High power density energy regeneration is one of the effective solutions to solve the contradiction between improving the damping performance and energy consumption of active suspension. The hydraulic commutator is used to realize hydraulic rectification and hydraulic variable speed/pump/motor with few teeth difference gear pairs is used to match the speed, combined with permanent magnet motor power generation and power supply to put forward kilowatt level high power density mechanical-electrical-hydraulic regenerative suspension system for high-speed tracked vehicles. The mathematical model and fluid-solid-thermo-magnetic multiphysics coupling model are built to analyze the damping performance and regenerative characteristics of the system under passive and semi-active working conditions. The simulation results show that the damping force of the system increases with the increase of the road excitation amplitude and the semi-active control can be realized by adjusting the duty cycle with the PWM control rectifier module. The high power density mechanical-electrical-hydraulic regenerative suspension system can realize kilowatt level energy regeneration, and the regenerative efficiency is more than 50% under low-frequency excitation. The temperature rise of the system is low during operation, which is helpful to improve the reliability and service life.

高功率密度能量再生是解决提高主动悬架阻尼性能与能耗矛盾的有效途径之一。采用液压换向器实现液压整流，采用少齿差齿轮副液压变速/泵/电机进行转速匹配，结合永磁电机发电和供电，提出千瓦级高功率密度机械-用于高速履带车辆的电动液压再生悬架系统。建立数学模型和流固热磁多物理场耦合模型，分析系统在被动和半主动工况下的阻尼性能和再生特性。仿真结果表明，系统阻尼力随着道路励磁幅值的增大而增大，通过PWM控制整流模块调节占空比可以实现半主动控制。高功率密度机电液回馈悬挂系统，可实现千瓦级能量回馈，低频励磁下回馈效率达50%以上。系统运行时温升低，有利于提高可靠性和使用寿命。高功率密度机电液回馈悬挂系统，可实现千瓦级能量回馈，低频励磁下回馈效率达50%以上。系统运行时温升低，有利于提高可靠性和使用寿命。高功率密度机电液回馈悬挂系统，可实现千瓦级能量回馈，低频励磁下回馈效率达50%以上。系统运行时温升低，有利于提高可靠性和使用寿命。