一种非线性电子负载基准电流的产生方法

输入基准电流的产生是非线性电子负载设计的关键技术,若采用谐波叠加的方式,必须已知基准电流的谐波信息,而且无法实现对任意参数非线性负载的模拟。为了克服传统方式的缺陷,以桥式整流非线性负载电路为例,在分析其状态方程的基础上,提出依据整流电路参数,直接产生相应输入基准电流波形的方法。在硬件实现上,综合速度和资源因素,采用CORDIC和插值相结合的算法,减少了对时钟周期和硬件资源的消耗。通过MATLAB和QuartusⅡ软件仿真,验证了该方法能够消耗较少的时钟周期和硬件资源,产生与理论电流波形相一致的非线性电子负载基准电流。

A Method of Reference Current Waveform Production of Nonlinear Electronic Loads

The generation of the reference current waveform is the key technique of the design of the nonlinear electronic load. The harmonic information has to be known when the harmonic superposition method is adopted. By this method, the simulation of nonlinear load with arbitrary parameter can not be realized. In order to solve the limitation of the traditional method, by taking the rectification circuit for example, a method of generating the reference current waveform based on analyzing the equation of state of the circuit and the load parameter is presented. In the hardware realization, an algorithm combining the CORDIC with the interpolation is adopted for the speed and resource factors, thus reducing the consumption of clock period and hardware resource. The simulation done with MATLAB and Quartus II software shows that the use of this method can generate the nonlinear electronic load reference current waveform consistent with the theoretical current waveform by consuming less clock period and hardware resource.