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Thanks..
i know shifting operation is faster to make division and multiplication.
But shifiting divides and multiplies only by factor of 2,4,8,16,32..etc
So what if I want to diviide by any other random number..like 10 or 100
Hi,
I want to do floating point operations like multiplication, division and square root to calculate PWM duty ratio in dsPIC. I want to do these operations at high frequency.
But I am encountering problems because my dsPIC is not able to do all the floating point computations at high...
If you use very high resistors like I am using 2M and 16.9K then the resistive voltage divider will not consume power.
I think for synchronization detecting 2 phases is enough because once you determine the phase sequence of two of the three phases the third one is easy to figure out because...
Thanks FvM.
The inverter output is sine wave. And I am using sinusoidal PWM to drive the MOSFETs. But what I meant to say is I select which PWM module to operate and which one to shut down depending on whether the square wave is 1 or 0.
Do you have any suggestion for bandpass filter circuit...
What do you mean by the mains impedance? Is that grid impedance?
The ground of the zero crossing circuit is connected to one terminal of the grid voltage.
The zero crossing detector is used to synchronize the positive and negative half cycle PWM signals.
The inverter is supposed to injected...
I am using the following circuit as zero crossing detector to get a square wave from the grid voltage.
But the disturbance coming from the switching current is interfering with the circuit and the square wave is distorted as I increase the input power to the inverter. any ideas how to fix...
I added snubbers to the MOSFET and it is much better now. It is not still working at full power but it will do for now.
Another problem I am having is my inverter works as a stand alone with resistive load but when I connect it to the grid it is not giving output current. when i connected to...
Thanks IanP.
Do I have to use the transformer? If I couldnt get the transformer is it ok if I use just a resistive voltage divider to reduce the grid voltage to 9V?
I am trying to implement a Zero Crossing detector to generate square wave from the grid AC voltage to apply it in an inverter.
Does anyone has any suggestion how to do that?
Thanks
Hi,
I am trying to build a grid connected inverter. And the inverter works at lower dc voltage input levels. I want to increase the voltage up 100V but when I increase the voltage above 20V the gate signals begin to be distorted and the MOSFETs are not switched when they are supposed to.
I...
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