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Exponential soft start control method and device and apparatus

An exponential, soft-start technology, applied in the computer field, can solve problems such as power grid imbalance, power grid and electronic components impact, and system stability, and achieve the effect of smooth current waveform and closed-loop stability

Active Publication Date: 2020-06-05
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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Problems solved by technology

The traditional starting method is that when the motor starts directly, the starting current is 4-7 times the rated current, which will cause impact on the power grid and electronic components, causing the power grid to be unbalanced
Because the traditional starting methods are all mechanical starting methods, inrush current will be generated during the starting process, which will affect the stability of the system

Method used

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  • Exponential soft start control method and device and apparatus
  • Exponential soft start control method and device and apparatus
  • Exponential soft start control method and device and apparatus

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0044] Based on the above purpose, the first aspect of the embodiments of the present invention proposes an embodiment of an exponential soft-start control method. figure 1 Shown is a schematic flow chart of the method.

[0045] Such as figure 1 As shown in , the method may include the following steps:

[0046] The S1 controller detects the input voltage and output voltage of the soft starter. The control signal output from the controller to the soft starter enables the soft starter to control the stability of the voltage at the output end to achieve an exponential soft start at the output end. The controller detects the input voltage And the output voltage to form a closed-loop control, using PFM (fr...

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Abstract

The invention provides an exponential soft start control method and device and an apparatus. The method comprises the following steps of using a controller to detect an input voltage and an output voltage of a soft starter; generating an exponential control signal according to the input voltage, the output voltage and a control parameter of the controller; sending the exponential control signal toa soft starter; in response to the soft starter receiving the exponential control signal, enabling the soft starter to adjust the output voltage according to the exponential control signal. By usingthe method provided by the invention, the increase of the frequency can be completely limited, so that the closed loop is stable, the current waveform is smooth, and the conditions of sudden change and oscillation of the current are avoided.

Description

technical field [0001] This field relates to the computer field, and more specifically relates to a method, device and device for exponential soft-start control. Background technique [0002] Power electronics play a very important role in the national economy and industrial production. Take the motor as an example. If the motor is started directly, the current of the motor can reach 4-7 times the rated current. In this way, the motor, the grid voltage and other equipment will be affected. have a great impact. Therefore, the concept of "soft start" is proposed, and now there are mainly several soft starts such as limited current soft start, voltage ramp start, and variable frequency start. Soft start is a new motor starting technology that has developed very rapidly in recent years. It uses series thyristors in the main circuit to adjust the starting torque and starting current, which is outstanding in protecting the transmission system from wear and maintaining the quality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/16H02P29/024
CPCH02P1/16H02P29/024
Inventor 刘元涛
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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