590/0350/5/1/3/2/0/0/0000/000/000 直流调速器

590/0350/5/1/3/2/0/0/0000/000/000

590/0350/5/1/3/2/0/0/0000/000/000 working principle of dc speed regulator is, by changing the duty ratio of output pulse, to change the dc motor armature dc voltage, to adjust the speed of motor. The governor judges the speed of the DC motor according to the size of the feedback current, and will correct the voltage to the DC motor armature if necessary to achieve the purpose of correcting the speed of the DC motor.

590/0350/5/1/3/2/0/0/0000/000/000 in particular, when the ac input voltage and load current is obtained by after rectifying, filtering smoothing dc power supply, and then by the power amplifier needed to transform pulsating direct current for the square wave frequency and amplitude, Then through the inverter circuit to invert the square wave into the required alternating current to control the speed of the AC motor.

590/0350/5/1/3/2/0/0/0000/000/000 in addition, six pulse dc speed regulator usually adopts three-phase thyristor rectifier (also known as “SCR”), but this way of rectifier harmonic is produced. Therefore, in actual use, it is necessary to choose the appropriate DC governor and rectification mode according to the actual situation of the system to achieve better control effect.

000/000 590/0350/5/1/3/2/0/0/0000 / dc speed governor of rectifying ways mainly have the following kinds:

Uncontrolled rectification: Use uncontrolled rectifiers, such as diode rectifiers, to convert alternating current to direct current. This method is simple and reliable, but it will produce large harmonics.
Phase-controlled rectifier: By controlling the trigger Angle of the rectifier to adjust the output voltage, so as to achieve the speed regulation of the DC motor. This method can reduce the influence of harmonics, but requires a more complex control circuit.
Chopper: By continuously switching on and off the DC power supply, the average DC voltage is controlled, so as to adjust the speed of the DC motor. This way is simple to adjust, but has a greater impact on the motor.
Pulse width modulation (PWM) : By adjusting the duty cycle of the PWM signal to adjust the average DC voltage, so as to control the DC motor speed. This method has high adjustment precision, but it requires higher control circuit.

590/0350/5/1/3/2/0/0/0000/000/000 in actual application, need according to the system of the actual situation to choose the right means of rectifier, in order to achieve better control effect.