 | |||
| CN103858333A | 2014-06-11 | |||
| JP2005130666A | 2005-05-19 | |||
| JP2003164179A | 2003-06-06 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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