Converter is the general name of three working modes of rectification, countercurrent and frequency conversion, and rectification is one of the most widely used. The characteristic of the rectifier equipment is to output the input AC power to DC after the rectification filter. The rectifier transformer is the power transformer of the rectifier equipment. Most of the industrial rectifier DC power supply is obtained by means of rectifier transformer and rectifier equipment.
Functions of the rectifier transformer:
1. Supply the appropriate voltage to the rectifier system;
2. It is to reduce the pollution of the power grid caused by waveform distortion caused by the rectification system.
3. Harmonic Suppression: By incorporating special winding configurations and using phase-shifting techniques, rectifier transformers help minimize harmonic distortions caused by rectification.
The output of the rectifier transformer is still AC, it only provides power to the rectifier equipment. Usually, the next side connection is star shape and the second side connection is angular shape, which is used to suppress higher harmonics. The corner neutral point of the secondary side connection is not grounded. When the rectifier device is grounded at one point, the device will not be damaged. The ground fault alarm signal is sent through the ground detection device. There is a shielding isolation between the first and second times.
Rectifier transformer is mainly used in electrolysis, smelting, excitation, transmission, cascade speed regulation, electrostatic dust removal and high frequency welding and other fields. The structure has a little difference, in order to smooth the waveform with the rectifier transformer for electrolysis, some are made into six-phase output, and the six-phase rectifier bridge is added outside to get a relatively smooth waveform. Smelting and high frequency welding according to the thyristor rectifier circuit current waveform characteristics and anti-harmonic requirements.
Rectifier transformers come in various types, each designed to suit specific applications and requirements:
Rectifier transformers offer several advantages that make them essential in industrial and commercial applications. Here are some key benefits:
Rectifier transformers are designed to handle high power loads efficiently. Their robust construction and optimized design minimize energy losses during the conversion process, ensuring that a maximum amount of input power is converted to usable DC power. This high efficiency translates to cost savings in energy consumption over time.
By incorporating phase-shifting and multi-pulse configurations, rectifier transformers help reduce harmonic distortions. This results in cleaner and more stable DC output, which is crucial for sensitive applications such as electrochemical processes and precision welding. Improved power quality also reduces wear and tear on connected equipment, extending their lifespan.
Rectifier transformers provide electrical isolation between the high voltage AC supply and the low voltage DC output. This isolation enhances operational safety, protecting both personnel and equipment from electrical faults and potential hazards. Additionally, the robust insulation and cooling systems further ensure safe and reliable operation under various conditions.
The versatility of rectifier transformers makes them suitable for a wide range of applications. Whether it’s for electroplating, DC motor drives, renewable energy systems, or railway traction systems, rectifier transformers can be tailored to meet specific requirements. This adaptability makes them a valuable asset in diverse industrial settings.
Built to endure the electrical and thermal stresses associated with rectification processes, rectifier transformers are highly durable. Their reinforced construction and efficient cooling systems (both oil-cooled and air-cooled variants) ensure they can operate reliably in demanding environments. This durability translates to lower maintenance costs and less downtime, enhancing overall productivity.
Despite their higher initial cost compared to standard transformers, rectifier transformers offer long-term cost benefits. Their high efficiency, durability, and reliability result in lower operational and maintenance costs. Additionally, their ability to provide stable and high-quality power reduces the risk of damage to connected equipment, further contributing to cost savings.
Rectifier transformers can be customized to meet specific voltage and current requirements. This flexibility in design allows for optimal performance in various applications. Whether it's adjusting the number of pulses in multi-pulse transformers to minimize harmonics or choosing the appropriate cooling method for the operating environment, rectifier transformers can be tailored to fit specific needs.
Application of the rectifier transformer are as follows:
1, electrochemical industry
2, traction systems
3. Dc power supply for transmission
4, DC power supply with DC transmission
5, DC power supply for electroplating or electrical processing
6. Dc power supply for excitation
7. Dc power supply for charging
8. Dc power supply for electrostatic dust removal
9. renewable energy
Rectifier transformers are vital components in converting AC to DC, ensuring the smooth and efficient operation of numerous industrial processes. Their ability to handle high power, provide electrical isolation, suppress harmonics, regulate current, and manage thermal loads makes them indispensable in applications ranging from electrochemical processes to renewable energy systems. Understanding the different types and functions of rectifier transformers helps in selecting the right transformer for specific needs, ensuring optimal performance and reliability.
