The invention discloses a four-quadrant control method suitable for an electric forklift. The four-quadrant control method comprises the following steps that 1, bus current idc is calculated; 2, calculating system power Pdc: calculating the system power according to the bus current value idc and the bus voltage Udc obtained in the step 1; and 3, correcting the speed given amplitude limiting value according to the system power Pdc in the step 2. Through an operation method of calculating the bus current, calculating the system power and limiting the amplitude of the speed given value, the maximum speed given by the motor during slope rushing is reduced, so that the risk caused by over-high braking power is effectively inhibited, the speed amplitude limiting value is adjusted by adopting a single integral, and the reliability of the system is improved. And jumping type reduction of the given speed can be avoided.
本发明公开了一种适用于电动叉车四象限控制的方法,包括以下步骤:步骤1:计算母线电流idc;步骤2:计算系统功率Pdc:根据步骤1得到的母线电流值idc与母线电压Udc,计算系统功率;步骤3:根据步骤2中的系统功率Pdc修正速度给定限幅值,本发明通过计算母线电流、计算系统功率、速度给定值限幅的操作方法,降低冲坡时电机给定的最大速度,从而有效抑制制动功率过高而带来的风险,采用单积分调节速度限幅值,可以避免出现速度给定出现跳跃式减小。
Four-quadrant control method suitable for electric forklift
一种适用于电动叉车四象限控制的方法
2022-11-29
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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