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公司：漳州风云电气设备有限公司

VT130G3U-4160控制电路:电流调节器、速度调节器控制电路:检测电路
申流反馈环节:中霍耳元件及运算放大器组成，用以检测可控硅直流侧的电流信号。
速度反馈环节:把测速发电机输出电压变换为适合控制系统的电压信号。

VT130G3U-4160调压调速原理
□定子供电频率不变时，异步电动机的电磁转矩
与输入电压有效值的平方成正比，利用交流调压电路，可以达到调速目的。
口实际系统由，必须能控制异步电动机正、反向运转，一般可在主电路中串入两个接触器来改变供电电压相序。

VT130G3U-4160保护系统口过流保护
三相调压器的最大输出电流可由电流调节器的设定值来限制。将速度调节器的最大输出值与电流变换器最大电流时的反馈量调至相等，即可实现限流。晶闸管因短路产生的过流由快速熔断器来保护。

VT130G3U-4160 control circuit: current regulator, speed regulator control circuit: detection circuit
Current feedback link: composed of middle Hall element and operational amplifier, it is used to detect the current signal on the DC side of SCR.
Speed feedback link: converting the output voltage of tachogenerator into a voltage signal suitable for the control system.

Principle of VT130G3U-4160 voltage regulation and speed regulation
□ Electromagnetic torque of asynchronous motor when the stator power supply frequency is constant.
It is proportional to the square of the effective value of the input voltage, and the purpose of speed regulation can be achieved by using AC voltage regulating circuit.
The actual system must be able to control the forward and reverse operation of the asynchronous motor. Generally, two contactors can be connected in series in the main circuit to change the phase sequence of the supply voltage.

Overcurrent protection at the port of VT130G3U-4160 protection system
The maximum output current of the three-phase voltage regulator can be limited by the set value of the current regulator. By adjusting the maximum output value of the speed regulator to be equal to the feedback value of the current converter at the maximum current, current limiting can be realized. The overcurrent caused by short circuit of thyristor is protected by fast fuse.

VT130G2U4750

VT130G2U4750

VT130G2U4750

VT130G2U4750

VT130G2U4750