摘要
讨论了在功率需求快速变化下质子交换膜燃料电池的动态响应性能。从系统电气输出控制的角度考虑,根据PEMFC的系统组成构建了简化的电气模型。由于实际运行过程中的信号噪声和系统自身的非线性影响,文中采用小波消噪算法和自适应模糊PID控制相结合,应用于PEMFC的输出控制。最后使用MATLAB对系统控制方案进行仿真。仿真结果表明,采用小波消噪能够有效降低系统噪声的影响,采用模糊自适应PID控制可以有效降低超调量和响应时间。系统的整体控制方案达到了预期的效果。
This paper discusses the PEMFC dynamic characteristics under quick variance of power demand. From the view of the control of system electric characteristic output, the simplified model is built according to the components of the whole generation system. Considering the signal noise during the actual operation of system and influence of nonlinear characteristics, wavelet decomposition is combined with the adaptive fuzzy PID control algorithm for applying to the output control of PEMFC system. Finally MATLAB is used to simulate the operation of control system. The simulation result shows that the influence of system noise can be efficiently reduced with wavelet decomposition and the overshoot and response time can be decreased with adaptive fuzzy PID control scheme adopted. The expected control effects can be obtained with the whole control scheme.
出处
《计算机仿真》
CSCD
2005年第3期178-180,共3页
Computer Simulation
