Feedforward-time efficient control of a voltage source converter connected to the grid by lowpass filters

To reduce the number of measurements in digitally controlled converter systems, observers are often proposed. This gives complicated controller equations and to obtain sufficient sampling frequency, DSPs are often proposed. In this paper, a control principle avoiding measurements by using feedforward of steady state vectors is introduced. Only one state out of three is measured. The time efficient controllers facilitates using a low cost control system.<>