The invention discloses a control method of a power conversion system, the power conversion system and a charging pile, the power conversion system comprises a first sampling circuit, a second sampling circuit and a power conversion circuit, and the power conversion circuit is connected with the first sampling circuit and the second sampling circuit; the control method comprises the following steps: acquiring a first sampling voltage output by a power conversion circuit and collected by a first sampling circuit, and acquiring a second sampling voltage output by the power conversion circuit and collected by a second sampling circuit; acquiring a ripple voltage of the power conversion circuit according to the second sampling voltage; obtaining a full-bandwidth voltage of the power conversion circuit according to the first sampling voltage and the ripple voltage; when it is determined that the first sampling voltage and the ripple voltage meet preset conditions, loop control is conducted on the power conversion circuit through the full-bandwidth voltage; and when it is determined that the ripple voltage exceeds the preset threshold range, loop control is performed on the power conversion circuit by using the first sampling voltage. The ripple voltage of the output voltage of the power conversion system can be effectively suppressed.
本申请公开了一种功率变换系统的控制方法、功率变换系统及充电桩,功率变换系统包括第一采样电路、第二采样电路以及功率变换电路,功率变换电路连接第一采样电路及第二采样电路;控制方法包括:获取第一采样电路采集的功率变换电路输出的第一采样电压,及获取第二采样电路采集的功率变换电路输出的第二采样电压;根据第二采样电压获得功率变换电路的纹波电压;根据第一采样电压及纹波电压获得功率变换电路的全带宽电压;确定第一采样电压及纹波电压满足预设条件时,利用全带宽电压对功率变换电路进行环路控制;确定纹波电压超出预设阈值范围时,利用第一采样电压对功率变换电路进行环路控制。本申请可有效抑制功率变换系统的输出电压的纹波电压。
Control method of power conversion system, power conversion system and charging pile
功率变换系统的控制方法、功率变换系统及充电桩
20.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
Charging pile control method, charging pile power supply mode control system and charging pile
Europäisches Patentamt | 2023
|Charging conversion device based on charging pile and charging system
Europäisches Patentamt | 2022
|DC/DC CONVERSION CIRCUIT, POWER UNIT, CHARGING PILE, AND CHARGING AND DISCHARGING HEATING METHOD
Europäisches Patentamt | 2023
|