Vehicle-mounted direct current micro-grid system and control method

A DC microgrid, vehicle-mounted technology, applied in the field of microgrid system, to achieve the effect of reducing hardware cost and strong power supply capacity

Inactive Publication Date: 2016-03-09
ACADEMY OF ARMORED FORCES ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the access to new energy also poses challenges to the power dis

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  • Vehicle-mounted direct current micro-grid system and control method
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  • Vehicle-mounted direct current micro-grid system and control method

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with accompanying drawings and examples of implementation.

[0033] figure 1 It is a topological structure diagram of the vehicle-mounted DC microgrid system of the present invention. refer to figure 1 The vehicle-mounted DC microgrid system described in the present invention mainly includes the following components: engine-generator set 1, controllable rectifier 2, battery pack 3, bidirectional DC-DC converter 4, supercapacitor 5, photovoltaic power generation panel 6, Unidirectional DC-DC converter 7 and controllable inverter 8, two mains transmission wires with the same amplitude of 380V, and three AC circuit breakers CB of the same type 0 、CB 1 、CB 2 And 5 DC circuit breakers CB of the same type 3 、CB 4 、CB 5 、CB 6 、CB 7 . Wherein: the battery pack 3, the bidirectional DC-DC converter 4 and the supercapacitor 5 constitute the composite energy storage device of the present invention; the p...

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Abstract

The invention discloses a vehicle-mounted direct current micro-grid system and a control method. The vehicle-mounted direct current micro-grid system mainly comprises the following main components: an engine-generator set, a photovoltaic power generation panel, a battery pack, a super capacitor, a controlled rectifier, a controlled inverter, a two-way DC-DC converter, a one-way DC-DC converter, an alternating current and direct current circuit breaker and the like. Uninterruptable power supply can be ensured through flexible switching control of a grid-connected operation mode and an off-grid operation mode and the vehicle-mounted micro-grid system; 'zero perception' of a load side to mode switching can be achieved; and a unique topology and control design of one set of controlled rectifier is used by an electric supply grid and the engine-generator set in common, so that the hardware cost of the system is reduced. Particularly, an asymmetric voltage control strategy is adopted by the controlled inverter, so that the system can still output strictly symmetrical three-phase alternating current voltage even having an asymmetric load.

Description

technical field [0001] The invention relates to a micro-grid system, in particular to a vehicle-mounted (or mobile) DC micro-grid system. Background technique [0002] In recent years, with the rapid development of new high-power semiconductor switching devices, energy storage technology and converter technology, as well as the sudden emergence of renewable energy power generation, the traditional power grid topology has ushered in a revolutionary change. As an important part of the smart grid, micro-grid (referred to as "micro-grid" or "micro-grid") technology has attracted widespread attention from all over the world. Many experts and scholars at home and abroad have done a lot of in-depth and systematic research work on microgrid control strategies, stability analysis, energy storage methods, energy management, and power quality governance, and have achieved rich research results. At the same time, in the industry, countries and regions such as the United States, the Eur...

Claims

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Application Information

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IPC IPC(8): H02J1/10H02J1/12
CPCH02J1/102H02J1/12
Inventor 徐海亮廖自力马晓军魏曙光闫之峰刘春光罗宏浩
Owner ACADEMY OF ARMORED FORCES ENG PLA
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