Control of a voltage-source converter connected to the grid through an LCL-filter-application to active filtering

摘要: In this paper, a control principle for voltage source converter connected to the grid through an LCL-filter is presented. The dynamic performance compared with obtained L-filter and dead-beat vector system. Measured frequency responses active filtering operation verify principle. By using LCL-filter, high attenuation of harmonics caused by PWM can be simultaneously. Different methods are compared. It advantageous use Fourier-method since it allows compensation time delays occurring in system domain. along domain, performed at moderate switching frequencies. This major advantage systems, such as rectifier option.