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Adaptive pulse width modulation solution of wind driven generator converter

A wind power converter and pulse width modulation technology, which is applied in the direction of converting AC power input into AC power output, electrical components, and output power conversion devices, etc., can solve the problem that the wind turbine converter cannot reach the optimal working state, etc. , to reduce the possibility that the fixed pulse width modulation method does not match the system requirements, improve the ride-through capability, and reduce the switching loss.

Active Publication Date: 2012-11-21
WUXI SILENT ELECTRIC SYST SES TECH CO LTD +1
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Problems solved by technology

[0019] The purpose of the present invention is to provide an adaptive pulse width modulation solution to solve the problem that the wind turbine converter cannot reach the optimal working state in a single pulse width modulation mode during the operation of the wind turbine

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  • Adaptive pulse width modulation solution of wind driven generator converter
  • Adaptive pulse width modulation solution of wind driven generator converter
  • Adaptive pulse width modulation solution of wind driven generator converter

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Embodiment Construction

[0047] Preferred embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:

[0048] The adaptive pulse width modulation solution of the wind power converter includes a working condition judgment module (10) for judging the working condition of the converter in real time; a pulse width modulation mode performance evaluation module (11) for The comprehensive performance factor of pulse width modulation is given according to the weighting of working conditions; a selection module (12) is used to select the optimal pulse width modulation mode in real time; and a pulse width modulation waveform generation module (13) is used to realize generating the selected The pulse width modulation waveform;

[0049] In the above adaptive pulse width modulation solution for wind power converters, the working condition judgment module (10) communicates with the generator controller (14) and the network side controller (15) in the wind powe...

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Abstract

The invention relates to a pulse width modulation solution which is applied to the filed of wind driven generator converters. The optimal pulse width modulation waveform mode is dynamically and adaptively selected according to the system characteristics of a wind driven generator converter, the real-time operating conditions in wind driven generator application and the requirement priority of thesystem, and thus, the optimal output characteristics of the converter is achieved. The invention solves the problem that the wind driven generator converter in a single pulse width modulation mode can not operate in the optimal state. A core module of the solution is a pulse width modulation mode performance calculation module 11, and the module 11 gives the comprehensive performance values of different modulation modes in the current system and under the current operating conditions according to different system parameters, real-time measurement variables and system requirements; then, a mode selection module selects the modulation mode with the highest comprehensive performance value; and finally, a waveform generating module outputs waveform.

Description

Technical field: [0001] The invention relates to a novel power electronic pulse width modulation solution, which is applied to a converter of a wind power generator to realize that the converter can work in an optimal state under various complex conditions. Background technique: [0002] Wind turbine converters for high-power power electronics are an important part of modern wind turbines. The cost of the converter accounts for about 15% of the cost of the entire wind turbine. The reliability of the converter is an important link to ensure the reliable operation of the wind turbine, and its performance is also one of the key factors that determine whether the wind turbine can be connected to the grid. [0003] Pulse Width Modulation (Pulse Width Modulation) technology is the core technology of wind turbine converters, and its function is to form a variable frequency and variable voltage AC effect by chopping pulses of DC voltage (Vdc). [0004] The application of pulse wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458
Inventor 乌云翔邵诗逸朱臻聂赞相杜欣立徐奕翔张青华
Owner WUXI SILENT ELECTRIC SYST SES TECH CO LTD
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