Questions tagged [inverter]

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

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error iteration limit reached ,I'm a beginner to ngspice I'm using ngsipce by esim fossee help me out pls?

enter image description here I m trying to single-phase bridge inverter. here I have attached the error image, Schematic, source detail(pulse generator, Dc) transient analysis time. If I'm done a ...
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why Arduino Nano Atmega328P D9 & D10 GPIO Blowing while using PNP Transistor S8550?

I am trying to make an Simple Sinve Wave Inverter circuit using below Schmatic. As soon as I connect this circuit D9 & D10 gets damaged. should I change the value of 100Ohm to 1K ? will that solve ...
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78 views

How bad of an idea is it In an emergency to use my PV solar and propane generator together?

Set the stage: Say there is a massive grid disruption like what happened to Puerto Rico after Hurricane Maria. I live somewhere were air conditioning may be needed for some groups to remain healthy. I ...
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27 views

Pull-Up resistor for a 74LVC1G06 Inverter

As part of dual mode display port design, Pin13 goes to 74LVC1G06 inverter input (see U89): in case where I want to choose only HDMI I need to connect a pull-up to DP_0_PIN13. from wikipedia : "...
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84 views

Inverter Fourier analysis

I have an inverter circuit like below: I will use bipolar control method to produce sine wave. Our teacher said us prove basic harmonic of inverter is equal to multiplying of modulation index and Vd, ...
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37 views

Things/any reference to consider for safety to use the voltage ADC info from 3 IGBT bridges in the control loop?

Is there any mode apart from the short circuit and normal mode, that I need to check for the control loop to be executed by the micro controller?
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52 views

How to experimentally tune the current PI controllers in the synchronous reference frame?

I have been developing a control software for the grid connected three phase inverter i.e. for below given power electronics converter The control software implements below given control algorithm (...
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3answers
270 views

Transfer function of an RLC filter

I want to calculate the transfer function of the following low pass filter simulate this circuit – Schematic created using CircuitLab UPDATED Circuit It is made from an inductor, the internal ...
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52 views

Circuit to detect only one zero crossing when a sine wave changes from negative to positive half cycle

In a Grid Tie Inverter design, I need a circuit which can detect only one zero crossing of the Grid signal, (when the signal will change from negative to positive half cycle). I have made a circuit, ...
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50 views

transform the square wave of a voltage inverter into a sine wave

I'm building a voltage inverter to power a refrigerator compressor, to lower the cost and simplify the project. I chose to use mosfet irfz44n on the primary part of the inverter, which however will ...
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61 views

Why it is required to fuse each inverter in common DC bus

I have four variable-frequency drives (VFDs) in total supplied from one largest VFD in system. The other three VFDs don't have connection to ac grid. These three VFDs are supplied from common DC bus. ...
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Counter to common believe, Carrier frequency dosn't have to be an odd multiple of fundmental frequency in 3 phase Inverters — But Why?

According to Dr. Holmes book titled "Pulse Width Modulation for power converters" he states "First, the frequency of the .carrier harmonic is independent of the fundamental reference ...
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Can a 48v electric bike battery be charged from a 4v or 5v Son 28 hub dynamo?

I want to ride an electric bicycle over long distances, including hills. I only want the motor for steep ascents. I am trying to stay off-grid as much as I can. So I would like to recharge the bike'...
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93 views

Why did the transformer heat up when connected to a UPS?

I have an electromagnetic vibratory feeder with 2-phase input, 380 V, 0.35 kW. We noticed that the feeder has stable performance when it is connected to a generator because it has constant frequency ...
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88 views

Pure sine wave inverter 200W

I would like to transform 12V DC to 230V AC 50Hz, peak load 200W. Efficiency is not a concern. Main concern is puresness of the sine wave. If I am searching for "pure sine wave inverters" ...
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I have designed a sine wave inverter, but it has a feedback problem

I have designed an inverter (DC to AC,) which is sine wave and using a center tap transformer (500VA.) The circuit works fine without any short circuit. The transformer I have used is 500VA and ...
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48 views

Control multiple Schmitt Trigger oscillators from a single current sink

I'm playing with an idea for a VCO (Voltage Controlled Oscillator), and would like to make something a bit out of the ordinary. My idea is to run multiple sawtooth oscillators from a single control ...
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36 views

Solar Inverter makes 15kHz noise at ~70dB when running

I have a solar power setup with an array of panels running to an inverter, which is connected to a set of batteries and to two other devices for monitoring the net metering, power output, and so on. ...
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60 views

Are there any 20v to 240v step up transformers in the market? [closed]

I'm constructing a AC motor driver for a project that will take in a DC voltage source and output an AC voltage fit for an AC-motor. I didn't have prior experience with power electronics or power ...
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12 views

Rated Power Variance

I have a question about the rated power of a coffee machine. The specs on the coffee machine are; Rated Voltage 220-240V~50/60Hz Rated Power Coffee Machine Only - 915-1090W Together with Milk Frother -...
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74 views

DC AC Inverter topologies

I am trying to get a deeper understanding of sine wave inverters (like this one) and thereby came across different topologies like a Push pull inverter with a center taped transformer or a full bridge ...
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36 views

Connect Wind turbine to existing solar inverter with MPPT

Currently I am doing research on connecting a 3.5 kW wind turbine to an existing grid tie solar inverter with MPPT. It would be very nice to use the widely available PV inverters and connect a wind ...
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What are the multiplication factors for switching frequencies in 3 level NPC, TNPC and 5 level inverter topologies with 2 level Fsw as reference?

I am trying to compare losses of 2 level inverter topology with that of 3 level NPC, TNPC topologies. However, it may seem not a valid comparison if the switching frequencies of every topology remains ...
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35 views

Inductor behavior when connected to inverter

I was working one of my project wherein i was supposed to connect inductor to an inverter and inverter's output would be fed back to inductor. However my observation is that whenever inductor is ...
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46 views

How do power banks like the OmniCharge, convert 3.7V to 120VAC?

I've noticed the cells are all put in parallel in these devices and it lead me to asking myself what kind of inverter could they be using? Like isn't it a bit inefficient to convert from such a low ...
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45 views

Solar system design: Inverter keep tripping problem [closed]

What is the problem when my 2kW pressure washer can only use for 3 to 5 minutes? The inverter drop to 50v and then tripped. My solar system consist of 48v 200Ah battery bank with 3000w inverter (48v ...
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44 views

Power consumption of an inverter

I want to calculate the consumption of a PV inverter connected to a 50 kW PV plant. In the datasheet of the inverter it is written that the consumption of the inverter is: < 0.24% of Pac,r. I ...
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25 views

Efficiency of the PV inverter

I'm doing a little university project in which I'm projecting a small PV plant of 50 kW. When I produce more power than my load need, I want to store the solar power inside the battery. Should I ...
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76 views

Full bridge inverter failing after given input voltage

For my master thesis, I am designing a wireless power transfer using magnetic resonance. For this purpose, I designed a full bridge inverter which is connected to an autotransformer whose output is ...
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42 views

Dividing current between inverter and relay

I want to make DIY ATS. My power supply is from 120Ah 12V battery. I have a 12V to 220 inverter and a relay circuit. My problem is the inverter doesn't supply 220V when it is in parallel with the ...
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83 views

Ringing problem Bootstrap for high side mosfet driver

I am using three phase half bridge inverter to power a PMSM motor and bootstrap for the high side MOSFET. The schematic is in attachment. Gate driver is Si8273, MOSFET is IPT015N10N5. But when I ...
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58 views

Grounding and protecting 12V Inverter

I am always surprised when researching online for a topic for a few hours does not bring solid responses. This is one of such situations. I am in the process to provide AC power to a remote small ...
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42 views

Three-phase inverter simulation - incorrect result

while simulating a three-phase inverter circuit with a three-phase load circuit. the simulation result seems incorrect. here is my circuit and simulation result. the input voltage is 300v the output ...
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57 views

How do appliances prefer to use my solar power from a grid-tie inverter over the power from the grid?

I have a grid-connected solar inverter. In the swtich board the incoming wire from the street, the incoming wire from the inverter and the outgoing wire to the loads in my house are all connected ...
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35 views

Searching for open source Software for motor driver Simulation (PUC inverter)

I am trying to simulate the Five Phase Five Level PUC Inverters as you can see below (from this paper): So as I don't have Matlab licence for this simulation I am trying for others alternative to do ...
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39 views

Question on certain terminologies in CMOS Technologies

So, when someone says a CMOS inverter (or any CMOS component) is "weaker" or "stronger". Is "weaker" referring to smaller Width and higher resistance (or the reverse; ...
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33 views

High-Side output of IR21094 Gate Driver does not switch

I am trying to simulate an IR21094 based half-bridge inverter on LTSpice. The design follows the recommended design on the datasheet by the manufacturer (https://www.infineon.com/dgdl/Infineon-ir2109-...
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What happens if an inverter neutral is bonded to earth

My question is similar with this question: https://physics.stackexchange.com/questions/299199/will-a-battery-connected-to-the-earth-eventually-deplete#:~:text=First%20off%2C%20every%20battery%20will,...
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When using a Primera-Line Wattage and Current Meter, is it showing AC or DC measurements?

I am new to the electrical engineering stuff and am looking for some guidance. I'm going to be designing a off-grid power system for some devices. So I will need to get the power measurements from ...
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Is it possible to drive a 6 or 5 lead stepper motor with 3 phase inverter/bldc driver

I wanted a good way to test my inverter circuit and all I have is a 6 lead stepper motor and a 5 lead stepper motor. Would this work for testing? I have no idea how I would wire the motor. I own a ...
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26 views

Hall effect sensors for BLDC CW and CW positioning

Hi I have just designed a BLDC controller and I have it running in both CW and CCW directions. I have noticed that when operating in CCW the motor is less noisy and more smoother than when operating ...
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What is the switching pulse pattern for FC based ANPC converter?

I am performing simulations to estimate power losses under steady state condition. The converter that I had to choose was 5 level Flying capacitor based ANPC converter. I am using PD-PWM technique for ...
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57 views

Easiest way to (quietly) drive a 2W 120VAC load (piezo air pump) from MCU-controlled 3V/5V/12V?

I'm trying to drive this piezoelectric air pump that requires 1.5W and runs on 120VAC 60Hz wall power. This will be controlled by a MCU/CPU of some kind (Raspberry Pi in this instance), so the control ...
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57 views

Is it possible to obtain a sine wave with a 3 phase inverter?

In several pages, I have read that it is possible to obtain a sine wave (maybe with harmonics) from a three-phase inverter, with six transistors or thyristors, like this: I have seen some techniques, ...
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187 views

An inverter without a transformer?

I am trying to build an inverter without a transformer. I want to use a 12V battery connected to a boost converter which will boost the 12V to 120V, then simply attach an H-bridge to the 120V boost ...
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38 views

I have to draw the corresponding transistor-level schematic of the CMOS layout below

I am an electrical engineering student and I have the following assignment: 'Draw the schematic that is correspondent to this whole layout'. I can understand how to translate the inverters from the A,...
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119 views

What is this component (is it a rectifier?)

I'm currently reverse-engineering an air conditioner inverter circuit. I have stumbled upon a weird package. The thing is I can't de-solder this component, so I can't read the letters on it. Do you ...
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1answer
182 views

12v dual battery setup - wiring, grounding and busbars

I am installing a 2nd 12v battery into my van to run eletronic devices. The 2nd battery is a bank of 2x LiFePO4 12v 120Ah connected in parallel. My three questions are surrounding the circuit diagram ...
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64 views

Wattage of adapter to size my inverter

I have a couple of appliances that already have their power specified on them. However A few of them do not. The device is powered from an external power brick adapter. One adapter for instance has ...
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33 views

reduce voltage for inverter in solar system

I have a solar system (solar panel, controller, battery and inverter). Battery have standby use 13.6-13.8V, cycle use 14.5-15V. I set the charging voltage to 13.8V. The problem is that inverter to 230 ...

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