Selection of Transformers for CPSY UPS Power Products

Selection of Transformers for CPSY UPS Power Products

1. Transformers used in UPS uninterruptible power supply products are roughly divided into the following categories according to their functions:

①Power transformers: According to the purpose, they are inverter transformers, autotransformers, switching power transformers, etc.

②Pulse transformers, trigger transformers, drive transformers such mainly used in power control circuits.

③Filter inductors, EMI filter inductors, noise suppression inductors, energy storage inductors, saturation inductors, etc.

④ Current transformers, voltage transformers, Hall current and voltage detectors, etc.: mainly used for detection circuits and equipment.

2. Transformer magnetic materials used in UPS power products mainly include silicon steel, soft ferrite, amorphous alloy, etc.

3. Power inverter

The circuit is isolated by a power frequency transformer, which mainly plays the role of insulation and power conversion. The main transformer and filter inductor are large and heavy. However, it can be made of low-frequency materials and is inexpensive. Most magnetic materials are made from stacks of cold-rolled oriented silicon steel E-type punched sheets,

4. Technical and raw material requirements for electronic transformer UPS power supply

1) For all electronic transformers, it is hoped that on the premise of ensuring basic performance, try to improve efficiency, reduce cost, and reduce weight.

2) Magnetic materials require good stability, including the consistency and stability of magnetic materials and finished products.

3) Power transformers and inductors should be designed to improve bias resistance.

4) The selection, production, inspection, and other links of products must be strictly checked to stabilize the quality of the products.

5) Ensure that there are advanced raw material and finished product inspection methods and necessary processes to ensure product quality.

6) Immediately communicate with the complete machine manufacturer and keep close contact with the technicians. Timely, correct guidance must be provided right from the start of product design.

7) Provide advanced material process information to technicians throughout the machine manufacturer.

8) Different power products have corresponding special requirements for the appearance and structure of electronic transformers. At the same time, under the premise of ensuring product quality, transformer products should also achieve the smallest possible size and weight.

9) Any product must have a reasonable profit to develop well. As a power supply company, electronic transformer companies do not want electronic transformers companies to maintain market share through price competition. Upstream and downstream companies should share market risks through dialogue. . Only on the premise of ensuring quality can we develop together.

5. Problems in the use

1) The discreteness of some products is large, which reduces the performance of the whole machine.

2) Due to factors such as rising raw material prices, manufacturers choose insufficient margins when designing products, which will cause the products to easily rise in temperature and reduce load capacity.

3) Transformers and inductors are noisy.

4) Sometimes the pressure resistance does not meet the requirements.

5) Electronic transformer products age quickly.

6) The supplier's product design will change the material properties so that it cannot meet the design requirements.

6. special requirements

1) Transformer products need small batches, parameter changes, and fast delivery requirements in the trial production stage.

2) Products with special needs have requirements in terms of conversion efficiency, volume, frequency response range, insulation level, and high temperature and humidity resistance.

3) At present, there are many customized products and there will be different demands, so it is necessary to ensure the supply speed of product quality.