Dear Gaurav, I value your work but the phase difference at 4:00 is 180 not 90. The example using 2phases is not correct. You should make a note in the video, pin a comment to clarify the subject or edit the video.
Nicely explained. I always wanted to know what in the world is this thing called "PHASE" & not even electrical engineers could answer my question. Thank you.
Current (amps) and Voltage (volts)start at the same time. Both meet peak at the same time. result in PEAK POWER. Fantastic explanation. Easy to understand the lesson. Thank you.
In a purely resistive circuit voltage and current start at the same time. Real life isn't that easy. In an inductive circuit voltage leads current. In a capacitive circuit current leads voltage. Calculations involve the use of an imaginary number (square root of -1). Then the man you have to remember is ELI the ICE man. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2yqjMiFUMlA.html
Nice video sir. But I have questions : If 1 phase and 2 phase winding's is put at 90 deg how in the world the power generated is called constant? Don't the magnet NOT generating anything while rotating on 180 deg and 270 too? What happen when the magnet goes through the A1, B1 or C1? Do they generate power? And I saw some comments suggesting 4,5 or 6 windings here. While I assume 4 and 6 winding position will contradict each other because limited place in a circle, can we add 5th winding? Would that work?
Same here totally agree. All my life and 2 degrees, NOBODY and NO BOOKS EVER explained to me this crucial info. What a crazy world. So thank you Electrical Guy. We love you.
@@335Mad Plenty of people with his accent know the answers... he's just too stupid to find them, and the effort of listening a little more carefully is too much for him.
A very good explanation. Although I am not an Electrical engineer, I have a query. What if I add one more winding to the 3 phase, will it make my peak current even more than 1.5 times the peak current (3-phase). If yes, up to what no of windings can it be increased? If no, what is the reason behind it? Pardon my English, if I did any mistake.
No. From 1-2, you went up 100%, but 2-3 went up 50%, but 3-4 phase will likely net you only a 33% increase in power, but the complexity also increases since you’ll likely need much more infrastructure. 3 phase is magical in this regard. You can run 3X power with only 50% more wiring.
some remarks (English not being my first language I may have misunderstood): Why do you represent the voltages with a phase shift of 180 degrees at 3 min53 of the video by speaking of a phase shift of 90 degrees (if there are 90 degrees the 0 of B must correspond to the max of A). it is impossible to manufacture a single-phase alternator that works correctly because of the reverse magnetic fields (Leblanc's theorem). It is accepted for low powers but the losses become prohibitive for significant powers (> 10kVA). An alternator worthy of the name must be polyphase. This is also why single-phase motors are an energy disaster and limited to a few kW. The power on a resistive load in three phase = U.I.1,732 with (1.732 = square root of 3) and in single phase = U.I.
Hello Sir recently one nano transformer was invented by one person in tamilnadu. The special of the transformer is there is no shock and short circuit. If you know means please explain How it's possible
You are truly a teacher. Many thanks. Quite understood. 🤷 Can someone go for a 4 phase? Coz from the proportions I see above, it will double the power of 1 phase.
@@GauravJ Wow... I will wait for it. I am not an engineer but have met engineering in the course of my entrepreneurial duties. The result should be quite interesting as I see clashes at points A1/C, B1/D, C1/A, and D1/B. In the physical sense, there should be a way to utilize it more interestingly for more power, hopefully. I am looking at the phases 5 and 6 and some possible factors of 360. I love this.
@@GauravJ 5-phase 72° apart, etc. Will really need to see the 4-phase. It'll give an insight into 6-phase, 8-phase, 16-phase, and wherever those clashes are expected. 🤷 Sorry, it is just theoretical in the head right now. I don't know about any possibilities yet. But it is a good start.
isn't there double sets of each phase?...so it would cut in half... phase A A1..B B1 C C1....so you would 'rotate' one SET 90deg..otherwise you're right but 2set each phase mirrored is.. 180 divided by 2 =90deg
When the magnet is rotated 90 degrees mechanically, the starting point of the voltage sine wave from the 2nd set of windings should be offset by half of the wavelength, relative to the starting point of the voltage sine wave from the 1st set of windings. It's a bit more complicated than that because his graph only showed positive voltages. It failed to show the negative voltage when the magnet is rotated 180 degrees mechanically from the starting position. Also his graph of the 3-phase voltages should be overlapping, each one should be offset by 1/3rd of a sine wavelength.
Matthew Grotke i thought the A and A1 was used to describe the negative/positive and that to make it easy to understand they put the magnet in the center and the coils on the outer area.. how is this description as to the principles wrong? i mean 180 would just go from positive to negative right? so for 2 phase it would be to the 90 position..and 3 phase 60degrees..considering only how they chose to describe it in this example of course.
Yes, I concur. I had this same suspicion, but I hesitated to contradict this expert. It seems to be an honest mistake, but I am surprised I had to go so far down the list to find someone else who saw it. The circle is 360 degrees, so 2 phases would be 180 degrees. Four phases would be 90 degrees. The presenter says that one phase generation power is about one half the amplitude of the of the peak phase. Two phase power is approximately equal to full phase amplitude of the sine wave. Three phase power is approximately 1.5 times the amplitude of the full phase of the power generation. I can only take this on faith since we are not give the equations that derive this conclusion. Oh, well, sounds sketchy, but nicely presented anyway.
Nice to understand. Please put a video explaining difference between AC and DC power and please explain why domestic power supply is AC in almost all countries and why not DC ?. If DC supply is followed we can avoid shock hazards.
Nice video! In Brazil is a mess, States electrified by GE usually have residential supplied by ~1 127V 60Hz. Normally the pole transformers output is ~3 220V, but houses has two or the three phases always used with the neutral. (three phases in a house is rare, because it is taxed as industrial/commercial supply, higher than a mono or two-phases). States electrified by Siemens and other European Companies in the past uses ~2 220V 60Hz. In those States it's possible to find high-power appliances as electric stoves, washer/dryer machines, boilers, electric showers with higher power than where the standard is 127V, for this cases appliances can't run above 1500W and electric showers must have 5kW and an overwhelmed 50A circuit.
In a 127V zones, you can use a 220V with a 3 wire service entrance, 2 phase + neutral. You can use 220V L1-L2 for high power apliances. The 127V single phase up to 8000W (63A), the 127/220V up to 16000W (63A).
Maybe this is a very long time but if it helps here is the logic: 3 phase has 3 windings working at the same time, which are distributed evenly 120-120-120 degree making 360 degree circle. At any given point when 1 phase reaches it's highest power state (1), the immediate next would be at half i.e. 0.5, and the last one would be at 0. When you add up 1+0.5+0 = 1.5 When the coil/magnet/armature/winding moves to the next immediate place all three phases move to the next cycle but when you add up the increase and decrease of all 3 phases it will always come to 1.5
Love this interesting video. You seem to know and understand the things you are talking about. Very well then, this might be the best place for me to ask my questions and clear my doubts about electrical devices and parts. The R1 and R2(register), what are they used for? Collecting and storing the electric current produced by electric motors? But, what exactly is a register? Is it a device that you can purchase? If so, do they have a voltage limits? Also, my next question my not be related to this video but I carry this question for quite a long time now. So, please allow me. What is the difference between DC to AC Converter & a transformer. I always thought they work the same way. Do a transformer has a voltage, amp and watts limit? For example, if I wanted to convert or transform 5watts, 10watts, 20watts etc etc. DC current into AC. What kind of transformer do I need to use? Thank you very much.
This is not the reason we use 3 Phase power instead of 1 Phase. The reason is because in a 3P system you can "cancel" them and you don't need to have a "return" cable. So for transmission lines with one one extra cable the same size (3 instead of 2) you can deliver 3x the power. Also for motors there is some benefits. There is no "magical" extra power. You can only produce the amount of power that your energy source is providing. A 1P small electric gasoline generator and a 3P equivalent one consume the same amount of gasoline and produce the same amount of power.
I think there is a small mistake here. At 3:54 he shows the 2nd waveform shifted 180° relative to the 1st, whereas it should be 90° according to the description of the generator.
Thank you!!! I've been trying for so long to find a clear explanation of phasing on turbo generators. I finally get it!! I tip my hat to you good sir o/
Can anyone answer for these questions. 1. can we put two phases at 180 degrees apart. what will be the outcome? 2. why are we using only three phase, why not 4,5,6?
what if the equipment use is 3phase but the only electrical line in the area is only single phase. the only way is to convert the single phase into three phase. so the question is, if the 75kva single phase transformer input will change the capacity when converted to a three-phase output. thanks
