CN-224204815-U - Emergency power supply system

CN224204815UCN 224204815 UCN224204815 UCN 224204815UCN-224204815-U

Abstract

The utility model relates to the technical field of generators, in particular to an emergency power supply system. The emergency power supply system comprises a variable frequency motor, a unit starting module, an inverter, an energy storage inverter, a starting motor, a power piece and an energy storage battery, wherein a rotor of the variable frequency motor is in transmission connection with the power piece, an output end of the variable frequency motor is electrically connected with an input end of the inverter, the unit starting module is respectively electrically connected with the inverter, the starting motor and the energy storage battery, the inverter is electrically connected with the energy storage inverter and the power piece and in communication connection with the energy storage inverter, the energy storage inverter is electrically connected with the energy storage battery and an output end of the inverter, and the starting motor is electrically connected with the energy storage battery and in transmission connection with the power piece.

Inventors

Xie anyuan
SHAO LIJUN
LUO HONG
Liu Zhangai
ZHANG JIE

Assignees

重庆安来动力机械有限公司

Dates

Publication Date: 20260505
Application Date: 20250310

Claims (4)

1. The emergency power supply system is characterized by comprising a variable frequency motor (1), a unit starting module (2), an inverter (3), an energy storage inverter (4), a starting motor (5), a power piece (6) and an energy storage battery (7), wherein a rotor of the variable frequency motor (1) is in transmission connection with the power piece (6), an output end of the variable frequency motor (1) is electrically connected with an input end of the inverter (3), the unit starting module (2) is respectively and electrically connected with the inverter (3), the starting motor (5) and the energy storage battery (7), the inverter (3) is electrically connected with the energy storage inverter (4) and the power piece (6) and is in communication connection with the energy storage inverter (4), the energy storage inverter (4) is electrically connected with the energy storage battery (7) and an output end of the inverter (3), and the starting motor (5) is electrically connected with the energy storage battery (7) and is in transmission connection with the power piece (6).
2. The emergency power supply system according to claim 1, wherein the inverter (3) comprises a rectifying and voltage stabilizing module (31) and a DC-AC inversion module (32), the rectifying and voltage stabilizing module (31) and the DC-AC inversion module (32) are connected in series, an input end of the rectifying and voltage stabilizing module (31) is electrically connected with an output end of the variable frequency motor (1), an input end of the energy storage inverter (4) is connected between the rectifying and voltage stabilizing module (31) and the DC-AC inversion module (32), and an output end of the energy storage inverter (4) is connected with an output end of the DC-AC inversion module (32).
3. Emergency power supply system according to claim 1 or 2, characterized in that the inverter (3) is connected with a mode selection module (8), the mode selection module (8) being used for realizing the selection of the energy saving mode, the hybrid mode and the oil engine mode of the emergency power supply system.
4. An emergency power supply system according to claim 3, characterized in that the inverter (3) is connected with a photovoltaic power generation module and/or a wind power generation module.

Description

Emergency power supply system Technical Field The utility model relates to the technical field of generators, in particular to an emergency power supply system. Background The generator (Generators) refers to a mechanical device that converts mechanical energy into electrical energy, and the energy generated by the power element is converted into mechanical energy, transmitted to the generator, and then converted into electrical energy by the generator. The power piece can be a water turbine taking water flow as a driving source, a steam turbine taking air flow as a driving source, a diesel engine taking fuel combustion as a driving source or other power machines. In the scene of household emergency electricity utilization, the generator adopts power to drive the power frequency generator to directly supply power to household loads. The generator needs to be provided with a battery and a starting motor, and the battery only participates in the starting of the generator, so that the function is single. Meanwhile, the rotating speed of the traditional generator is fixed, and the rotating speed formula is F=P, wherein F represents the frequency of the generator, the unit is hertz (Hz), P represents the pole pair number of the generator, and N represents the rotating speed of the generator, and the unit is revolutions per minute (rpm). The efficiency of the generator running under different loads is different, and the generator needs to run all the time and wait, so the energy use efficiency of the generator is lower. Disclosure of utility model The utility model aims to solve the technical problem of providing an emergency power supply system which can solve the problems of single battery function and low energy use efficiency. In order to solve the technical problems, the utility model provides the following technical scheme: The utility model provides an emergency power supply system which comprises a variable frequency motor, a unit starting module, an inverter, an energy storage inverter, a starting motor, a power piece and an energy storage battery, wherein a rotor of the variable frequency motor is in transmission connection with the power piece, the output end of the variable frequency motor is electrically connected with the input end of the inverter, the unit starting module is respectively and electrically connected with the inverter, the starting motor and the energy storage battery, the inverter is electrically connected with the energy storage inverter and the power piece and is in communication connection with the energy storage inverter, the energy storage inverter is electrically connected with the energy storage battery and the output end of the inverter, and the starting motor is electrically connected with the energy storage battery and is in transmission connection with the power piece. Through adopting above-mentioned technical scheme, energy storage battery is to the starter motor power supply, and starter motor can provide the power for the power spare and start under the control of unit start module to the power spare drive inverter motor electricity generation of being convenient for. When the emergency power supply system is started, the inverter can provide an alternating current power supply, and the output of the inverter meets the output rated voltage requirement. Meanwhile, the alternating current energy output by the rectifying and voltage stabilizing module can be stored after the energy storage inverter inverts, the household appliance is powered through the energy storage inverter, the output of the energy storage inverter meets the output rated voltage requirement, and the inverter and the energy storage inverter can be connected with each other to output power. When the energy storage inverter has redundant electric quantity, the energy storage battery can be charged, and the electric quantity can be stored by the energy storage battery, so that an external circuit is not needed for charging. When the energy storage battery discharges, the direct current is output, and the output direct current can be discharged outwards through the energy storage inverter or can be discharged outwards through the inverter after passing through the energy storage inverter. The direct current output by the energy storage battery can also be used for supplying power to the unit starting module. Therefore, the energy use efficiency of the generator is higher, and the problem of single battery function can be effectively solved. The inverter comprises a rectifying voltage-stabilizing module and a DC-AC inversion module, wherein the rectifying voltage-stabilizing module and the DC-AC inversion module are connected in series, the input end of the rectifying voltage-stabilizing module is electrically connected with the output end of the variable frequency motor, the input end of the energy storage inverter is connected between the rectifying voltage-stabilizing module and the DC-AC inversion modul