摘要
介绍了一种基于Matlab中C-MEX建模的全数字单相并网逆变器的研制方法。在Matlab环境下由分立器件搭建主电路,由C-MEX进行建模,整机开发手段采用C语言源代码编译,可直接移植入嵌入式开发平台,有效提高开发效率。整机直流侧MPPT采用扰动观测法,交流侧采用电压外环、电流内环的控制方式,其中亦包含了直流偏磁抑制方法、虚拟单相锁相环以及PR调节等控制方法。最后在该仿真建模的基础上,研制了一台3 kW的单相光伏并网逆变器,将C-MEX中的C源代码移植入DSP嵌入式开发平台,经试验测试,验证了该仿真建模的正确性及该开发模式的优越性。
This paper introduces one kind of method based on the MATLAB C-MEX modeling for all-digital single phase grid connected inverter. The main circuit is built by discrete device, and the module of C-MEX is compiled with the C language source code, which can be transplanted directly into the embedded development platform to improve the development efficiency. The control method of MPPT at DC side is disturbance observation method, and the control method of AC side is based on voltage outer loops and current internal loops, which contains the control methods of DC magnetic bias suppression, virtual single-phase phase-locked loop and the PR regulator. Finally, on the basis of this modeling and simulation, a 3 kW single phase photovoltaic grid-connected inverter is developed, and then the C source code is transplanted into DSP embedded development platform. The test results show the superiority of this development pattern and prove that the simulation model is correct.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2013年第24期140-143,共4页
Power System Protection and Control
