High-voltage brushless doubly-fed machine control method, system and device and readable storage medium

A doubly-fed motor and control method technology, applied in the control system, vector control system, motor generator control, etc., can solve the problems of motor out-of-step reactive current, excessive, high-voltage brushless doubly-fed motor unstable operation, etc. , to achieve the effect of strong versatility and high reliability

Active Publication Date: 2019-01-18
SHENZHEN INVT ELECTRIC
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Problems solved by technology

When the high-voltage brushless doubly-fed motor is running in doubly-fed condition, that is, in the syn

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  • High-voltage brushless doubly-fed machine control method, system and device and readable storage medium
  • High-voltage brushless doubly-fed machine control method, system and device and readable storage medium
  • High-voltage brushless doubly-fed machine control method, system and device and readable storage medium

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Embodiment Construction

[0043] The core of the present invention is to provide a control method, system, equipment and readable storage medium of a high-voltage brushless double-fed motor, which can maintain the stable operation of the high-voltage brushless double-fed motor The reactive current can be used as a reference to adjust the output voltage of the frequency converter, thereby controlling the magnitude of the reactive current on the side of the variable frequency winding, which has strong versatility and high reliability.

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present in...

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Abstract

The invention discloses a high-voltage brushless doubly-fed machine control method, system and device and a readable storage medium. The control method comprises the following steps: obtaining a reference quantity of a frequency conversion winding side of the high-voltage brushless doubly-fed machine; obtaining a frequency change amount according to the reference amount and the electric angle frequency of the frequency conversion winding side; controlling an output target frequency of the frequency converter, wherein the target frequency is the sum of an electric angle frequency and a frequency change amount; acquiring the current reactive current on the frequency conversion winding side; adjusting the output voltage of the frequency converter is adjusted according to the current reactivecurrent and the VF curve so that the current reactive current is equal to the preset reactive current. By compensating the output frequency of the frequency converter, The output voltage of the inverter can be adjusted according to the VF curve and the reactive current of the inverter winding side, so as to control the reactive current of the inverter winding side, the method has strong generalityand high reliability.

Description

technical field [0001] The invention relates to the field of doubly-fed motors, in particular to a control method, system, device and readable storage medium of a high-voltage brushless doubly-fed motor. Background technique [0002] The high-voltage brushless double-fed motor has two sets of stator windings, namely the power winding and the variable-frequency winding. Among them, the power winding is connected to the 6kV high-voltage power grid, and the variable-frequency winding is connected to the low-voltage frequency converter. The excitation of the high-voltage brushless double-fed motor is realized through the low-voltage frequency converter. / Speed ​​control, can be widely used in frequency conversion speed regulation systems with small speed regulation ranges such as fans and water pumps. When the high-voltage brushless doubly-fed motor runs in doubly-fed condition, that is, in synchronous operation state, if the output voltage of the inverter is too small or too hi...

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Application Information

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IPC IPC(8): H02P21/00
CPCH02P21/00
Inventor 曾川王二峰
Owner SHENZHEN INVT ELECTRIC
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