Description
Shandong Fuda Transformer Co., Ltd. is a professional manufacturer of 10KV-35KV-110KV-220KV transformers and high and low voltage distribution cabinets. The capacity of oil immersed transformers is 50KVA-150000KVA, and the capacity of dry type transformers is 50KVA-10000KVA. Our main products include oil immersed transformers, dry type transformers, amorphous alloy transformers, distribution transformers, power transformers, broadband transformers, three-dimensional coil iron core transformers, rectifier transformers, and furnace transformers, Special purpose transformers, high and low voltage distribution cabinets, and transformers produced by our factory are exported to many countries such as Canada, Iran, Ethiopia, Ghana, Cambodia, Laos, Cambodia, Russia, India, Tanzania, Pakistan, etc. We can also design and produce maximum quantities to meet customer needs according to customer technical requirements, which is our goal.
In the chemical industry where rectifier transformers are the most common, high-power rectifier devices also have low secondary voltage and high current. Therefore, they are similar to electric furnace transformers in many aspects, including the structural characteristics mentioned earlier, and rectifier transformers. The biggest characteristic of rectifier transformers is that the secondary current is no longer sinusoidal. Due to the unidirectional conduction characteristics of subsequent rectifier components, each phase line is no longer the same, and the current has load current but soft current conduction. The pulsating current in one direction is converted into direct current through filtering devices. The secondary voltage and current of rectifier transformers are not only related to the capacity connection group, such as commonly used three-phase bridge rectifier lines and rectifier lines with dual inverters and balanced reactors, For the same DC output voltage and current, the secondary voltage and current required for the rectifier transformer are different. Therefore, the parameter calculation of the rectifier transformer is based on the rectifier line, and generally, the parameter calculation is calculated from the secondary side to the primary side.
Due to the fact that the winding current of the rectifier transformer is non sinusoidal and contains many higher-order harmonics, in order to reduce harmonic pollution to the power grid and improve power factor, it is necessary to increase the pulse number of the rectifier equipment, which can be solved through phase shifting. The purpose of phase shifting is to cause a phase shift between the same terminal line voltage of the secondary winding of the rectifier transformer.
Working principle of rectifier transformer
In the chemical industry where rectifier transformers are most commonly used, high-power rectifier devices also have low secondary voltage and high current. Therefore, they are similar to electric furnace transformers in many aspects, including the structural characteristics mentioned earlier, and rectifier transformers. The biggest characteristic of rectifier transformers is that the secondary current is no longer sinusoidal. Due to the unidirectional conduction characteristics of subsequent rectifier components, each phase line is no longer the same, and the current has load current but soft current conduction. The pulsating current in one direction is converted into direct current through filtering devices. The secondary voltage and current of rectifier transformers are not only related to the capacity connection group, such as commonly used three-phase bridge rectifier lines and rectifier lines with dual inverters and balanced reactors, For the same DC output voltage and current, the secondary voltage and current required for the rectifier transformer are different. Therefore, the parameter calculation of the rectifier transformer is based on the rectifier line, and generally, the parameter calculation is calculated from the secondary side to the primary side.
Due to the fact that the winding current of the rectifier transformer is non sinusoidal and contains many higher-order harmonics, in order to reduce harmonic pollution to the power grid and improve power factor, it is necessary to increase the pulse number of the rectifier equipment, which can be solved through phase shifting. The purpose of phase shifting is to cause a phase shift between the same terminal line voltage of the secondary winding of the rectifier transformer.
Complaint
