基于双输入Boost电路的风光互补发电系统研究

传统风光互补发电系统通常采用2套DC/DC装置以实现最大功率点跟踪,实际运营时投资成本高.Boost电路应用在MPPT上具有输入电流连续,驱动电路简单的优点.采用了一种新型的双输入升压斩波电路,该电路可以实现2种不同性质的电源输入,简化了传统的多输入变换器的电路结构,提高了电压增益,降低了开关器件电压应力.详细阐述了双输入Boost电路风光互补发电系统扰动观察法的控制策略.仿真结果表明,风力机和太阳能电池板同时或独立供电时,所设计的双输入Boost电路都能够实现最大功率点跟踪.

Wind-solar Hybrid Generating System Based on Dual-input Boost Converter

Traditional wind-solar hybrid generating system often uses two DC/DC devices respectively to achieve the maximum power point tracking which bring higher investment during the actual operation. Boost circuit which applied to MPPT has the advantages of continuous input current and simple drive circuit. In this paper, a model of wind-solar hybrid generating system is established based on a double-input Boost circuit. The circuit can use two different types of power supply as the input. Compared with the traditional multi-input converter, the structure of the new one is simplified, the voltage gain is increased, and the switching device voltage stress is reduced. The control strategy of the disturbance injection method used to the system is described in detail. The simulation results show that the designed dualinput Boost circuit is able to achieve the maximum power point tracking whenever the wind turbine and solar panels simultaneously or independently operation.