Reverse current without reversing voltage?

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SUMMARY

The discussion centers on the operation of choppers in power electronics, specifically the feasibility of running a chopper in the first and second quadrants while maintaining positive voltage across the load. Participants concluded that while reversing current is not possible, it is feasible to achieve a phase shift of pi radians using reactive components. The conversation highlights the complexities of impedance in reactive circuits and the need for a specific chopper design capable of operating in both the first and second quadrants.

PREREQUISITES
  • Understanding of power electronics and chopper circuits
  • Knowledge of first and second quadrant operation in electrical systems
  • Familiarity with impedance and phase shift in reactive circuits
  • Basic concepts of load current and voltage relationships
NEXT STEPS
  • Research designs of choppers that operate in both the first and second quadrants
  • Study the principles of impedance and phase shift in reactive circuits
  • Explore the applications of first and second quadrant choppers in power electronics
  • Learn about the role of reactances in controlling current and voltage in circuits
USEFUL FOR

Electrical engineers, power electronics students, and professionals interested in advanced chopper designs and their applications in circuit analysis.

roTTer
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I was studying First and Fourth quadrant choppers and that got me thinking.

Can the chopper run in the first and second quadrants meaning always Positive voltage across the load and Positive and negative load current.

My reasoning makes me think that it is not possible.

Any help?
 
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You can't reverse current as such, but you can make it pi radians out of phase with the voltage.

It is caused by the imaginary part of impendance, in reactive circuits.

No clue what the context is - But chances are this is your answer.
 
I am aware of the phase shift using reactances.

Choppers are part of the Power electronics subject that we have in our courses.

The question that I have is there a chopper designed that can perform in the I and II quadrant?

I'll post the image of the I and IV quadrant chopper to clear things out more.
 
Ahh, my appologies in that case, power electronics is black magic to me, but if you post a diagram I'll definitelly try to work it out.
 

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