Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [inverter]

Electrical device that converts direct current (DC) to alternating current (AC).

From Wikipedia: An inverter is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency depends on the particular device employed. The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry.

Solid-state inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers to large electric utility high-voltage direct current applications that transport bulk power. Inverters are commonly used to supply AC power from DC sources such as solar panels or batteries.

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How does an inverter affect the computer?

I have rampant power failure in my country. So to mitigate, we have an inverter that basically converts the charge from a big lead-acid battery to AC. But as far as i know this doesn't produce pure sine AC. It is something close to sine. The output…
A User
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12 Volt from solar panel converted to 120VAC without battery

I have solar panels that will supply about 200 watts. (They are rated for 400 watts.) I have a load that needs about 150 watts, 120 Volt AC, off grid, and only when the sun shines. The 12 volt solar panels have an open circuit voltage about 17…
sparky Al
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500W Inverter + Laser Printer

I have a laser printer that I've been wanting to use on the go in the car with an inverter. The power consumption section in the printers manual: Average operating mode Less than 310W Ready mode Less than 30 W Power save mode …
OdinX
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Dead-time compensation for 3-phase inverter

I cannot understand this dead-time compensation method. I have provided the whole cut out of the section of this book: Control of Electric Machine Drive Systems by Seung-Ki Sul, chapter 7.1.1 The problem I have is that in figure 7.2 the author says…
Trex
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What exactly is SVPWM? Is it used in grid-tied inverters?

I've been doing some research on ways to drive the half-bridges in a 3-phase, grid-tied, pure sine wave inverter. I knew about SPWM but not about SVPWM. Based on what I've read, it's superior to SPWM in multiple ways, but what exactly does an SVPWM…
Cedric
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Square wave inverter

I would like to have an idea for a square wave inverter I am making.It would be a 48V to 415V in the final product, but initially I am trying it with a 24V to 207V with the same transformer. I am implementing this with a PIC uC which will generate…
EmbSysDev
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Is there an IC that inverts DC==>AC at the resonant frequency of a tank connected to it? (~50V ~40A)

Assuming I used the word "tank" correctly (something that has a resonant frequency) I have been working on a circuit that has 4 leads--two for DC input and two for AC output--such that you can attach something with a resonant frequency to the AC…
Alex Eftimiades
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How do grid tied inverters interrupt grid voltage

I have a common electrical panel fed by the grid. I have a 5.2 kW solar array backed in to the lowest breaker slot on a 30 amp breaker. The system was professionally installed and I never had a chance to ask the electrician, how on earth do the…
Vizzin72
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Inverting a modulated signal

I'm modulating the message signal with OOK (on-off keying) modulation. Multisim software is used to model the schematic [attached]. At the resistor R1, the modulated signal is obtained. I wanted to invert the modulated single, for that I used a…
Bam_Khel
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Why do we not use true sine waves in power inverters instead of PWM?

These days it seems all power inverters use variable PWM and an H-bridge to generate the signal which drives the output transformer. Why do we not use a pure sine wave oscillator and amplifier instead? It seems to me the technical complexities of…
spinjector
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Grid tied inverter

Grid tied inverter voltage is slightly higher than that of grid but once the tie is closed voltage will be equal then how the current will be injected from the inverter
Sudip Maitra
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Running Washing Machine from an Inverter

I run the house on a solar power source through a Trace DR2424E 2500 inverter. Everything works great except for the washing machine. I can't get the washing machine to work unless I put heavy load on the inverter, other than that, I get an error on…
Jaz
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Multi-level inverters

"DCMLI has two advantages over conventional H-bridge inverter; the higher voltage capability and a reduced harmonic content". eg see here for one example of that claim. What does the above statement mean, I am failing to understand it.
user313612
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Why does the position of GND influence the circuit?

Here is a five-level inverter circuit, simulated by Pspice: When I connect the GND to port1 the simulation results are correct, and the output wave is a five-level step wave, which contains the voltage levels of 0 V, 3 V, 6 V, 9 V, and 12 V. Here…
Linda Yu
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The principle of conventional four-level diode-clamped inverter

Here is a four-level diode-clamped inverter (only one phase shown.) I am confused why this kind of circuit it called 'diode clamped' inverter. How do the two diodes work here? I know the working principle of a three level inverter，but I am not clear…
Linda Yu
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