Hello...
I have some questions about 3-phase rectifiers.
First of all:
1- At the load, the voltage we measure there is a Line Voltage or a Phase Voltage?
2 - Then we have derived the equations for the Load Vavg for Half and Full wave 3-phase rectifiers and I ended up writing this on my notes books:
Half wave
- Not controlled:
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{2\cdot \pi}\cdot Vmax }\)
- Controlled:
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{2\cdot \pi}\cdot Vmax \cdot \cos\left ( \alpha \right )}\)
Full wave
- Not controlled
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{\pi}\cdot Vmax }\)
- Controlled:
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{\pi}\cdot Vmax \cdot \cos\left ( \alpha \right )}\)
But when I read Mohan's Book
and I can't see the relationship between equation 6-36 and the ones I have from my notes book! I mean, why I have one expression in my notes book, and Mohan's book equations are different?
I have some questions about 3-phase rectifiers.
First of all:
1- At the load, the voltage we measure there is a Line Voltage or a Phase Voltage?
2 - Then we have derived the equations for the Load Vavg for Half and Full wave 3-phase rectifiers and I ended up writing this on my notes books:
Half wave
- Not controlled:
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{2\cdot \pi}\cdot Vmax }\)
- Controlled:
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{2\cdot \pi}\cdot Vmax \cdot \cos\left ( \alpha \right )}\)
Full wave
- Not controlled
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{\pi}\cdot Vmax }\)
- Controlled:
\(\displaystyle{VLoad_{avg} = \frac{3\cdot\sqrt{3}}{\pi}\cdot Vmax \cdot \cos\left ( \alpha \right )}\)
But when I read Mohan's Book
and I can't see the relationship between equation 6-36 and the ones I have from my notes book! I mean, why I have one expression in my notes book, and Mohan's book equations are different?