Method for calculating electromagnetism of MW-level doubly-fed wind driven generator

A technology of wind power generator and calculation method, which is applied to the frequency and voltage control of the generator, and the control of the generator through the change of the magnetic field. Low-level problems, to achieve the effect of convenient query and use, good portability, and time saving

Inactive Publication Date: 2011-09-14
DONGFANG ELECTRIC CORPLESHAN NEW ENERGY EQUIP
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Problems solved by technology

[0002] The electromagnetic calculation of the motor is the core content of the motor design. It is not only related to the performance, operating stability, life, production cost, and operating cost of the motor, but also related to whether it can meet user requirements, peripheral equipment interface requirements, and process requirements. As a prerequisite for structural design, it takes a long time to determine a satisfactory electromagnetic scheme through traditional written calculations, ranging from 2 to 3 weeks to as long as one month. It also requires more manpower, and the accuracy is not high and the error is large. With the continuous emergence of new technologies and materials, the traditional electromagnetic calculation method does not take into account the operating characteristics and power characteristics of the wind turbine itself, and has the disadvantages of time-consuming, low work efficiency, complex structure, and low scalability.

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  • Method for calculating electromagnetism of MW-level doubly-fed wind driven generator
  • Method for calculating electromagnetism of MW-level doubly-fed wind driven generator
  • Method for calculating electromagnetism of MW-level doubly-fed wind driven generator

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing:

[0019] Such as figure 1 As shown, the electromagnetic calculation method for MW-level doubly-fed wind power generators includes the steps of establishing a generator diagram database and electromagnetic calculation, wherein the generator diagram database includes test data of various types of generators, calculations of various types of generators data;

[0020] The electromagnetic calculation step includes the following sub-steps: generator data input; generator main size calculation and parameter setting, when selecting the main size of the generator, calculate according to the following formula: ,in, is the electric potential coefficient, is the rated power of the motor, is the power factor of the motor, and the parameter setting includes setting the power factor of the motor according to user requirements, setting the initial value of the potential coefficient, ...

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Abstract

The invention discloses a method for calculating electromagnetism of an MW-level doubly-fed wind driven generator. The method comprises a chart database establishment step and an electromagnetism calculation step, wherein the electromagnetism calculation step comprises the following substeps: inputting generator data; calculating main sizes of the generator and setting parameters; selecting a generator winding; calculating active power; judging whether the active power is equal to rated power, entering the next step if the active power is equal to the rated power, and otherwise, turning to the substep of calculating main sizes of the generator and setting parameters; calculating a potential coefficient; calculating exciting voltage and exciting capacitance of a rotor; calculating a performance parameter; judging whether the performance parameter is in accordance with the requirement, if the performance parameter is in accordance with the requirement, entering the next step, and otherwise, turning to the step of inputting the generator data; outputting data and a characteristic curve and storing the data and the curve into the chart database; and recording relevant information into the chart database by using a modularized program. The method has the advantages that the structure is simple and the chart database is convenient to search.

Description

technical field [0001] The invention relates to an electromagnetic calculation method for a generator, in particular to an electromagnetic calculation method for a MW-level double-fed wind power generator. Background technique [0002] The electromagnetic calculation of the motor is the core content of the motor design. It is not only related to the performance, operating stability, life, production cost, and operating cost of the motor, but also related to whether it can meet user requirements, peripheral equipment interface requirements, and process requirements. As a prerequisite for structural design, it takes a long time to determine a satisfactory electromagnetic scheme through traditional written calculations, ranging from 2 to 3 weeks to as long as one month. It also requires more manpower, and the accuracy is not high and the error is large. With the continuous emergence of new technologies and materials, traditional electromagnetic calculation methods do not take i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/14H02P9/44
Inventor 蔡梅园王明川张修兵
Owner DONGFANG ELECTRIC CORPLESHAN NEW ENERGY EQUIP
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