Power supply method for island special energy router

Abstract

The invention discloses a power supply method for an island special energy router. An energy router comprises an AC bus and a DC bus; an AC power supply unit is converged into the DC bus through an AC / DC converter, a photovoltaic array is converged into the DC bus through a phase shift full bridge 1, and an energy storage unit achieves the energy interaction with the DC bus through a bidirectionalDAB converter; the AC power supply unit is converged into the AC bus through a bypass switch, the DC bus achieves energy interaction with the AC bus through a PWM inverter, and the AC bus supplies power to a three-phase AC load and a single-phase AC load. The DC bus is powered by the photovoltaic, the energy storage unit and the AC power supply unit jointly, so that the admitting ability of a wide input voltage range is effectively improved. Under the load overload working condition, the PWM inverter and the AC power supply unit are combined for power supply, two AC energy channels can be provided at the same time, and the power supply overload capacity is effectively improved.

Description

technical field [0001] The invention relates to the field of power control, in particular to a power supply method for a sea-island special energy router. Background technique [0002] my country has a vast sea area, long and narrow coastline, numerous islands, and abundant coastal resources. As the outpost of the "Maritime Silk Road" strategy, islands have a special and important position in homeland security and national defense security; the development of islands is a major deployment of my country's "maritime engineering" and is the only way for my country to become a "maritime power". At present, the island's military weapons and equipment, national defense and civilian facilities urgently need stable and reliable power supply. A highly reliable power supply system is the cornerstone and important guarantee for island construction. [0003] The islands have rich reserves of new energy such as solar energy, wind energy, wave energy, and biomass energy. Compared with t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a sea island special energy router and its power supply method in view of the deficiencies of the existing technology, so as to solve the problem that the existing power interconnection topology is difficult to meet the special load requirements such as high instantaneous energy of the power supply and long overload duration

Images