The invention discloses a charging current ripple suppression and charger control method and system, and the method comprises the steps: soft start judgment: carrying out the pre-charging of a charger, and judging whether the charger meets the soft start requirement or not; an operation state judgment step: after the charger is softly started, judging whether the charger meets an operation requirement or not, and judging the operation state of the charger according to a first judgment result; and a compound control step: after PI control is carried out on the charger according to the running state of the charger, whether a compound control flag bit is 1 is judged, and compound control is carried out on the charger according to a second judgment result. According to the invention, double-loop control is introduced in a constant voltage mode, a quasi-proportional resonance controller is connected in parallel on the basis of traditional PI control, and a current loop internal control strategy is upgraded to a composite controller, so that the problem of charging current fluctuation when the input direct-current voltage of the charger contains an alternating-current component with a specific frequency is solved.
本申请公开了一种充电电流纹波的抑制与充电机控制方法及系统,充电电流纹波的抑制与充电机控制方法包括:软起判断步骤:充电机预充电,判断所述充电机是否满足软起要求;运行状态判断步骤:所述充电机软起后,判断所述充电机是否满足运行要求,根据第一判断结果判断充电机运行状态;复合控制步骤:根据所述充电机运行状态对所述充电机进行PI控制后,判断复合控制标志位是否为1,根据第二判断结果对所述充电机进行复合控制。本发明在恒压模式下引入了双环控制,并且在传统PI控制的基础上,并联了准比例谐振控制器,将电流环内部控制策略升级为复合控制器,来解决充电机输入直流电压包含特定频率的交流分量时的充电电流波动问题。
Charging current ripple suppression and charger control method and system
一种充电电流纹波的抑制与充电机控制方法及系统
2022-12-09
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 |
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