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针对电梯超级电容(SC)能量回馈系统(ERS),设计了基于双模糊控制器与传统控制系统相结合的控制策略。两个模糊逻辑控制器(FLC)根据电网电压变化与充放电电流纹波,在线调整直流母线给定电压,并将调整的直流母线给定电压作为传统电压电流双闭环控制给定电压,作用于DC-DC变换器。仿真结果表明,这种控制策略能够降低电网能量消耗,提高电梯能量利用率。
Aiming at the elevator supercapacitor (SC) energy feedback system (ERS), the control strategy based on double fuzzy controller and traditional control system is designed. Two fuzzy logic controller (FLC) according to grid voltage changes and charge and discharge current ripple, online adjust the DC bus given voltage, and adjust the DC bus given voltage as the traditional voltage and current double closed-loop control of a given voltage, acting on DC-DC converter. The simulation results show that this control strategy can reduce the energy consumption of the power grid and improve the energy efficiency of the elevator.