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相信很多朋友对什么是变频器一直不是很清楚。今天专业变频器厂家bat365在线中国官网登录入口的沈工程师。就带大家了解一下变频器的工作原理具体是怎么样的。
I believe that many friends have not been very clear about what inverter is. Today, engineer Shen from Bongrui. Let's take a look at the working principle of the frequency converter.
首先简单的说呢。变频器的主要作用就是将交流电经过电容器滤波逆变为直流电，然后再转换所需要的电流频率以提供给设备工作使用。一般是由中央芯片中心输出信号通过驱动电路，控制输出模块输出三相交流电。一般的直流电源大多是由交流电源通过变压器变压，整流滤波后得到的。很多人会好奇为什么变频器使用量和使用范围这么广？要知道交流电源在人们使用电源中占总使用电源的95%左右。
First of all, let's make it simple. The main function of frequency converter is to invert alternating current into dc current through capacitor filtering, and then convert the required current frequency to provide equipment for use. Generally by the central chip center output signal through the drive circuit, control output module output three-phase ac. The general DC power supply is mostly obtained by ac power supply through transformer transformer, rectification and filtering. Many people will be curious why frequency converter usage and use so wide range? We should know that ac power supply accounts for about 95% of the total power supply in people's use.
变频器的作用：
1，调整电机加减速时间长短和电机运行力矩大小。另外，变频器还有很多的保护功能。如滤波、逆变、过流、过压、过载保护等等。随着工业自动化程度的不断提高，变频器也得到了非常广泛的应用。
Function of frequency converter: adjust motor acceleration and deceleration time and motor running torque size. In addition, the frequency converter has many protection functions. Such as filtering, inverter, overcurrent, overvoltage, overload protection and so on. With the continuous improvement of industrial automation, frequency converter has been widely used.
2，变频器的作用：变频器起到变频节能。变频器调整输出电源的电压和频率，根据电机的实际需要来提供其所需要的电源电压，进而达到节能、调速的目的
2, the role of frequency converter: frequency converter to energy saving. The frequency converter adjusts the voltage and frequency of the output power supply, and provides the required power supply voltage according to the actual needs of the motor, so as to achieve the purpose of energy saving and speed regulation
变频器的应用领域
1，电气伺服传动领域 在要求速度控制和位置控制的场合，特种电机的应用越来越广泛。开关磁阻电动机、永磁无刷直流电动机、步进电动机、永磁交流伺服电动机、永磁直流电动机等都已在数控机床、工业电气自动化等方面。
Frequency converter application field
1. In the field of electric servo drive, the application of special motors is more and more widely in the occasions requiring speed control and position control (servo). Switched reluctance motor, permanent magnet brushless DC motor, stepper motor, permanent magnet AC servo motor, permanent magnet DC motor and so on have been in CNC machine tools, industrial electrical automation
2，变频器在自动化系统中应用非常广泛。石油输油泵、电潜泵，钢铁轧机、风机泵等。冶金行业、自动送料建筑、矿业设备，交通运输领域，造纸业，电子制造业等领域都是必备设备组件。
2. Frequency converters are widely used in automation systems. Oil pump, electric submersible pump, steel mill, fan pump, etc. Metallurgical industry, automatic feeding construction, mining equipment, transportation, paper industry, electronic manufacturing and other fields are essential equipment components.
3，家用电器领域 ，据有关数据统计显示：一般家庭中约使用 50~100 台特种电机。如目前流行的高效节能变频空调和冰箱就采用永磁无刷直流电动机驱动其压缩机及风扇。洗衣机采用低噪声多极扁平永磁无刷直流电动机，可省去原有的机械减速器而直接驱动滚筒，实现无级调速，是目前洗衣机中的高档产品。吸尘器中采用永磁无刷直流电动机替代原用的单相串励电动机，具有体积小、效率高、噪声低、寿命长等优点。
3. In the field of household appliances, about 50~100 special motors are used in the average family. For example, the current popular high efficiency and energy saving frequency conversion air conditioning and refrigerator use permanent magnet brushless DC motor to drive its compressor and fan. The washing machine adopts low-noise multi-pole flat permanent magnet brushless DC motor, which can directly drive the drum without the original mechanical reducer and realize stepless speed regulation. It is a high-grade product in the current washing machine. Permanent magnet brushless DC motor is used in vacuum cleaner instead of single-phase series motor, which has the advantages of small volume, high efficiency, low noise and long service life.
4，实现电机软启动。保护点击设备安全运行
4, achieve motor soft start. Protect click devices for safe operation
5，特殊领域。比如各种飞行器、探测器、自动化装备、医疗设备等使用的电机多为特种电机或新型电机。
5. Special fields. For example, all kinds of aircraft, detectors, automation equipment, medical equipment and other motor used for special motor or new motor
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