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

A technology of charge and discharge control and control principle, applied in the field of off-vehicle charge and discharge control system, can solve the problems such as the inability to guarantee control passivity, and achieve the effect of improving the ability of two-way friendly interaction, friendly and flexible control, and good friendly control

Pending Publication Date: 2020-06-19
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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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

Method used

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

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Embodiment Construction

[0042] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0043] The invention proposes a virtual synchronous non-vehicle charging and discharging method based on the Hamiltonian principle, which combines the Hamiltonian control method with the virtual synchronous machine technology to provide a passive and inertia-friendly method for off-vehicle charging and discharging. A new type of control method.

[0044] Solution of the present invention is as follows:

[0045]The off-vehicle charging and discharging machine adopts bidirectional DC / DC and DC / AC two-stage main circuit topology, DC / DC adopts non-isolated topology, DC / AC adopts MMC multi-level structure, and is connected to the AC grid based on LC filter;

[0046] The control system adopts a virtual synchronous machine structure based on the Hamiltonian principle, mainly including active power adjustment control, rotor motion control, flux linkage con...

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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...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/32H02J7/00H02J7/02B60L53/00B60L53/60B60L55/00
CPCH02J3/00H02J3/32H02J7/0068B60L53/00B60L53/60B60L55/00Y02T10/70Y02T10/7072Y02T90/14Y02T90/12
Inventor 刘伟东李磊李晓辉陈彬李丹杨光梁彬刘小琛邹琪刘洋洋赵庆来
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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