Rectifier circuit for AC sources with 180˚ phase offset

In summary, you can rectify AC outputs with a 180° phase shift by connecting the wires in a full-wave bridge.
  • #1
Manuel12
7
1
In a simple 2-phase generator that I am making, I have 2 pairs of oppositely placed copper coils in arrangement similar to this:

Screenshot 2023-01-05 at 11.25.52.png


I would like the generator to power DC devices. My question is: How could one rectify the output from opposing coils? Or, in other words, how could you rectify 2 AC outputs with an 180˚ phase shift?
 
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  • #2
I would expect the windings at 90° would have phase at 90°.
You need to show the rotor magnetic poles.

Opposite coils would have phase at 180°, so would be connected to sum the voltages.
For 180°, reverse the connections, or wind the coil backwards.
Use two full-wave bridge rectifiers, connect the DC outputs in parallel.
 
  • #3
Baluncore said:
I would expect the windings at 90° would have phase at 90°.
You need to show the rotor magnetic poles.

Opposite coils would have phase at 180°, so would be connected to sum the voltages.
For 180°, reverse the connections, or wind the coil backwards.
Use two full-wave bridge rectifiers, connect the DC outputs in parallel.
By winding the coil backwards, do you mean winding opposing ones in opposite directions to each other? Just want to check.
 
  • #4
Manuel12 said:
By winding the coil backwards, do you mean winding opposing ones in opposite directions to each other? Just want to check.
You are now aware that voltages can add or subtract, depending on how you wind or connect the coils.

How many North poles are there on the rotor?
How many South poles are there on the rotor?
 
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  • #5
Baluncore said:
You are now aware that voltages can add or subtract, depending on how you wind or connect the coils.

How many North poles are there on the rotor?
How many South poles are there on the rotor?
One north pole on one half of the cylinder, one south pole on the other
 
  • #6
Manuel12 said:
One north pole on one half of the cylinder, one south pole on the other
The output of the windings will be in quadrature, which means 90°.

You are building a two phase alternator with four wires going to the rectifiers.
TwoPoleTwoPhase.png
 
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FAQ: Rectifier circuit for AC sources with 180˚ phase offset

What is a rectifier circuit for AC sources with a 180˚ phase offset?

A rectifier circuit for AC sources with a 180˚ phase offset is designed to convert alternating current (AC) to direct current (DC) while accommodating two AC sources that are out of phase by 180 degrees. This type of circuit is often used to ensure a more stable and efficient conversion process, as it can balance the input from two sources that are oppositely phased.

Why is a 180˚ phase offset significant in rectifier circuits?

A 180˚ phase offset is significant because it means that when one AC source reaches its positive peak, the other reaches its negative peak. This phase difference can be leveraged to create a more consistent and smoother DC output, as the peaks and troughs of the AC inputs can be combined to reduce ripple and improve the efficiency of the rectification process.

What types of rectifier circuits are suitable for AC sources with 180˚ phase offset?

The most suitable types of rectifier circuits for AC sources with a 180˚ phase offset are full-wave rectifiers and bridge rectifiers. These circuits are capable of handling the phase difference effectively, providing a continuous and stable DC output by utilizing both halves of the AC waveform.

How does a bridge rectifier handle AC sources with a 180˚ phase offset?

A bridge rectifier handles AC sources with a 180˚ phase offset by using four diodes arranged in a bridge configuration. This setup allows the circuit to rectify both the positive and negative halves of the AC input. When one AC source is positive, the corresponding diodes conduct, and when the other source is positive (and the first is negative), the other pair of diodes conduct. This results in a unidirectional current flow, producing a stable DC output.

What are the benefits of using a rectifier circuit with AC sources that have a 180˚ phase offset?

The benefits include improved efficiency and reduced ripple in the DC output, as the phase offset allows for continuous rectification with less downtime between peaks. This can lead to a more stable and reliable power supply. Additionally, using both halves of the AC waveform can reduce the stress on individual components, potentially increasing the longevity of the circuit.

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