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SGR wind power generation electric vehicle energy supply system

by:dcfpower     2021-03-22
u003cpu003eu003cpu003e The advantages of no (low) pollution of electric vehicles make it the main direction of contemporary automobile development. At present, it is proposed to use pollution-free energy to charge energy storage batteries in pure electric vehicles at home and abroad. Photovoltaic cells are used in electric vehicles, but solar panels are heavy and have poor reliability; this article proposes to install some small wind energy capture units in electric vehicles. 'Switched reluctance generators (SGR) are used in the field of wind power generation due to their inherent characteristics. It has great development potential and research value.u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e Ni-MH battery is a kind of pollution-free green energy, and it is the first choice for electric vehicle power battery. In related literature, Ni-MH battery The charging of the battery adopts a fuzzy control strategy, but the input of the fuzzy controller adopts battery charging current and battery temperature, or battery voltage and charging current, which is difficult to implement in engineering.' The dual-voltage electric vehicle energy supply system for power generation' establishes a SGR-based nickel-metal hydride battery charging system structure. It uses a mixture of constant current and fuzzy control to adjust the charging current. The fuzzy controller uses battery voltage and battery voltage change rate as input, which is easy to engineering Realization.u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e The dual-voltage energy supply system for pure electric vehicles based on SGR wind power generation is shown in Figure 1. The wind turbine SGR DC bus, converter, nickel-hydrogen battery and In-vehicle loads, etc. SGR uses the DC power generated by wind energy to feed into the main DC bus. The DC bus charges the on-board Ni-MH battery through a power electronic converter, or provides power to the drive motor and other loads in the car (air conditioning, lighting, etc.) ; Adopt 2 different grades of voltage DC bus to supply energy to meet the needs of different loads and improve the stability of energy supply. 'The energy flow of the system is unidirectional, which can simplify the charging circuit and energy control of the Ni-MH battery. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e When the wind conditions are good, the SGR output power is greater than the load power, and the load is directly supplied with power, and the excess power is transferred to the Ni-MH battery for storage; when the wind conditions are poor, the SGR output power is less than Load power, SGR and Ni-MH batteries jointly supply power to the load; when the SGR output power is zero, the Ni-MH battery alone supplies power to the load; when the SGR output power is zero and there is no stored energy in the Ni-MH battery, the circuit breaker can be used And the AC/DC converter draws power from the grid to charge the Ni-MH battery to improve reliability. 'The installation position and structure of the vehicle-mounted wind turbine must meet certain conditions in order to effectively capture wind energy, making the wind turbine and SGR very good Cooperate.u003c/pu003eu003cpu003eu003c/pu003eu003c/pu003eu003c/pu003e
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