Double-buoy direct-drive type wave power generation control method

Abstract

The invention discloses a double-buoy direct-drive type wave power generation control method. According to the method, according to a wave mechanics theory, under the condition that an inner buoy in adouble-buoy direct-drive type wave power generation device is kept in a static state, the vertical movement speed of a movable buoy and the vertical movement speed of waves to achieve resonance; andthe method comprises the following steps of 1, according to the wave mechanics theory, calculating the operation characteristics of the movable buoys of a double-buoy direct-drive type wave power generation device under natural conditions; 2, establishing a controller model by adopting an internal model control method; and 3, verifying the model obtained in the step 2 through experimental simulation, determining a final controller, and enabling the vertical movement speed of the movable buoy and the vertical movement speed of the wave form resonance. According to the method, aiming at the real-time changes of ocean wave frequency, wave height and period, PID control algorithm is adopted for the offshore wave power generation device, so that the vertical movement speed of the movable buoy and the vertical movement speed of waves achieve resonance, and the problem that the wave energy conversion efficiency of an existing wave power generation device is low is solved.

Description

Technical field: [0001] The invention relates to a power generation control method, in particular to a double buoy direct drive wave power generation control method. Background technique: [0002] At present, the global power production industry is in a period of rapid change and development. Traditional coal power generation is changing to hydropower, solar power, ocean power, wind power and nuclear power. Among them, ocean energy power generation technology, especially wave energy power generation technology, is known as a new power acquisition technology in the past 20 years. As a large ocean country, my country has a coastline of more than 18,000 kilometers and an island coastline of 14,000 kilometers. It has abundant wave energy resources. , according to data estimates from China's coastal ocean observation stations, the theoretical average annual wave power in China's coast is about 1.3*107KW. If it is reasonably and fully utilized, it will make my country's energy stru...

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Problems solved by technology

[0003] There are many ways to convert wave energy into electrical energy. From the perspective of wave power generation system, it can be divided into coastal installation type, near-shore installation type and offshore installation type. In order to convert wave energy into electrical energy, the generator is the One of the core components, in the existing technology, there are many control technologies for generators, but none of them consider how to maximize the efficiency of wave energy conversion

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