3BHB009884R5211 高压变频器 可以利用降压变压器结构

3BHB009884R5211 高压变频器是一种利用电力半导体器件的通断作用将工频电源变换为另一频率的电能控制装置。它主要用于控制交流高压电动机的转速，以实现调速控制。高压变频器通过改变输出频率和输出电压，从而实现对电动机的调速控制。高压变频器的主要特点包括：整流电路的多重化，脉冲数多达30或36，功率因数高，输入谐波小。模块化设计，结构紧凑，维护方便，增强了产品的互换性。直接高压输出，无需输出变压器。极低的dv/dt输出，无需任何形式的滤波器。采用光纤通讯技术，提高了产品的抗干扰能力和可靠性。功率单元自动旁通电路，能够实现故障不停机功能。3BHB009884R5211 高压变频器适用于大功率风电、水泵的变频调速，可以收到显著的节能效果。按照不同的分类方式，高压变频器可以分为多种类型，如交变变频器和交直交变频器、电流型和电压型变频器、高高变频器和高低高变频器等。其中，高低高变频器的主要原理是利用降压变压器结构，将电网中原有的高压转变为低压，然后通过低压变频器进行变频调速，最后再通过升压变压器将电压恢复到原来的高压水平。

3BHB009884R5211

3BHB009884R5211 high-voltage frequency converter is an electrical energy control device that utilizes the on/off effect of power semiconductor devices to convert a power frequency power supply to another frequency. It is mainly used to control the speed of AC high-voltage motors to achieve speed control. The high-voltage frequency converter achieves speed control of the motor by changing the output frequency and output voltage. The main characteristics of high-voltage frequency converters include: multiple rectification circuits, up to 30 or 36 pulses, high power factor, and low input harmonics. Modular design, compact structure, easy maintenance, and enhanced product interchangeability. Direct high-voltage output without the need for an output transformer. Extremely low dv/dt output, without the need for any form of filter. The use of fiber optic communication technology has improved the product’s anti-interference ability and reliability. The automatic bypass circuit of the power unit can achieve the function of not stopping in case of faults. 3BHB009884R5211 high-voltage frequency converter is suitable for variable frequency speed regulation of high-power wind power and water pumps, and can achieve significant energy-saving effects. According to different classification methods, high-voltage frequency converters can be divided into various types, such as alternating current frequency converters and AC-DC-AC frequency converters, current type and voltage type frequency converters, high high and low high frequency converters, and so on. The main principle of high, low, and high frequency converters is to use a step-down transformer structure to convert the original high voltage in the power grid into low voltage. Then, the low voltage converter is used for frequency conversion and speed regulation, and finally, the voltage is restored to the original high voltage level through a step-up transformer.