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A 24v and 48v conversion control circuit and method for starting a generator set

A generator set, conversion control technology, applied in the direction of generator control parts, circuit devices, electrical components, etc., can solve problems such as working voltage conversion

Active Publication Date: 2020-06-16
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned analysis, the present invention aims to provide a 24V and 48V switching control circuit and method for starting a generator set to solve the problem of working voltage conversion between the 48V starter motor and the control system on the existing high-power generator set

Method used

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  • A 24v and 48v conversion control circuit and method for starting a generator set

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Embodiment 1

[0034] A specific embodiment of the present invention discloses a 24V and 48V conversion control circuit for generator set starting, such as figure 1 As shown, it includes: starting motor M, starting switch S1, first power supply G1, second power supply G2, power-off delay relay K4, power-on delay relay K3, starting contactor K5, first contactor K1, second Contactor K2, generator set control system;

[0035] The starter switch S1 is used to control the power on and off of the main circuit of the circuit; the power-off delay relay K4 is used to control the power on and off of the first contactor K1; the power-on delay relay K3 is used to control the power on and off of the starting contactor K5 The starting contactor K5 is used to control the power on and off of the starter motor M; the first contactor K1 and the second contactor K2 are used to control the series-parallel switching between the first power supply G1 and the second power supply G2; the first contactor K1 also It...

Embodiment 2

[0049] This embodiment discloses a control method applying the control circuit in Embodiment 1, including:

[0050] When the start switch S1 is closed, the power-off delay relay K4, the first contactor K1, the second contactor K2, the power-on delay relay K3, and the start contactor K5 in the circuit are energized sequentially, and the first power supply G1 and the second The second power supply G2 is in a series state, providing 48V working power supply for the starter motor M;

[0051] When the starting switch S1 is turned off, the second contactor K2, the power-on delay relay K3, the power-off delay relay K4, the starting contactor K5, and the first contactor K1 in the circuit are powered off sequentially, and the first power supply G1 and the second power supply The second power supply G2 is in parallel state, providing 24V working power supply for the generator set control system;

[0052] Among them, the power-on delay of the power-on delay relay is 2-3s, and the power-...

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Abstract

The invention relates to a 24V and 48V conversion control circuit and a method for starting a generator set, belonging to the technical field of electronic circuits, which solves the problem of working voltage conversion between a 48V starting motor and a control system on a high-power generator set. Includes starting switch for controlling on-off power of main circuit; The power-off delay relay is used for controlling the power-on and power-off of the first contactor; the power-off delay relay is used for controlling the power-on and power-off of the first contactor. The power-on delay relayis used to control the power-on and power-off of the starting contactor. The starting contactor is used to control the power on and off of the starting motor. A first contactor and a second contactorfor controlling the series-parallel switching of the first power supply and the second power supply; The first contactor is used for controlling the second contactor to power on and off of the delay relay. The first power supply and the second power supply are 24V DC power supplies, which provide power for the generator set control system, circuit main loop and starter motor. This circuit not onlymeets the demand of 24V power supply of generator control system and 48V power supply of starter motor, but also avoids transient short circuit fault during series-parallel switching.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a 24V and 48V conversion control circuit and method for starting a generator set. Background technique [0002] The diesel engine used in high-power generator sets is generally started by the starter motor. The rated voltage of the starter motor is generally 24V, and it is directly powered by a lead-acid battery. When the diesel engine starts, a start signal is provided through the switch to start the diesel engine. When the power of the diesel engine increases, the power of the starter motor also increases accordingly. In order to control the size and weight of the starter motor, the voltage of the starter motor needs to be increased to 48V. The control system of the generator set is generally a 24V DC power supply system, so the problem of voltage conversion of the working power supply of the starter motor will occur. Generally, a battery series and parallel conve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06H02P9/02
CPCH02J9/06H02P9/02
Inventor 陈鑫凯张雪玲
Owner BEIJING MECHANICAL EQUIP INST