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A power flow power generation control system based on DC bus voltage control and its DC bus voltage control method

A technology of DC bus voltage and tidal current power generation, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of unpredictability and irregularity of renewable energy technology, reduce voltage pressure, improve power generation efficiency, The effect of reducing output harmonics

Active Publication Date: 2018-10-26
HARBIN ENG UNIV
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Problems solved by technology

However, the main disadvantage of these renewable energy technologies is their unpredictability and irregularity

Method used

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  • A power flow power generation control system based on DC bus voltage control and its DC bus voltage control method
  • A power flow power generation control system based on DC bus voltage control and its DC bus voltage control method
  • A power flow power generation control system based on DC bus voltage control and its DC bus voltage control method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] The invention provides a power flow control system based on DC bus voltage control. The power flow control system consists of a water turbine, a permanent magnet direct drive generator, an uncontrollable rectifier, a filter device, a battery cabinet, a three-phase inverter, and a main control system. system, energy release unit, etc. The power flow power generation control system adopts uncontrollable rectification, and uses the DC bus voltage control to realize the maximum power tracking of the tidal current energy. The DC bus voltage control method refers to that when the power flow velocity is higher than the rated speed of the permanent magnet direct drive generator, the excessive accumulation of electric energy output by the permanent magnet direct drive generator set on the DC side will cause the DC bus voltage to rise. In order to prevent If the DC bus v...

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Abstract

The invention relates to the technical field of new energy generation and particularly relates to a DC bus voltage control-based tidal current generation control system and a DC bus voltage control method thereof. The system comprises a water turbine, a permanent magnet direct-drive generator, an uncontrollable rectifier device, a filter device, a battery cabinet, a three-phase inverter, an ashore switch cabinet, a main control system, an energy release unit and the like. The main control system is the core part of the tidal current generation control system. The main control system is composed of a DSP 2406 chip. The DSP 2406 chip comprises an A / D conversion module, an I / O module, an encoder interface and an RS 232 serial port. The main control system controls the on / off time of an IGBT in real time, the power supply of the battery cabinet and the extra power consumption of the energy release unit, so that the voltage pressure of the three-phase inverter in a power electronic system is effectively reduced. The system is strong in flexibility. The power generation efficiency of the entire power generation system is improved.

Description

technical field [0001] The present invention relates to the technical field of new energy power generation, in particular to a power flow control system based on DC bus voltage control and a DC bus voltage control method thereof. Background technique [0002] As we all know, the combustion of fossil energy is the main cause of the great change of global climate, and it is imperative to adopt clean and pollution-free renewable new energy, which leads to the exploration of renewable new energy, such as wind energy, solar energy and ocean energy. At present, the most common renewable new energy sources are undoubtedly wind power and solar power, which have been commercialized for many years. However, the main disadvantage of these renewable energy technologies is their unpredictability and irregularity. As one of the very potential renewable new energy sources, ocean tidal current energy is clean, non-polluting, highly predictable, and has little impact on the environment. en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/32H02J3/382
Inventor 郭健杨勇郭海山姜义闫雪松杜佳张旭
Owner HARBIN ENG UNIV
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