What's PG card in variable frequency drive?
PG is short for Pulse Generator, generally it is used for measuring rotational speed. The most common PG card is optical encoder.
PG card is a part of vector variable frequency drive, to convert the encoder different form signals to suitable for the controller, like: electrical level conversion, analog digital conversion, optical isolation, etc.
Vector control variable frequency drive is a high-performance drive which can be comparable with DC converter.
In the vector control, it requires a motor speed feedback to the variable frequency inverter drive, this speed feedback is achieve by adding a rotary encoder (PG) to the motor, which means PG card feedback vector control VFD. In order to simplify the system, the feedback can be formed by operation of the inverter output signal, this control is called none PG card feedback vector control VFD, the performance has a slight gap than PG card feedback, but configuration is simple.
PG card is a part of vector variable frequency drive, to convert the encoder different form signals to suitable for the controller, like: electrical level conversion, analog digital conversion, optical isolation, etc.
Vector control variable frequency drive is a high-performance drive which can be comparable with DC converter.
In the vector control, it requires a motor speed feedback to the variable frequency inverter drive, this speed feedback is achieve by adding a rotary encoder (PG) to the motor, which means PG card feedback vector control VFD. In order to simplify the system, the feedback can be formed by operation of the inverter output signal, this control is called none PG card feedback vector control VFD, the performance has a slight gap than PG card feedback, but configuration is simple.
You may also like:
You can build it all in MagNet using the circuit position controlled switch. You will have to use motion analysis in order to use the position controlled switches. You can also use the back EMF information to ...
I tell customers that at least 50% of the design effort is the layout and routing by someone who knows what they are doing. Layer stackup is very critical for multiple layer designs. Yes, a solid design is ...
The owner of the system should provide clear requirements of what the system should do and should define what constitutes "maintainability" of the system. This places a burden on the owner of the system to ...
The noise level created by the motor at any speed is in a fixed environment, take two motors same HP, Speed, Enclosure, and the applied voltage could be a factor of the noise, the installed conditions of a ...
We are frequently changing tap position of Unit station transformer due to voltage problem. What are the impacts on transformer life and is there any solution to minimize this?
Gozuk Blog: all about electric motor control & drives industries development in energy saving applications.Featured
Like pumps, fans consume significant electrical energy while serving several applications. In many plants, the VFDs (variable ...
A frequency inverter controls AC motor speed. The frequency inverter converts the fixed supply frequency (60 Hz) to a ...
Motor starter (also known as soft starter, motor soft starter) is a electronic device integrates soft start, soft stop, ...
Soft starter allows the output voltage decreases gradually to achieve soft stop, in order to protect the equipment. Such as the ...
Soft Starter reduces electric motor starting current to 2-4 times during motor start up, reduces the impact to power grid during ...
A frequency inverter controls AC motor speed. The frequency inverter converts the fixed supply frequency (60 Hz) to a ...
Motor starter (also known as soft starter, motor soft starter) is a electronic device integrates soft start, soft stop, ...
Soft starter allows the output voltage decreases gradually to achieve soft stop, in order to protect the equipment. Such as the ...
Soft Starter reduces electric motor starting current to 2-4 times during motor start up, reduces the impact to power grid during ...
In Discussion
Good electrical power system protection engineer
How do you calculate the required HP/torque for cold applications
Main Pipeline Pump Station: Engineering Facts
A need of change in Solar technology in Rajasthan
Is there a high reliability long life energy storing core?
One stage 130 meter head pump
VFD DBR and Active front end
What packaging is used to ship PV panels to their installation location?
How do you calculate the required HP/torque for cold applications
Main Pipeline Pump Station: Engineering Facts
A need of change in Solar technology in Rajasthan
Is there a high reliability long life energy storing core?
One stage 130 meter head pump
VFD DBR and Active front end
What packaging is used to ship PV panels to their installation location?
