PTC heater current-limiting starting control system
A control system and start-up control technology, which is applied to electric heating devices, electrical components, etc., and can solve problems such as simultaneous start-up of heaters
Active Publication Date: 2021-04-06
DEYANG ZHIKE ELECTRONICS
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Problems solved by technology
[0006] Aiming at the above-mentioned deficiencies in the prior art, a PTC heater current-limiting start-up control system provided by the present invention solves the problem of avoiding simultaneous start-up of multiple heaters
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[0016] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0017] Such as figure 1 As shown, a PTC heater current limit start control system includes a first electric heating control system, a second electric heating control system, a third electric heating control system and a fourth electric heating control system, the first electric heating control system system, the second electric heating control system, the third electric heating control system and the fourth electric heating...
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The invention discloses a PTC heater current-limiting starting control system which comprises a first electric heating control system, a second electric heating control system, a third electric heating control system and a fourth electric heating control system. The first electric heating control system, the second electric heating control system, the third electric heating control system and the fourth electric heating control system are connected through control port wiring, and the first electric heating control system, the second electric heating control system, the third electric heating control system and the fourth electric heating control system are further connected with a heating system power supply. The system is composed of a plurality of independent electric heaters arranged in places such as a hydraulic station, a yaw system, a main control system, a main shaft and a generator. Multiple heaters can be prevented from being started at the same time, the starting current of the heating system is limited, and power supply of the main system is prevented from being affected by overlarge power occupied by the heating system.
Description
technical field [0001] The invention relates to the technical field of PTC heaters, in particular to a current-limited startup control system for PTC heaters. Background technique [0002] Electric heaters using PTC ceramic heating elements have the characteristics of self-constant temperature, no redness, and no open flames. Even in the absence of ventilation and heat dissipation, fires can still be avoided when dry burning occurs, so PTC electric heaters are widely used. [0003] Due to the characteristics of the PTC material itself, its resistance value changes with the ambient temperature: the lower the temperature, the smaller the resistance, and the higher the temperature, the greater the resistance. When used as an electric heater, at the beginning of power-on start-up, due to the low temperature of the material and small resistance, a large current impact will occur; after power-on and start-up, the material will heat up, and the resistance will increase and the curr...
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IPC IPC(8): H05B1/02
CPCH05B1/02H05B1/023Y02E10/72
Inventor 谢运伟邱龙飞尹俊川明培王东郑平
Owner DEYANG ZHIKE ELECTRONICS