- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
This paper proposes voltage compensation method performed by a dynamic voltage restorer (DVR) that minimizes its output power and can also be adapted to minimize its compensating voltage amplitude. The method relies on the construction of a proper voltage reference which takes into account the load power factor and makes use of a recursive least square (RLS) technique. The RLS estimates the grid voltage amplitude and can also be applied to estimate the grid voltage phase, in the case of the minimization of the injected voltage amplitude. This paper also introduces a repetitive controller to track the compensating voltage. This controller is suitable for sinusoidal references and is robust to harmonic distortions, sags and swells. Simulated and experimental results show the DVR efficacy to protect the load under different deviations of the grid voltage.