Charging pile harmonic suppression device

• Main Authors: JIANG PENGWEI, ZHANG NINGKAI, CHEN QIANSHEN, ZENG QINGHUI, YANG JUNYE, LIN HUAIDE, RUAN JIAXIN
• Format: Patent
• Language: Chinese; English
• Published: 02.09.2022
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses a charging pile harmonic suppression device, and the device comprises a controller and a plurality of filtering modules. Wherein one end of the filtering module is connected to a live wire through the controller, and the other end is connected to a zero line; and the controller is used for acquiring a harmonic signal generated by the nonlinear load, and controlling the filtering module to be switched on according to the harmonic signal, so that the filtering module filters harmonic waves. Further, the invention provides a three-phase alternating current charging pile harmonic suppression device which comprises a plurality of filtering devices with different filtering frequencies, and each filtering device is composed of a controller and a plurality of filtering modules. The filtering device is used for controlling the filtering device with the corresponding frequency to be switched on according to the frequency of the harmonic signal, so that the filtering device filters the harmonic w