Starting control circuit of direct-current oil pump motor and control method of starting control circuit

An oil pump motor and starting control technology, which is applied to the starter of a single DC motor, motor generator/starter, etc., can solve the problems of large starting current and large impact on equipment, and achieve the effect of simple circuit and high stability

Active Publication Date: 2019-09-06
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a DC oil pump motor startup control circuit and its control method to at least solve the technical problem in the prior art that the DC lubricating oil pump control cabinet has a large startup current, resulting in a large impact on the equipment

Method used

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  • Starting control circuit of direct-current oil pump motor and control method of starting control circuit
  • Starting control circuit of direct-current oil pump motor and control method of starting control circuit
  • Starting control circuit of direct-current oil pump motor and control method of starting control circuit

Examples

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Effect test

Embodiment 1

[0018] According to an embodiment of the present invention, an embodiment of a starting control circuit for a DC oil pump motor is provided, figure 1 It is a circuit diagram of the starting control circuit of the DC oil pump motor according to the embodiment of the present invention, such as figure 1 As shown, the circuit includes:

[0019] One or more stages of resistor access circuit 10, wherein each stage of resistor access circuit includes: a switch element and a resistor, wherein the input end of the switch element is connected to the positive pole of the power supply, and the output end of the switch element is connected to the first end of the resistor Connected, and connected to the second end of the resistance in the primary resistance access circuit.

[0020] Specifically, the above-mentioned one-stage or multi-stage resistance access circuit is set in the armature circuit of the motor. figure 1 shows a multi-level resistor circuit, combined with figure 1 As shown...

Embodiment 2

[0059] According to an embodiment of the present invention, an embodiment of a control method for a start-up control circuit of a DC oil pump motor is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer such as a set of computer-executable instructions system, and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0060] image 3 It is a flow chart of the control method of the start-up control circuit of the DC oil pump motor according to the embodiment of the present invention, the start-up control circuit of the DC oil pump motor includes the start-up control circuit of the DC oil pump motor in Embodiment 1, such as image 3 As shown, the method includes the following steps:

[0061] Step S102, when the DC oil pump motor is started, each switching element is controlled to be ...

Embodiment 3

[0091] According to an embodiment of the present invention, a storage medium is provided, and the storage medium includes a stored program, wherein, when the program is running, the device where the storage medium is located is controlled to execute the control method for the start-up control circuit of the DC oil pump motor in Embodiment 1 .

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Abstract

The invention discloses a starting control circuit of a direct-current oil pump motor and a control method of the starting control circuit. The circuit comprises a one-stage or multi-stage resistor access circuit and a controller, wherein each stage of resistor access circuit comprises a switching element and a resistor, wherein the input end of the switching element is connected with the positiveelectrode of a power supply; the output end of the switching element is connected with the first end of the resistor and is connected with the second end of the resistor in the one-stage resistor access circuit; the controller is connected with the control pins of each switching element and is used for controlling the switching elements to be conducted according to preset conduction conditions from back to front stage by stage sequentially, so as to cut off the resistors in the resistor access circuit from the starting control circuit of the direct-current oil pump motor stage by stage. The technical problem that in the prior art, the starting current of a direct-current lubricating oil pump control cabinet is large, and the impact on equipment is relatively high can be solved.

Description

technical field [0001] The invention relates to the field of oil pump control, in particular to a start-up control circuit of a DC oil pump motor and a control method thereof. Background technique [0002] The bearing of the steam turbine determines the radial direction and axial position of the rotor in the cylinder, and oil is used as the lubricating medium to take away the heat. Therefore, the reliable operation of the oil supply system is the basic condition for the bearing to work well, and has a great relationship with the safety of the steam turbine. , it is more important to ensure the safety of large units. When the unit breaks down and shuts down in an emergency, the outlet oil pressure of the main oil pump will drop, and the AC high and low pressure auxiliary oil pump should be automatically switched on according to the pressure linkage, and there should be no oil cut-off accident. However, sometimes it cannot be automatically switched on due to linkage failure, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/20
CPCH02P1/20
Inventor 张勇杰
Owner CHNA ENERGY INVESTMENT CORP LTD
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