A thyristor rectifier is a rectification device that utilizes the semiconductor principle of silicon to convert alternating current into direct current. It has the advantages of high rectification efficiency, wide voltage regulation range, stable current, no noise, high power, small size, easy operation, and easy maintenance. It has been widely used in electrolysis, electroplating, wire wound motor cascade speed regulation, DC motor speed regulation, intermediate frequency power supply, charging machine, general silicon rectification, motor excitation and other fields.
Key words：
This device serves as a copper electrolysis power supply, using thyristors as valve components, water cooling, and a dry-type self cooling rectifier transformer. The AC power supply adopts a three-phase 380V input, cabinet structure, front and rear doors, and the DC output terminal is located at the back of the cabinet. The positive and negative outputs are clearly marked. The front panel of the cabinet is equipped with DC indicator instruments, signal lights, and operation buttons. The core control component is the BDKC microcontroller multifunctional thyristor trigger board, which adopts a single board structure (255mm × 170mm), with high integration, few peripheral wiring, simple debugging (only need to debug overcurrent and overvoltage points), good pulse balance, strong anti-interference ability and other advantages. Specifically, it has the following characteristics:
● Using the INTEL51 series microcontroller as the core control processor, this board adopts a single board structure, fully isolated input and output, and assists other imported devices, making it highly anti-interference and suitable for various harsh environments.
● It has overcurrent and overvoltage protection functions, and has a protective relay output. During protection, the relay contacts are closed, and the trigger pulse is pulled to the inverter area (the trigger pulse can be blocked according to user requirements). Users can connect the sound and light alarm system externally by protecting the relay contacts.
● Triggered as a dual column pulse train, reliable triggering, high power, and wide phase shift range. Can reliably trigger all qualified thyristors.
● No need for an external synchronous transformer, automatic phase sequence identification. Almost no need for debugging.
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FAQ
Here, common questions are answered and clarified
Voltage fluctuation fault
● Youdaoplaceholder6 Common causes:
- The external power supply is unstable or abnormal.
- There is a wiring error during the operation of the equipment.
- Environmental factors (such as temperature changes) cause voltage fluctuations.
● Solve the problem:
- Use a reliable power supply and avoid relying on external power sources.
- Check and adjust the connection method of the equipment.
- Reserve sufficient protection circuits or use step-down circuits to limit the impact of voltage fluctuations.
Short-circuit fault
● Youdaoplaceholder6 Common causes:
- Internal circuit short circuit (such as coil damage).
- External short circuit (such as short-circuiting of power pins).
● Solve the problem:
- Inspect the internal structure of the equipment, identify and repair the short-circuit points in the internal circuits.
- Use disconnected pins or external pins for protection and isolation.
- Reserve sufficient buffer layers or cooling systems to prevent the silicon wafers from overheating and getting damaged.
Current out-of-control (IQN) fault
● Youdaoplaceholder6 Common causes:
- The external current is too large, causing the silicon wafer to bear an excessively high current.
- During the operation of the o equipment, the load was too heavy, causing the silicon wafers to be overloaded.
● Solve the problem:
- Reserve sufficient safety current to ensure that the current during equipment operation does not exceed the designed maximum value of the silicon wafer.
- Use protection circuits or step-down circuits to limit the influence of external currents.
- Reserve sufficient buffer layers to prevent excessive current from damaging the silicon wafer.
Excessively high temperature fault
● Youdaoplaceholder6 Common causes:
- High-temperature environments cause silicon wafers to expand due to heat and get damaged.
- The cooling system failed to effectively cool the silicon wafers.
● Solve the problem:
- Reserve sufficient buffer layers or cooling systems to prevent the silicon wafers from overheating and getting damaged.
- Use a heat sink or coolant (such as water) to lower the temperature of the silicon wafer.
- Regularly inspect and maintain the cooling system of the equipment.
Overload fault
● Youdaoplaceholder6 Common causes:
- During the operation of the equipment, the load was too heavy, causing the silicon wafers to bear excessive current.
- If the external load exceeds the design maximum value of the silicon wafer, it may cause damage to the silicon wafer.
● Solve the problem:
- Reserve sufficient safety load to ensure that the load during equipment operation does not exceed the design maximum value of the silicon wafer.
- Use protection circuits or step-down circuits to limit the influence of external loads.
- Reserve sufficient buffer layers to prevent the silicon wafer from being damaged due to excessive load.
Summary of Solutions for Current Anomaly (IQN) Faults
● Test with a volt-ampere meter: Measure the output voltage and current to ensure they meet the design parameters of the silicon wafer.
● Apply phase difference test: Check the phase deviation of the silicon wafer to ensure its stability in AC signals.
● Dynamic calibration equipment: Dynamically adjust the equipment or external power supply according to the actual working environment (such as temperature changes).
Through regular Testing and Diagnosis processes, faults of thyristor equipment can be identified and resolved more accurately.
Certification
It has passed the ISO9001:2015 quality management system certification. In 2005, it was awarded the titles of "National Rectifier Product Quality Assurance and Honest Business Demonstration Unit" and "National AAA Quality Brand Enterprise" by the China Marketing Association. It has been rated as a "Contract-abiding and Creditworthy Enterprise" by the Wuhan Administration for Industry and Commerce for many years.
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Factory
The total number of employees in the unit, including the situation, number and composition ratio of technical personnel at all levels, currently has over 60 employees, including more than 18 engineering and technical personnel. Among them, there are 4 senior engineers, 10 engineers, and 4 assistant engineers and technicians.
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As a designated manufacturer of rectifiers by the former Ministry of Machinery Industry, we specialize in the production of electrolytic and electrochemical rectifiers. We have numerous production achievements and rich manufacturing experience in the electrolytic copper industry.