Linear & switching mode power regulators and Passive harmonics filter

AI Thread Summary
The discussion highlights the efficiency comparison between Buck Regulators and Linear Regulators, noting that the major weakness of Buck Regulators is not efficiency, contrary to initial assumptions. It also addresses the implications of negative filter reactance in passive harmonics filters, suggesting a relationship to direction. Additionally, the impact of passive filters during off-peak hours in AC traction power systems raises concerns about potential issues, although energy savings are mentioned as a benefit. Participants express confusion about these concepts, indicating a need for further clarification. Overall, the conversation revolves around the complexities and challenges in understanding power regulation and harmonics filtering in electrical engineering.
hjkklm
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Electrical Engineering problems!

Linear & switching mode power regulators:

1. What is the major weakness of a Buck Regulator that compared with a Linear Regulator?

Is't efficiency?


Passive harmonics filter:

1. If the filter reactance for harmonics is a negative value, what is the meaning behind that?

Relation to direction?

2. Passive filter can provide certain capacitive compensation to the ac traction power system. However, when there is off-peak hour, very few trains running in the system. Any problem will introduced by the filter?

Energy saving?

Thanks.
 
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hjkklm said:
Electrical Engineering problems!

Linear & switching mode power regulators:

1. What is the major weakness of a Buck Regulator that compared with a Linear Regulator?

Is't efficiency?
.

No. Quite the opposite.

The rest I don't understand.
 
rude man said:
.

No. Quite the opposite.

The rest I don't understand.

Thanks.
I don't understand too.:cry:
Anyone who can help me?:frown:
 

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