発電機を電源として接続したマトリックスコンバータの入力電流ベクトル制御の特性検証

抄録

In this paper, we discuss the characteristics of input current vector control of a matrix converter with a generator as the input. The line impedance is higher than the impedance of the power grid, and the resonance between the synchronous reactance of the generator and the input capacitance results in instability behavior operation of the matrix converter. Input current stability control was proposed by the authors as a solution to this problem. However, the efficiency of the generator decreased when conventional control was employed at a light load. By using the proposed method, we can achieve a stable input current by employing proportional-integral-derivative (PID) control and optimize the input power factor according to the pole position of the generator. The validity of the proposed control strategy was confirmed by performing experiments. The proposed control achieves stable operations at an RL load, and a THD of 2.8% is obtained for the input current.