可再生能源制氢系统制氢电源研究

RESEARCH ON HYDROGEN PRODUCTION POWER SUPPLY OF RENEWABLE ENERGY HYDROGEN PRODUCTION SYSTEM

利用风电、光伏发电等可再生能源电力的制氢系统是未来制备氢能的发展方向,而制氢电源是制氢系统的核心部件。传统的基于晶闸管整流电路的制氢电源(下文简称为“晶闸管制氢电源”)存在功率因数低、谐波大,延迟长等缺点。针对这一问题,本文采用PWM整流器作为制氢电源(下文简称为“PWM制氢电源”),把逆变电路中的SPWM调制和数字控制技术应用于整流电路,使其功率因数接近1。同时,由于PWM制氢电源采用全控型器件,响应速度较快,能够提供无功补偿,所以具有一定的低电压穿越能力。此外,由于晶闸管制氢电源使用半控型器件,导致该制氢电源的工作效率比采用全控型器件的PWM制氢电源低,而且实际投入使用时还需配备无功补偿设备以提高功率因数,增加了系统损耗,所以其效率比PWM制氢电源低。最后通过Matlab/Simulink仿真验证了PWM制氢电源相较于传统晶闸管制氢电源的优点。

Abstrat:Hydrogen production systems using renewable energy power such as wind power and PV power generation are the development direction of hydrogen production in the future,and hydrogen production power supply are the core components of such hydrogen production systems.The traditional hydrogen production power supply based on thyristor rectifier circuit has disadvantages such as low power factor,large harmonics,and long delay.Aiming at this problem,this paper adopts a PWM rectifier as the power source for hydrogen production,which applies the SPWM modulation and digital control technology in the inverter circuit to the rectifier circuit to make its power factor close to 1.At the same time,because the PWM hydrogen production power supply adopts fully controlled devices,its response speed is fast,and it can provide reactive power compensation,so it has a certain low voltage ride-through capability.In addition,since the thyristor hydrogen power supply uses halfcontrolled devices,the working efficiency of the hydrogen production power supply is lower than that of the PWM hydrogen production power supply using full-controlled devices,and it needs to be equipped with reactive power compensation equipment when it is actually put into use.Improve the power factor and increase the system loss,so its efficiency is lower than that of the PWM hydrogen production power supply.Finally,the advantages of PWM hydrogen production power supply compared with traditional thyristor hydrogen power supply are verified by Matlab/Simulink simulation.