Questions tagged [losses]
The losses tag has no usage guidance.
17
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RCD snubber loss in flyback converter
I have few queries in analyzing the curves. Below is the flyback converter with RCD snubber circuit and waveforms.
When the FET is turned ON, there is no primary current flowing through snubber as the ...
- 25
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Power loss in transformer windings
I am having a confusion while designing the transformer for my smps design. I am in the initial stage of setting my equations for the transformer. I have been following the slides from the ...
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PMSM - RMS phase current as a function of Id and Iq
Assuming to have a 3-phase PMSM driven with a balanced system of currents with sinusoidal shape, is there a way to write the RMS phase current as a function of Id and Iq?
I want to use the RMS phase ...
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2
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How to create a frequency-dependent device with low losses at 50/60 Hz and high losses at 100 kHz
I'm working on a device to dampen high-frequency transients. Here are the specifications:
Rated current: 30 A RMS
Losses at low frequency (50/60 Hz): <10 W (required steady-state condition)
Losses ...
- 1,350
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Characterize ferrite cores, e.g. core losses
How can I characterize ferrite cores? I can measure saturation, but how can I measure core losses so I can decide what frequency to run them at?
I could charge a primary winding to a certain current, ...
- 199
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Calculation of Load Impedance of three phase Inverter
Could anyone here please assist me how the Equivalent impedance of Load of three phase inverter is calculated from the Inverter parameters shown in below screenshot? This screenshot is tutorial ...
- 347
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4
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Is copper loss present in the winding of an autotransformer?
Since the autotransformer transfers power conductively in addition to through its magnetic field, does its winding also cause loss of electric power in the form of copper losses? It seems to me that a ...
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Suggestion on core calculation with air gaps
I was working with the SMPS transformers and found a transformer that had a small air gap already there and was used in charging system of a battery. I wanted the ferrite core for my own transformer ...
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119
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Calculating power losses in a wire based on frequency
It's been years since college, and I'm drawing a blank on this: If I use a 12AWG wire (say a 0.083" diameter bundle of .0125" uninsulated strands) to conduct power at 25kHz to a device, how ...
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MOSFET body diode current rating vs Schottky diode
How is it possible that a MOSFET's body diode in a TO-220 package, such as the N-channel IRL3803 or P-channel IRF4905, has a much higher average/continuous current rating than a high-current Schottky ...
- 51
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Help with intuitive understanding of these transformer iron/copper loss equations [closed]
I have been going through the Handbook of Electricity Metering (11th edition) for my new job. They give the following equation for transformer watt loss due to core/line losses. I am not an EE so this ...
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464
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What is wrong with my double pulse test setup in LTspice?
I am trying to make double pulse test measurements in LTspice using the spice model of a MOSFET and gate driver we are using in our actual design. My setup seems to be not working as nothing is ...
- 347
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Conduction losses calculation of a SiC MOSFET
I have a question regarding conduction losses calculation of a SiC MOSFET. What I found in different research papers and in application notes is that you calculate the power dissipated during forward ...
- 347
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How do we maximize core and winding losses in an electromagnet (and calculate them) for variable DC input?
Bigger Picture:
Imagine a magnet approaching the solenoid with some initial constant velocity on \$v_0\$ on x axis. The approaching magnet will induce an EMF and induced current in solenoid. We want ...
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IGBT and SiC MOSFET conduction losses
What is the actual reason behind IGBTs having lesser conduction losses than SiC MOSFETs? For the same application, I can see that an IGBT having the same power rating exhibits 10 times more switching ...
- 347