- #1
goodphy
- 216
- 8
Hello.
Please looks at the attached image first.
The left image is LCC impedance matching network (one of T-type impedance matching networks) and the right is the corresponding equivalent circuit when CT and CL are adjusted such that an equivalent impedance of the sub-circuit surrounded by dashed-line becomes RS.
You don't need to take care of what ZL really is, that was not important for my question I would like to ask you here. In the left circuit, there is only one resistance, RL, located in ZL so that's the only point that a real power (active power) is consumed. But in the right, Zeq itself is a purely resistive. In order to make sense in terms of power consumption, a real power at Zeq, I2Zeq = I2RS is same to I12RL, I think. But..RL can be a lower than RS and I1 is lower than I. As a result, two consumed powers are not equal.
How can I solve this apparent contradiction? I think reactive powers for reactive components have some role to match these two power. For example, reactive components receive power over a quarter cycle and release it to the RL for another quarter cycle, not to the source. But I don't know how such an energy flow occurs.
Could you please help to clarify this?
Please looks at the attached image first.
The left image is LCC impedance matching network (one of T-type impedance matching networks) and the right is the corresponding equivalent circuit when CT and CL are adjusted such that an equivalent impedance of the sub-circuit surrounded by dashed-line becomes RS.
You don't need to take care of what ZL really is, that was not important for my question I would like to ask you here. In the left circuit, there is only one resistance, RL, located in ZL so that's the only point that a real power (active power) is consumed. But in the right, Zeq itself is a purely resistive. In order to make sense in terms of power consumption, a real power at Zeq, I2Zeq = I2RS is same to I12RL, I think. But..RL can be a lower than RS and I1 is lower than I. As a result, two consumed powers are not equal.
How can I solve this apparent contradiction? I think reactive powers for reactive components have some role to match these two power. For example, reactive components receive power over a quarter cycle and release it to the RL for another quarter cycle, not to the source. But I don't know how such an energy flow occurs.
Could you please help to clarify this?