Intelligent electric power regulator and method for uniformly allocating power thereof

Abstract

The invention relates to an intelligent electric power regulator and a method for uniformly allocating power. The power regulator comprises a microprocessor, an input device, an output device and a TCP / IP protocol-based bidirectional communication interface, wherein the input device and the output device are connected with the microprocessor; the input device comprises an analogue input interface circuit, a load current detection circuit and a radiator temperature detection circuit; the analogue input interface circuit is connected to an input port and connected with an intelligent instrument; the output device comprises a thyristor and a driving module of the thyristor; the communication interface module comprises an Ethernet controller, a physical layer interface and an optical fiber communication interface; the micro-processor is also connected with a load current detection module and an overload and short circuit protection module; and the power regulator realizes uniform allocation of load power as well as soft start and switch-off functions by adopting a power adjusting algorithm. The power regulator can run alone as well as run together with other power regulators in a network, realize remote communication control and prolong the service life of a heating element, and has a compact structure, low system cost and high control accuracy.

Description

technical field [0001] The invention relates to a network type power control device, in particular to an intelligent power power regulator and a method for evenly distributing power thereof, which are used for temperature control of electric heating devices in industries such as machinery, chemical industry and heat treatment. Background technique [0002] Among various equipment that uses electricity as the energy source for heating equipment for temperature control, the most commonly used is a power regulator or a power regulating device that uses a thyristor as a power control device. [0003] There are various forms of electric power regulation, and the commonly used methods are: (1) Time-proportional trigger control: Although the trigger circuit is relatively simple in this way, the control accuracy is low, the temperature overshoot is large, and some production processes do not allow it. (2) Phase-shift trigger control of reference voltage comparison: Although the cont...

AI Technical Summary

Problems solved by technology

Although the communication method is simple and easy to implement, it has disadvantages such as low speed, short communication distance, and few devices that can be connected.

[0006] In addition, in some electric heating systems, the insulating material between the heating element (electric furnace wire, silicon carbide rod, silicon molybdenum rod, etc.) itself and the furnace wall will affect its service life and Reduce the insulation strength, or due to the fracture or expansion of the heating element, the oxidation and peeling off of the metal layer of the reactor, etc., often cause a short circuit, and easily damage the power control components (such as thyristors, IGBT components, etc.). Bring huge difficulties, directly affect the stability and security of system operation

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