Typical load in a car charging station:
Lighting equipment: Since a large number of energy-saving fluorescent lamps are used inside the car charging station, a large amount of harmonic current is generated. When the fluorescent lamp is connected to a three-phase four-wire load, a large third harmonic current flows through the center line.
Charger (pile): Since there are many rectification links in the charger, a large number of three-phase rectifiers are used in the charger. This is a high-power power electronic nonlinear load for the power grid, which will generate a lot of harmonics. wave. The presence of harmonics causes severe distortion of the voltage and current waveforms in the power system of the charging station, which greatly deteriorates the quality of the power supply.
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