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A method for controlling the temperature of a solar panel

A temperature control method and technology for solar panels, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problems of control overshoot, control overshoot and oscillation, strong hysteresis, etc. Good effect of regulation and uniform temperature

Active Publication Date: 2015-11-11
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Due to the different characteristics of the controller and the battery board at different temperatures, the use of a control algorithm with fixed parameters will cause control overshoot and oscillation
Especially when the infrared lamp works in a low current state, its hysteresis is strong, which is more likely to cause overshoot and oscillation in the control
[0005] (2) The current temperature control method cannot realize the heating and cooling of the battery board at a given rate
[0006] (3) The surface temperature uniformity of the battery board is poor during the test
As a result, the quality of the test cannot be fundamentally guaranteed

Method used

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Embodiment

[0043] The control system of the battery panel thermal vacuum test temperature control method disclosed by the invention is as follows: figure 1 shown, including:

[0044] Step S11: Set the control target value and the heating and cooling rate.

[0045] Step S12: Calculate and obtain the working current of the infrared lamp through the control algorithm.

[0046] Step S13: Adjust the output current of the programmable power supply according to the working current of the infrared lamp calculated in step S12.

[0047] Step S14: The programmable power supply drives the infrared lamp array, and applies corresponding heat flow to the surface of the battery board.

[0048] Step S15: The surface temperature of the solar panel changes due to the influence of the heat flow output by the infrared lamp array.

[0049] Step S16: Due to the change of the surface temperature of the battery panel, the corresponding physical quantity of the temperature sensor fixed on the surface changes. ...

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Abstract

The invention discloses a temperature control method applied to thermal vacuum tests of a solar cell panel of a spacecraft. According to the temperature control method applied to the thermal vacuum tests of the solar cell panel of the spacecraft, the surface temperature of the solar cell panel serves as a controlled object, and an infrared lamp array serves as a heater. The temperature control method comprises the steps of (1) building an infrared lamp current-and-power stable-state and dynamic model on the basis of a standard PID algorithm, (2) setting ratio parameters, integral parameters and differential parameters at different temperatures, (3) setting algorithm target curves in a sectionalized mode, (4) using a two-dimensional interpolation method to improve uniformity of control, and (4) introducing a neural network model to forecast the surface temperature of a test piece. Uniformity, rate adjustability and high-precision control of the surface temperature of the solar cell panel of the thermal vacuum tests of the solar cell panel of the spacecraft are achieved.

Description

technical field [0001] The invention belongs to the field of solar cell panel ground tests, and in particular relates to a method for controlling the temperature of a spacecraft solar cell panel. Background technique [0002] The energy of the spacecraft is supplied by solar panels. In order to ensure normal operation in the space environment, solar panels need to be subjected to thermal vacuum tests to expose their material and process defects under specified pressure and temperature conditions. In the thermal vacuum test of the battery board, the infrared lamp array is used to heat the battery board, and the infrared lamp is driven by the program-controlled power supply to heat the surface of the battery board. Use a thermocouple to collect the surface temperature of the solar panel and compare it with the set target temperature to calculate the control amount. Perform closed-loop control. [0003] The existing temperature control method uses a fixed parameter PID algori...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/27
Inventor 马昆谢吉慧张春莹裴一飞刘畅朱琳李振伟
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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