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Permanent magnet synchronous motor current type position estimation method for wind power generation based on adaptive observer and position estimation device

A technology of permanent magnet synchronous motor and observer, which is applied in the direction of control of electromechanical transmission, control of generator, motor generator control, etc. It can solve problems such as difficult implementation and complex algorithm, and achieve the effect of easy implementation and improved efficiency

Active Publication Date: 2016-12-14
HENAN NORMAL UNIV
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Problems solved by technology

In the control of wind power generators, it is necessary to estimate the position of the motor. At present, the results of estimating the position of the motor are: the current results are: the patent "permanent magnet synchronous motor quasi-sensorless position servo control device and method" with the announcement number CN104333285A A method for position detection of permanent magnet synchronous motors is proposed, however, the algorithm is complex and not easy to implement

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  • Permanent magnet synchronous motor current type position estimation method for wind power generation based on adaptive observer and position estimation device
  • Permanent magnet synchronous motor current type position estimation method for wind power generation based on adaptive observer and position estimation device
  • Permanent magnet synchronous motor current type position estimation method for wind power generation based on adaptive observer and position estimation device

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 Shown, the present invention comprises the following steps:

[0023] The first step is to collect the phase current of the permanent magnet synchronous motor , go to the second step;

[0024] In the second step, the pole allocation technique is used to design the control coefficient matrix L, so that is the Hurwitz matrix. in, ; ;Go to step 3;

[0025] The third step is to build the observer

[0026]

[0027]

[0028]

[0029] in, ; ; with are observer state variable 1 and state variable 2, respectively; is the phase current of the permanent magnet synchronous motor; is the parameter observed by the observer; is an intermediate state variable; with It is the initial value of the intermediate variable (the value range is 0~1000); is the control parameter (value range is 0~10000); L is the co...

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Abstract

A permanent magnet synchronous motor current type position estimation method for wind power generation based on an adaptive observer and a position estimation device. The position estimation device comprises a current sensor, a signal amplifier, a filter and a position estimator. The current sensor acquires phase current of the permanent magnet synchronous motor. The acquired signal is processed by the signal amplifier and the filter. The processed signal is transmitted to the position estimator, thereby estimating the position of the permanent magnet synchronous motor. The position estimator is obtained through operating the permanent magnet synchronous motor current type position estimation method for wind power generation according to the invention by a CPU. The permanent magnet synchronous motor current type position estimation method for wind power generation and the position estimation device are beneficial in that motor position estimation efficiency is improved because the method can be easily realized.

Description

technical field [0001] The invention relates to a current-type position estimation method and device of a permanent magnet synchronous motor for wind power generation based on an adaptive observer. Background technique [0002] With the continuous enhancement of people's awareness of environmental protection, wind power technology has developed rapidly in recent years. Because the permanent magnet synchronous generator has the advantages of light weight and easy control, it is widely used in wind power generation. In the control of wind power generators, it is necessary to estimate the position of the motor. At present, the results of estimating the position of the motor are: the current results are: the patent "permanent magnet synchronous motor quasi-sensorless position servo control device and method" with the announcement number CN104333285A A position detection method of permanent magnet synchronous motor is proposed. However, the algorithm of this method is complex an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/13H02P21/18H02P21/22
CPCH02P21/13Y02P80/10
Inventor 王立吴喜桥李雪萍宋孝辉
Owner HENAN NORMAL UNIV
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