Average vs RMS Voltage in Power Electronics: Rectifier Diodes, Non-Zero Mean Values & Applications

I will ask a basic question:

We have something like RMS and average voltage. For sinusoidal voltage, the average value is 0, so something like effective value has been introduced. I am currently reading literature in the field of power electronics (more specifically - the section of rectifiers) and I noticed that there is more operation on average values, which are not necessarily zero, although effective values can be calculated as well. Why are the mean values more effective than effective in such cases? For example, in the catalog data of the rectifier diode we have the average current (not effective).

Does it have to do with the fact that since the average value can be non-zero then it is more convenient to use this concept or does it have any other practical justification?

After rectifying the voltage, the mean and effective value is equal, as there is no alternating waveform, no constant waveform.
The RMS voltage or current is nothing but the average value of the waveform module.

The diode lets current in one direction, so the average and effective value will be equal again.

_lazor_ wrote:

After rectifying the voltage, the mean and effective value is equal, as there is no alternating waveform, no constant waveform.

Not true. This is a variable-periodic waveform - not constant.

_lazor_ wrote:

The RMS voltage or current is nothing but the average value of the waveform module.

Not true - I advise you to look at the definition.

_lazor_ wrote:

The diode lets current in one direction, so the average and effective value will be equal again.

It won't be equal - come back to the definition.
Under the text of a colleague Jazor is an interesting remark: I want to do it, but I will not read anything about it.

Quote:

For sinusoidal voltage, the average value is 0, so something like effective value has been introduced.

For runs whose mean value is zero, the absolute mean value (straightened mean) is determined.

So average or effective? choose the one that better describes the phenomenon.

Quote:

For example, in the catalog data of the rectifier diode we have the average current (not effective).

The diode has a forward voltage that is not dependent on the current, so if you want to calculate the power loss in a diode, the average current is multiplied by the forward voltage. To calculate the static power loss in the MOSFET transistor, the square of the RMS current is multiplied by the resistance Rds (on).

Well that's true, my statement was not in line with the definition.
Absolute mean value = 0.637
RMS = 0.707 (3 decibels )
for a sinusoidal waveform

The effective value "0.707" is only a parameter for "pure" sinusoidal waveform and resistive load.
TRUE RMS is also used for the distorted waveform. This value is calculated with the integration of instantaneous values of the deformed waveform.

The effective value goal is to calculate the energy generated in the resistance receiver.
An effective value cannot be used for the diode.