Hybrid Electric Vehicle (HEV), whose main drive system is composed of at least two single drive systems that can operate at the same time, the driving power of hybrid electric vehicle mainly depends on the driving state of the hybrid electric vehicle: one is provided by a single drive system and the second is provided through multiple drive systems.

Wind energy is a kind of green energy provided to human beings because of air flow work, which belongs to renewable energy. Wind power is to convert the kinetic energy of wind into electrical energy. With the development of offshore wind power, compared with onshore wind power, offshore wind power is more challenging.

Stored energy refers to the process of storing energy through a medium or device and releasing it when needed. Energy storage is also a term in oil reservoirs, representing the ability of reservoirs to store oil and gas.