Non-vehicle-mounted charging and discharging control system and method based on Hamiltonian control principle

Abstract

The invention relates to a non-vehicle-mounted charging and discharging control system and method based on the Hamiltonian control principle. The non-vehicle-mounted charging and discharging control system and method are applied to a non-vehicle-mounted charging and discharging machine to achieve friendly and stable charging and discharging control over an electric vehicle. The non-vehicle-mountedcharging and discharging machine adopts a bidirectional DC / DC and DC / AC two-stage main circuit topology. A virtual synchronous machine control method based on the Hamiltonian principle is introducedinto a bidirectional DC / AC interface, and passive control over charging and discharging is achieved through active adjustment control, rotor motion control, flux linkage control, virtual impedance control and voltage and current loop control. According to the invention, the Hamiltonian control method is combined with the virtual synchronous machine technology, a novel control system with passivityand inertia friendliness is provided for off-board charging and discharging, the energy attribute of the electric automobile can be brought into full play, the bidirectional friendly interaction capacity of the electric automobile and a power grid is improved, and stable and reliable interface guarantee can be provided for the electric automobile to participate in power grid frequency and voltageadjustment.

Description

technical field [0001] The invention relates to the field of off-vehicle chargers, in particular to an off-vehicle charging and discharging control system and method based on the Hamiltonian control principle. Background technique [0002] In recent years, electric vehicles have developed rapidly, and their intensive access has brought great challenges to the power grid. Electric vehicles have two energy attributes of electricity consumption and energy storage. They are both energy consumers and energy suppliers. Making full use of the energy attributes of large-scale electric vehicles when they are connected to realize friendly access to electric vehicle charging clusters is conducive to improving the efficiency of electric vehicles. It is very important to ensure the safe and stable operation of the power grid. As a friendly grid interface, the virtual synchronous machine plays an increasingly important role in the integration of electric vehicles. A V2G technology-based...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, aiming at the passivity problem that the existing virtual synchronous machine control cannot guarantee the control, to provide a non-vehicle charge and discharge control system based on the Hamiltonian control principle

Images