Brief introduction of transformer transformation ratio
Writer： Hengfeng you electric Time：2023-04-14 views：times
Transformer technical parameters are an important goal to understand the transformer. If you want to use the transformer, you must understand its parameters, so that you can use it without problems. Therefore, it is very important for novices engaged in transformer to understand and analyze the parameters of transformer. The following is my understanding of transformer parameters.
Transformer ratio configuration criteria:
Many factors should be considered in the selection of traditional transformer ratio. First of all, the operation requirements of the power grid and the agreements and regulations of the power system should be taken into account, which should not only maintain the stability of the power system operation, but also ensure that the system operation loss is small;
It is not necessary to consider the specific needs and requirements of power users and confirm the required voltage according to the actual situation and operation mode; Finally, the transformation ratio of the required transformer is proved. With the continuous development and utilization of new materials and technologies and the continuous improvement of power insulation level, the traditional selection methods are not only undergoing new tests, but also constantly changing and participating in new factors.
There are corresponding technical description requirements for different types of transformers, which can be indicated by corresponding technical description parameters. For example, the primary technical description parameters of power transformer include: additional power, additional voltage and voltage ratio, additional frequency, working temperature grade, temperature rise, voltage adjustment rate, insulation function and moisture-proof function. For general low-frequency transformers, the primary technical description parameters are: transformation ratio, frequency characteristics Nonlinear distortion, magnetic and electrostatic shielding, efficiency, etc
Voltage ratio:
The number of turns of the two groups of coils of the transformer is N1 and N2 respectively. N1 is the primary and N2 is the secondary. When an AC voltage is added to the primary coil, the induced electromotive force will be generated at both ends of the secondary coil. When N2 > N1, the induced electromotive force will be higher than the voltage applied by the primary. This kind of transformer is called a step-up transformer: when N2, n is called the voltage ratio (turns ratio). When n < 1, N1 > N2, V1 > V2, The transformer is a step-down transformer. On the contrary, it is a step-up transformer
The above description is provided by Qingdao hengfengyou Electrical Engineering Co.Ltd. for more detailed consultation, please contact: hfy@hengfengyou.com
