Changing Frequency of AC Power Supply: Circuitry vs Generation

AI Thread Summary
The standard method for changing the frequency of an AC power supply is to ensure the generator operates at the desired frequency. If frequency adjustment is necessary, converting AC to DC and then back to the desired frequency is a common approach. For specific frequency harmonics, ready-made circuits like frequency doublers can be utilized based on power requirements. In commercial applications, Variable Frequency Drives (VFDs) are widely used to control motor speeds and adjust frequency effectively. Overall, selecting the appropriate method depends on the specific application and power needs.
Hank_Rearden
Messages
25
Reaction score
0
Can anyone tell me what the most standard way of changing the frequency of an AC power supply is? Can it be done with circuitry or does the method of generation need to be set at the desired frequency?
 
Engineering news on Phys.org
Hank_Rearden said:
Can anyone tell me what the most standard way of changing the frequency of an AC power supply is? Can it be done with circuitry or does the method of generation need to be set at the desired frequency?
The most common is to ensure that the generator is the right frequency.

If you have to change frequency, a common method is to convert to DC, then back to the desired frequency. If you want merely a harmonic of the original, there are circuits that can do that for you ready made as modules (frequency doublers) depending on the power requirements.
 
Almost every motor (exhaust fans, air handlers, etc.) in a commercial building uses a VFD (Variable frequency drive.) So, id say this is a very common way. http://en.wikipedia.org/wiki/Variable_frequency_drive
 

Thread 'Underwater piezoelectric sensor array receive sensitivity'

Hi all I have some confusion about piezoelectrical sensors combination. If i have three acoustic piezoelectrical sensors (with same receive sensitivity in dB ref V/1uPa) placed at specific distance, these sensors receive acoustic signal from a sound source placed at far field distance (Plane Wave) and from broadside. I receive output of these sensors through individual preamplifiers, add them through hardware like summer circuit adder or in software after digitization and in this way got an...
View full post »

Thread 'Following up on the recent thread about Earth Resistance measurements'

I have recently moved into a new (rather ancient) house and had a few trips of my Residual Current breaker. I dug out my old Socket tester which tell me the three pins are correct. But then the Red warning light tells me my socket(s) fail the loop test. I never had this before but my last house had an overhead supply with no Earth from the company. The tester said "get this checked" and the man said the (high but not ridiculous) earth resistance was acceptable. I stuck a new copper earth...
View full post »
Thread 'Beauty of old electrical and measuring things, etc.'

Thread 'Beauty of old electrical and measuring things, etc.'

Even as a kid, I saw beauty in old devices. That made me want to understand how they worked. I had lots of old things that I keep and now reviving. Old things need to work to see the beauty. Here's what I've done so far. Two views of the gadgets shelves and my small work space: Here's a close up look at the meters, gauges and other measuring things: This is what I think of as surface-mount electrical components and wiring. The components are very old and shows how...
View full post »

Similar threads

How do I properly connect a bench power supply to a pulse generator for testing?
Replies
19
Views
2K
Sizing an Isolation Transformer for a DC Power Supply
Replies
8
Views
2K
Can power supplies/adapters be used to clean up dirty generator power?
2
Replies
61
Views
9K
What does the 'power' vs 'time' graph look like for a 3 phase AC supply?
Replies
13
Views
4K
Power supplied by AC component + DC component = total power?
Replies
6
Views
4K
Induction heater using Bicycle Dynamo Generator @ 24 V 60HZ Supply
Replies
10
Views
2K
Is There Still a Market for Mechanical High Power DC/AC Generators?
Replies
7
Views
2K
Induction Motors: Rotating Magnetic Field & AC Frequency
Replies
5
Views
3K
Key fob only works on battery and not power supply. What?
Replies
33
Views
3K
Query about the time average of an AC power supply
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top