Need Statement
(Not a lot of experience with power electronics, apologies). I need to power a low-voltage halogen lamp (OSRAM 64328 HLX, 65W, Nominal voltage 9.8V, 6.6A) with a 230V AC source. Additionally, I need to have the capability to digitally control the powering of this lamp, which I will probably do with a National Instruments DAQ (so with 0 to 12VDC, and a current of mA).
I need the light source to be as stable as possible. Based on some research, I've seen that an interesting approach is to make use of an LDR to quantify the illumination output of the lamp, and if a deviation or drift is captured, to compensate making use of a PID + digital control to change the voltage provided to the lamp. In my case, in contrast with the paper, I plan to implement the PID directly in the DAQ (and I'm working with a much powerful lamp).
Question
What is the most efficient solution to approach this?
Extra Input
An idea that I have been looking into is to make use of a PWM that can handle the 230V AC and with PWM regulation move around the nominal voltage of the lamp. However I am not really sure how a hardware implementation of this looks like, if possible.
I also imagine that a weakness of this approach might be that the LDR could saturate easily with such a powerful lamp, so hopefully I will find one that can work with this illumination without saturating. I am mainly interested in the NIR output of the lamp, so a InGaAs LDR seems to be the way to go. The LDR would be located in a dark container, were the lamp is the only source.
Thank you all in advance for your time and input!
(Not a lot of experience with power electronics, apologies). I need to power a low-voltage halogen lamp (OSRAM 64328 HLX, 65W, Nominal voltage 9.8V, 6.6A) with a 230V AC source. Additionally, I need to have the capability to digitally control the powering of this lamp, which I will probably do with a National Instruments DAQ (so with 0 to 12VDC, and a current of mA).
I need the light source to be as stable as possible. Based on some research, I've seen that an interesting approach is to make use of an LDR to quantify the illumination output of the lamp, and if a deviation or drift is captured, to compensate making use of a PID + digital control to change the voltage provided to the lamp. In my case, in contrast with the paper, I plan to implement the PID directly in the DAQ (and I'm working with a much powerful lamp).
Question
What is the most efficient solution to approach this?
Extra Input
An idea that I have been looking into is to make use of a PWM that can handle the 230V AC and with PWM regulation move around the nominal voltage of the lamp. However I am not really sure how a hardware implementation of this looks like, if possible.
I also imagine that a weakness of this approach might be that the LDR could saturate easily with such a powerful lamp, so hopefully I will find one that can work with this illumination without saturating. I am mainly interested in the NIR output of the lamp, so a InGaAs LDR seems to be the way to go. The LDR would be located in a dark container, were the lamp is the only source.
Thank you all in advance for your time and input!