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Auxiliary power supply of bidirectional energy storage inverter

An energy storage inverter and auxiliary power supply technology, which is applied in the direction of electrical components, output power conversion devices, AC power input conversion to DC power output, etc., can solve problems such as difficulty in obtaining power for the control system, and achieve convenient maintenance and replacement Effect

Inactive Publication Date: 2016-08-24
JIANGSU FGY ENERGY STORAGE RES INST
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Since there is no power grid, the power acquisition of the control system inside the bidirectional energy storage inverter has become a major problem

Method used

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  • Auxiliary power supply of bidirectional energy storage inverter

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Embodiment Construction

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0012] As shown in Figure 1, the embodiment of the present invention includes:

[0013] An auxiliary power supply for a bidirectional energy storage inverter, including a first AC circuit breaker, a second AC circuit breaker, a bidirectional thyristor, a UPS power supply, an AC relay, an inverter unit, and a control system, and the bidirectional thyristor Connected between the first AC circuit breaker and the inverter unit, the second AC circuit breaker and the UPS power supply are respectively connected between the ...

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Abstract

The invention discloses an auxiliary power supply of a bidirectional energy storage inverter. The auxiliary power supply is composed of a first alternating-current circuit breaker, a second alternating-current circuit breaker, a bidirectional silicon controlled rectifier, a UPS power supply, an alternating-current relay, an inverter unit and a control system. The bidirectional silicon controlled rectifier is connected between the first alternating-current circuit breaker and the inverter unit; the second alternating-current circuit breaker and the UPS power supply are connected between the bidirectional silicon controlled rectifier and the inverter unit; the UPS power supply is connected with the alternating-current relay and the control system; and the inverter unit is connected with the second alternating-current circuit breaker and the control system. According to the auxiliary power supply provided by the invention, modularization of the auxiliary power supply is realized and thus maintenance and replacement can be carried out conveniently; and an automatic switching circuit can switch various working modes for the bidirectional energy storage inverter automatically. Meanwhile, the auxiliary power supply also adapts to occasions with extreme conditions, wherein the occasions include one with power exhausting of the UPS power supply due to self discharging.

Description

technical field [0001] The invention belongs to the technical field of charging devices, and in particular relates to an auxiliary power supply for a bidirectional energy storage inverter. Background technique [0002] The bidirectional energy storage inverter has three working modes: grid-connected charging, grid-connected discharge, and off-grid. Among them, the two working modes of grid-connected charging and grid-connected discharge require the bidirectional energy storage inverter to be connected to the grid, so the power consumption of the control system inside the bidirectional energy storage inverter can be directly obtained from the grid. However, the off-grid working mode requires the two-way energy storage inverter and the grid to be disconnected and independently generate power to supply AC loads. Since there is no power grid, it is a big problem to get power for the control system inside the bidirectional energy storage inverter. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/797H02J3/38H02J3/28
CPCH02M7/797H02J3/28H02J3/38
Inventor 林建平司红磊李青海陈强
Owner JIANGSU FGY ENERGY STORAGE RES INST
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