It is a device that can control the speed of the generator, and at the same time, the electronic governor can also use the controller and the actuator to change the fuel supply of the fuel injection pump according to the received electrical signal. And it can also automatically increase or decrease the engine speed according to the load change of the diesel engine. To put it more bluntly, the electronic governor is an electronic control system of a thyristor voltage regulating circuit. It plays a role in controlling the output voltage by changing the size of the conduction angle of the thyristor. All speed sensing elements or actuators use electrical governors, which are collectively referred to as electronic governors from traditional names, and are widely used in production lines in machinery, printing, packaging, medical and other industries. for speed regulation.
Electronic governor working principle and classification difference 1
Electronic governor classification
1. Analog electronic governor: its controller is usually assembled with analog electronic components;
2. Digital electronic governor: its controller is assembled by digital microprocessor and corresponding peripheral chips;
3. Full electronic governor: The signal sensing and the actuator are all electrical methods, and this equipment has a small working capacity, and is generally used in small diesel engines.
4. Electro-hydraulic or electro-pneumatic governor: The signal monitoring of this type of electronic governor is electronic, but the actuator is hydraulic or pneumatic. It has strong ability in hydraulic or pneumatic servo work, so it also meets the requirements of various diesel engines.
5. Hydraulic-electric double-pulse governor: It is an additional electronic load signal sensing device installed on the ordinary hydraulic governor. The speed sensor is used to adjust the fuel volume with the change of the speed signal. The double-pulse adjustment can adjust the load and also the frequency. It is mainly suitable for diesel generator sets with relatively high power supply requirements.
Electronic governor features
●It has sensitive action, fast response speed, and the time required at the same time only needs to be in the range of 1/10 to 1/2 of the hydraulic governor;
● Whether it is dynamic or static, the accuracy is relatively high;
●It can be beneficial to realize remote control and automatic control;
●Without the speed governor drive mechanism, the installation is relatively simple.
Electronic governor composition
Electronic governor working principle and classification difference 2
How the electronic governor works
The equipment can use the potentiometer to adjust and set the required speed, and then the sensor can measure the actual speed value of the engine through the ring gear on the flywheel, and transmit it to the controller. At the same time, the controller compares the two sets of data. The difference after the comparison will be sorted and amplified by the control circuit, and finally the output shaft of the drive actuator uses the adjusting rod to pull the gear rod of the fuel injection pump, so as to realize the adjustment of the fuel supply and maintain the set speed.
Electronic governor working principle and classification difference three
The difference between electronic governor and variable frequency governor for motor speed regulation.
First of all, the speed regulation of the electronic speed governor is usually carried out by a single-phase motor, and the speed of the motor can be adjusted by changing the resistance and capacitance of its access winding. However, the speed of the power supply will not produce any change in terms of the output of the power supply, so this speed regulation does not belong to an energy-saving speed regulation method.
Secondly, the frequency converter is to connect the power supply that was directly input to the three-phase asynchronous motor to itself first, and at the same time use electronic converter technology such as PWM to rectify and invert the power frequency AC power inside the device, and finally become a A frequency-controlled alternating current is then input into the motor, which means that the current has been processed once. At this time, the frequency is adjusted through V/F control, output torque control and vector control, and then the loop current is changed to achieve the effect of energy-saving operation, especially when the motor is lightly loaded, the energy-saving of the governor will be particularly significant.
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