变频器在许多电气设备中是必不可少的组件，像配电柜，控制柜，一些电气控制柜中，都有有变频器的存在。

Frequency converters are essential components in many electrical equipment, such as distribution cabinets, control cabinets, and some electrical control cabinets.

接下来，跟着高低压成套电气设备厂家一起了解一下变频器的控制电路的组成与相关特性：

Next, let's follow the manufacturers of high and low voltage complete electrical equipment to understand the composition and related characteristics of the control circuit of the frequency converter:

变频器控制电路由这些电路组成：频率、电压的运算电路、主电路的电压、电流检测电路、电动机的速度检测电路、将运算电路的控制信号进行放大的驱动电路，以及逆变器和电动机的保护电路。

The frequency converter control circuit consists of these circuits: frequency and voltage calculation circuit, voltage and current detection circuit of the main circuit, speed detection circuit of the motor, driving circuit that amplifies the control signal of the calculation circuit, and protection circuit of the inverter and motor.

变频器驱动电路的HCPL-316J特性：

HCPL-316J characteristics of frequency converter drive circuit:

兼容CMOS/TYL电平；光隔离，故障状态反馈；开关时间500ns；“软”IGBT关断；欠饱和检测及欠压锁定保护；过流保护功能；宽工作电压范围(15～30V)；用户可配置自动复位、自动关闭。 DSP与该耦合器结合实现IGBT的驱动，使得IGBT VCE欠饱和检测结构紧凑，低成本且易于实现，同时满足了宽范围的与调节需要。

Compatible with CMOS/TYL levels; Optical isolation and fault status feedback; The maximum switching time is 500ns; "Soft" IGBT shutdown; Undersaturation detection and undervoltage locking protection; Overcurrent protection function; Wide operating voltage range (15-30V); Users can configure automatic reset and automatic shutdown. The combination of DSP and this coupler realizes the driving of IGBT, making the IGBT VCE undersaturation detection structure compact, low-cost, and easy to implement, while meeting a wide range of safety and regulation needs.

多年来，我们一直致力于电力电气配套设备生产，生产工艺，检测手段完善，可以针对不同行业自动化控制需求提供不同的技术服务和解决方案。

For many years, we have been committed to the production of power and electrical supporting equipment, with advanced production processes and complete testing methods. We can provide different technical services and solutions for automation control needs in different industries.

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This article is dedicated to the friendship of Shandong Electric. For more information, please click: http://www.tongyuhengcheng.com Sincere attitude. We will provide you with comprehensive service. We will gradually contribute more relevant knowledge to everyone. Stay tuned