SCR Power Controller Cycle Power Regulator

Product Overview

AC Thyristor Power Controller, it's a high-precision electrical control device that uses thyristors (Thyristor/SCR or TRIAC) as its core switching components. It achieves precise, contactless regulation of output power through advanced triggering control technology, making it an indispensable key terminal control device in automatic temperature control systems for industrial electric heating equipment.

Core Operating Principles

The product primarily offers two advanced power control modes:

• Zero-Crossing Triggering (Cycle Control): Regulates the average power by controlling the number of complete AC cycles output within a fixed or variable period. This method outputs intact sine waves, causing minimal grid interference and resulting in a high power factor (cosφ≈1).

• Phase-Shift Triggering: Achieves smooth power control by varying the conduction angle within each sine wave cycle to adjust the voltage.

The principle of its output waveform is illustrated in the figures below:

Main Technical Specifications

• Power Range: Covers a wide series from 10kW to 2500kW​ (e.g., models TG-1-10 to TG-3-2500).

• Supply Voltage: Supports AC 110V, 220V, 380V, and 660V, compatible with fluctuations of 10% to -15%.

• Phase Configuration: Offers various wiring configurations for single-phase, two-phase, and three-phase systems.

• Control Signal: Accepts DC 0~10mA, 4~20mA, 0~5/10V, and logic signal inputs.

• Control Accuracy: Temperature control accuracy reaches 1% or 0.5%.

• Cooling Method: Primarily employs forced air cooling​ to ensure stable operation under high power.

Typical Application Scenarios

Designed for automatic and manual temperature control in various electric heating equipment, typical applications include:

• Industrial resistance furnaces, diffusion furnaces

• Electric heaters, thermostatic baths, ovens

• Melting furnaces

• Suitable for resistive loads such as nickel-chromium, iron-chromium-aluminum, and silicon carbide rods.

Key Product Features

1. High Precision & Intelligence: Utilizes PID or adaptive PID control algorithms to ensure temperature stability with minimal fluctuation.

2. High Reliability: Incorporates fast-acting fuses for overcurrent protection and a comprehensive fault alarm system (audio and visual).

3. High Efficiency & Energy Saving: Boasts an efficiency of up to 99%. As it outputs intact sine waves, it has low self-power consumption and a high power factor.

4. Standardized Construction: Complies with IEC standards, featuring integrated and serialized design for strong versatility.

The block diagram of the core circuit structure is shown below, clearly illustrating its components:

Summary

This AC Thyristor Power Controller is an industrial-grade power management solution that integrates high-precision control, high reliability, and energy efficiency. Its wide power range and flexible control modes enable it to meet various demanding temperature control requirements, from laboratory settings to large-scale industrial sites.

Cooling method: Forced Air Cooling