Hybrid power system and optimal control method for mechanical outer skeleton

Abstract

The invention provides a hybrid power system and optimal control method for a mechanical outer skeleton. The system is a parallel-connection type power system, and comprises a mechanical power transmitting system, an electric transmitting system and a hydraulic oil transmitting system. The mechanical power transmitting system comprises a gasoline engine and an electric motor which are connected with a hybrid power transmission. The gasoline engine and the electric motor can independently provide power for the hybrid power transmission and can also provide power for the hybrid power transmission together. The electric transmitting system comprises an electric generator and a conversion system. The electric generator is connected with the hybrid power transmission and provides a power supply for the electric motor through the conversion system. The hydraulic oil transmitting system comprises an oil pump and a transmission system. The oil pump is connected with the hybrid power transmission and provides power to the mechanical outer skeleton through the transmission system. The power compensation mode and the power energy storage mode can be switched according to working conditions in real time, energy can be reasonably distributed between the gasoline engine and the electric motor, and the overall efficiency is the highest.

Description

technical field [0001] The invention relates to a hybrid power system, in particular to a hybrid power system applied to a mechanical exoskeleton and an optimal control method, belonging to the field of power systems. Background technique [0002] Based on the harsh conditions of the coal mine working environment, the core difficulty of the individual environmental control system is the contradiction between the human body's load-bearing capacity and the weight of the environmental control system, and the mechanical exoskeleton is an effective way to break through this contradiction. [0003] Utilize the function of mechanical exoskeleton to solve the heat damage protection, dust and gas protection in deep coal mining. At the same time, the exoskeleton has a life-saving oxygen breathing system, which can greatly reduce the labor load of personnel. It is of great significance, and it also provides strong support for the steady advancement of my country's energy industry. [0...

AI Technical Summary

Problems solved by technology

At present, the power system of mechanical exoskeletons at home and abroad is mainly powered by batteries. Under the same quality and size, compared with liquid fuel gasoline, the energy density of batteries is lower, and the power is obviously insufficient, which makes the exoskeleton's moving range and load weight limited. Battery capacity and efficiency limitations

However, if liquid fuel is simply used to replace the battery for power supply, due to the complexity of the coal mine underground operation environment, the engine is often operated at low speed or idle speed, which is difficult to meet the energy demand of various working conditions in the coal mine operation, and the engine The fuel economy is poor and the exhaust emissions are large

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