针对传统直驱式波浪发电系统因波浪频率与速度较低而导致其运行效率低下的问题,同时避免海水腐蚀和风浪冲击对发电装置的影响,提出一种基于线性霍尔的直驱式波浪发电最大功率跟踪控制策略。所提出的多层永磁内嵌式圆筒直线发电机功率密度较高,能有效防止海浪冲击破坏,而线性霍尔在波浪发电中可靠性强且耐海水腐蚀,能有效解决机械传感器和无位置传感器算法在海洋应用环境下的弊病。此外,根据机械共振原理提出波浪能最大跟踪策略,通过控制浮筒运动使其与波浪激励力同相位,从而提高波浪能转化效率。最后,搭建直驱式波浪发电控制策略仿真与硬件实验平台,实验与仿真结果吻合,验证所提出控制策略有效性。
Abstract
Aiming at the problem of low efficiency of traditional direct drive wave power generation system due to low wave frequency and speed, and avoiding the influence of seawater corrosion and wind wave impact on the power generation device, a linear Hall based maximum power tracking control strategy for direct drive wave power generation is proposed in this paper. The proposed multi-layer permanent magnet embedded cylinder linear generator has high power density and can effectively prevent the damage of the wave impact, while the linear Hall has strong reliability and resistance to seawater corrosion in wave power generation, and can effectively solve the disadvantages of mechanical sensors and sensorless algorithms in the marine application environment. In addition, according to the principle of mechanical resonance, the maximum tracking strategy of wave energy is proposed, and the wave energy conversion efficiency is improved by controlling the float movement to make it in phase with the wave excitation force. Finally, the control strategy simulation and hardware experiment platform of direct drive wave power generation are built. The experimental results are consistent with the simulation results, verifying the effectiveness of the proposed control strategy.
关键词
波浪能收集 /
功率控制 /
能量转换系统 /
直线电机 /
线性霍尔 /
最大效率跟踪
Key words
wave energy harvesting /
power control /
power takeoffs /
linear motors /
linear Hall /
maximum efficiency tracking
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基金
国家自然科学基金面上项目（41876096）; 江苏省自然科学青年基金（BK20201034）; 江苏省配电网智能技术与装备协同创新中心（XTCX202002）
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