Method for controlling active power filter of marine electrical network

• Main Authors: YU WANNENG, ZHENG MINYING, ZENG BUHUI, LI SUWEN, WU DEFENG
• Format: Patent
• Language: Chinese; English
• Published: 13.03.2013
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a method for controlling active power filter of a marine electrical network. The method comprises steps of collecting current voltage signals of an electric propulsion system, conducting self-adapting trapper and instantaneous reactive theory algorithm operation for the current voltage signals, obtaining real-time fundamental wave signals, subtracting sampled current input signals from the obtained real-time fundamental wave signals, obtaining harmonic signals, subjecting the signals to hysteresis control and space vector pulse width modulation algorithm, obtaining a command signal drive inverse module and obtaining the required opposite phase harmonic current. By the aid of the method, the limiting problem of prior active power filter for the grid frequency range is solved, the direct current voltage use rate is high, the direct current voltage dynamic performance is good, and the application field of the active power filter technology is widened.