I built a biomass burner which is powered by a blower. For precise control of temperature I am using a PID controller PID500 from a company called selec . I passed the PID analog outuput to a VFD which in turn controlled the speed of a blower powered by a 3 phase motor. Everything is working as expected.
Now I am progressing with building a smaller version of this burner. In this case I am going for a centrifugal blower powered by a single phase motor. The specifications of this blower motor are
- Voltage 230 volts
- Frequency 50hz
- input power 100 watts
- current 0.4 amps
- speed 2400 rpm
- capacitor 2 mfd
I think using a VFD will be an overkill for this small project. As of now I am controlling the blower speed manually using a voltage regulator but we overshoot or undershoot the required temperature.
I want to control this blower motor with analog PID output as in the previous case. I don't want a on/off kind of solution-Please correct me if my understanding is wrong. A proportional modulating control is required as it is good for precise temperature control.
I did my search and was suggested to use a electric digital dimmer control.
Would like suggestions and pointers which will let me get the right solution.