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A starting method and device for a doubly-fed asynchronous motor control system

A double-fed asynchronous and starting method technology, which is applied in the direction of motor generator control, AC motor control, electromechanical transmission control, etc., can solve the problems of starting control complexity, etc., and achieve the effect of simplifying the starting process and realizing direct starting

Active Publication Date: 2022-08-05
HUAZHONG UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the object of the present invention is to provide a starting method and device for a doubly-fed asynchronous motor control system, aiming to solve the problem that the existing doubly-fed asynchronous motor needs an additional motor or switchgear, and the starting control is more complicated. question

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  • A starting method and device for a doubly-fed asynchronous motor control system
  • A starting method and device for a doubly-fed asynchronous motor control system
  • A starting method and device for a doubly-fed asynchronous motor control system

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[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] The invention provides a control system for a doubly-fed asynchronous motor, comprising a three-phase AC voltage regulator, a doubly-fed asynchronous motor, a back-to-back power conversion module, a pulse generating module, a driving module, a position sensor and a controller. Doubly-fed asynchronous motor systems such as figure 1 As shown, one end of the grid-side power converter is connect...

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Abstract

The invention discloses a starting method and a device for a doubly-fed asynchronous motor control system, and belongs to the technical field of motors. The method first collects and calculates the d and q-axis current feedback values ​​i corresponding to the rotor position when the motor is close to starting by collecting and calculating the d and q-axis voltage given values ​​of the open-loop given rotor. rdq , and use it as the reference current limit or given value of the closed-loop control. It is not necessary to install the prime mover to drive the motor to start or to switch the operation mode, which effectively simplifies the starting process of the doubly-fed asynchronous motor and realizes the direct start of the doubly-fed asynchronous motor. .

Description

technical field [0001] The invention belongs to the technical field of electric motors, and more particularly, relates to a starting method and device of a doubly-fed asynchronous motor control system. Background technique [0002] my country's energy development adheres to the strategic line of economical development, clean development and safe development. At this stage, the power system of ship propulsion has achieved significant development in energy conversion and distribution, and electrification has become the development trend of ship propulsion systems. The development of the shipbuilding industry has an important impact on global transportation and the world economy, and the related technologies of large ships have also received considerable attention in the military field, which is an important manifestation of the country's military strength. In order to meet the ever-increasing demand for ship electricity, all-electric ships based on electric propulsion systems ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14H02P21/18H02P21/22H02P21/34H02P25/02
CPCH02P21/14H02P21/18H02P21/22H02P21/34H02P25/02
Inventor 倪锴彭国嘉甘醇曲荣海胡义华
Owner HUAZHONG UNIV OF SCI & TECH