Questions tagged [inverter]

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

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1answer
44 views

Finding output power of a three-phase inverter from V and I

I have made a simple three-phase inverter in Simulink. I have the output waveforms for the line-voltage and current as shown below, where the voltage is in plot 1 (I have split the waveforms for ...
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1answer
57 views

Pre-charge resistor and contactor power dissipation calculation

I am building my e-motorcycle. I am planning to use only one contactor instead of using three contactors. In my plan, pre-charge resistor and contactor circuit will be main contactor too. I am curious ...
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30 views

i need a low volt dc motor with specs to handle opening a cantilever style gate opener or a 12vdc solar to ac motor diag. and motor specs

My curb cut is 800 plus feet away from any possible ac electric source and it seems easier to design a self contained gate operator system at a low cost. So here is the what for and why to.....' Our ...
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1answer
49 views

5 level inverter using H-bridge with mosfets

I want to make a 5 level using H-bridge. I have made H-bridge using MOSFETS and it works. My problem comes when adding output of these two H-bridges to get 5 voltage levels. I am adding the outputs ...
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39 views

Query on PI Tuning of Three Phase Inverter

I am working on tuning a PI controller for a three-phase three-level PWM inverter as part of our larger project, but I am facing issues with said tuning using the sustained oscillation method. To ...
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5answers
187 views

Why does a mains LED lamp attached to an inverter glow dimly despite being switched off?

I have 220V AC LED lamps (bought from eBay) connected to a 1000W pure sine wave inverter, which itself is connected to a car battery. There is a ususal on/off switch between the lamp and inverter on ...
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2answers
68 views

What causes my inverter MOSFET to produce this incorrect output?

I'm new to layout. I followed a couple of tutorial on youtube to create an inverter using Magic VLSI, despite following step by step I cannot obtain the same output. I'm using scmos library. Is there ...
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1answer
78 views

Matching rectifier with inverter

I'm trying to make a DIY wind turbine generator from a 3ph squirrel-cage induction motor but I'm having trouble matching the generator with the rectifier with the inverter. I'm not sure which ...
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1answer
50 views

Diode-clamped five-level inverter simulation with PSpice

I am working on a diode-clamped five-level inverter simulation with PSpice, but I am unable to get the right results. I have done a simulation with Simulink and I can get the correct result which ...
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1answer
51 views

FOC and Inverter modulation techniques

I'm not sure I understand how FOC and modulation techniques work together. If I understand properly, the output of the FOC algorithm is the required voltage at each phase of the motor that is given ...
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2answers
43 views

Inverter voltage conversion

I have a 24 Vdc battery that I have connected to an inverter to. Using the Vrms to Vac equation (i.e. multiplying by sqrt(2)) I would find the peak value of the Vac. So it would be 34.0 Vac. My ...
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32 views

Controlling two traction motors in a car

I'm doing an ev conversion and decided to go with two PMSM motors and two inverters (each for one axis). I'm trying to understand how to control the power output on each axis. I know that RPMs on both ...
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1answer
86 views

Design of a three-phase grid inverter

I'm trying to design a three-phase inverter that takes +325V/0V/-325V input rails and converts it to three-phase, 230Vrms, 50Hz pure sinewave AC. At a power of a few kW per phase. I don't think this ...
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1answer
103 views

LTspice Half bridge inverter ringing and current spikes

I'm trying to build a pure sine wave inverter in LTspice but I'm having some trouble. This is a test circuit, the voltage source outputs an SPWM signal which becomes a perfect sinewave after passing ...
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33 views

240VAC solar/mains via ATS: correct wiring for earth

Please note I am new to all of this so sorry for any mistakes... I have basic solar PV arrangement as follows: 12V 120W solar panel 40A 12V/24V MPPT solar charge controller (12V operation, ~500W ...
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1answer
51 views

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 ...
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2answers
110 views

MC34063 inductor current peak does not match calculations

I am trying to design a voltage inverter based on old/cheap/jelly bean parts. I wanted to use the MC34063. Mostly for learning purposes, so I don't look for easier parts to use for now. I run the ...
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0answers
32 views

PMSM phase currents rms values are too much higher than supply dc current

I implemented to FOC tecniques with SVPWM switching method a bldc motor. And I realized that when dc supply current is 0.2A dc, phase currents pick values about 2.1A. The circuit has 3 low side shunt ...
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2answers
35 views

Double conversion UPS off a modified sine input?

I have a 2000W modified sine wave inverter running from 12V bank in a tractor-trailer. It’s company owned, so no changing or adding equipment. Only viable solution I can see to achieve a sine wave is ...
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29 views

Grid-tied micro-inverters and lightning risk

Consider a roof-top solar generation plant. Usually here, a bunch of panels are connected in series to a "string" inverter. So, DC voltage goes up to hundreds of volts. I gather that this ...
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2answers
48 views

change cmos inverter switching threshold

I'm working on a problem that requires me to change the switching threshold of a cmos inverter to a different Vout when Vin is the same. All I know is this relates to the W/L ratio of pfet and nfet. ...
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3answers
410 views

Which side of the MOSFET's gate signal should be longer? Microcontroller to MOSFET driver or MOSFET driver to MOSFET gate

I need to drive MOSFETs for a 3 phase 3 level inverter circuit. I have thought of two methods to design the circuit. I want to know which of the two methods will work the best in terms of noise ...
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0answers
60 views

Use 12V to 240V inverter to supply 240V power to a transformer

My gate opener was connect to a 240V power outlet on the wall through a AC 240V to AC 16V transformer. The gate opener has a 12V battery inside. This is specification of the gate opener: Motor: 120 ...
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1answer
68 views

Laptop running on house inverter adds flickering to lights, was wondering if a capacitor can help [closed]

I recently installed a pure sine wave inverter system (Exide GQP 24V 1450VA) capable of delivering a 1000 watts to combat frequent power cuts. The inverter is wired at the mains input of the house and ...
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1answer
31 views

Buffer with parallel capacitors

Hello I am trying to build the following 3 band equalizer for a project. As I am analyzing the circuit I've come to a problem. I do understand what the "second stage" does: It's a summing ...
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3answers
92 views

How does an inverter control current?

I understand how to control voltage. If I have a buck converter supplied with DC voltage (\$V_{DC}\$), I can command the output voltage (\$V_{out}\$) directly via the duty ratio (\$D = V_{out}/V_{DC}\$...
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4answers
3k views

Is it ok to connect 60Hz inverter to 50Hz transformer?

I have a car inverter (DC 12 V to AC 240 V). Inverter's frequency is 60 Hz. I want to connect the output (240 V) of the inverter to an transformer (AC 240 V to AC 16 V) which indicates input frequency ...
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2answers
171 views

How to make my signal square without using two MOSFETs (and inverting it twice?)

I am trying to extend an existing solution to decode a specific signal (solved here for 1200bps speed: http://hallard.me/demystifier-la-teleinfo/ - article in french.) A 9600bps signal comes from a ...
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0answers
27 views

Connecting a DC source to a 3 phase PWM inverter input

I have an application where I want to connect a 700 V, 21.5 A, 15 kW DC source to a 3 phase PWM inverter connected to the AC grid via an isolation transformer. The inverter will load the DC source ...
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0answers
38 views

Wire guage to connect to chassis in van

I'm building an AC electrical system for my van conversion and I'd like to know if there's a minimum wire gauge I should use to connect my negative bus bar to my van's chassis. Specs: I'm running a ...
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3answers
84 views

Will there be major negative side effects to hot-switching between two mains AC sources that are not in sync?

I am currently thinking about creating a "box" with a wall outlet, solar input and mains source input. This device will use a solar panel to charge an internal lead-acid battery. It's ...
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87 views

Increase the power in an induction heater

I am working on an induction heater of 3 kilowatt. I want to increase the power upto 5 kilowatt. What should I do? I have built zero voltage switching type induction heater. I used a 3uf capacitor ...
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1answer
139 views

Why did Rolls Royce use an inverter in their electric aircraft though they are using axial flux DC motors? [closed]

An inverter converts DC power into AC power. Why did Rolls Royce use an inverter even though battery provides DC power only - exactly what they actually need for the axial flux motor.
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56 views

How to get rid of the buzzing sound in speakers in a Bluetooth + battery + inverter portable setup?

I setup a bike trailer speaker system. There are two JBL EON610s (these are powered speakers with a built in amplifier,) one Bestek Pure Sine Wave 500W inverter, one 60Ah lithium battery, and one ...
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1answer
53 views

Sn74hct04n - always pulls to Ground

I have a very simple circuit in which I make use of an SN74HCT04N logic inverter to pull a line to GND when a button on 5V is pressed. You can see the circuit in my, unfortunately very bad, drawing. ...
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45 views

GDT Core Selection for an MF Switching Action

I am designing an MF (approx. 1.5 MHz) MOSFET driver for an inverter circuit. I’d searched numerous driving strategies (according to the circuit’s needs like high frequency operation, drive-input ...
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3answers
174 views

How to limit current of a generator?

I have a diesel generator that I’m feeding as backup power to a smart Growatt solar off-grid inverter. The solar inverter accepts up to 100A input AC on 220V but the generator starts failing if it ...
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0answers
52 views

Voltage inverter with output drop

Could someone help me on an inverter project?. I set up this project below where the microcontroller generates two PWM inverted 180° from each other with a duty cycle of 50%, 60 Hz. I pass this PWM ...
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1answer
70 views

DIY Ebike BLDB motor controller, low torque, is it my motor?

I've designed a 3 phase inverter for driving a BLDC hub motor. The design (if anyone wants to look at schematics, is here). This works well, the motor spins up and down fine, no worries. However, if I ...
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2answers
101 views

Full bridge inverter without ICs and no PWM

I have just started learning about inverters. The following diagram has been intriguing me for the past few days: Apparently, this inverter works if some PWM is applied to the MOSFET gates. I would ...
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2answers
76 views

Applying DC voltage to a motor driver [closed]

I have a 200VDC power supply from which I want to produce 110VAC 3 phase. For this, I thought of using the most suitable motor drivers. I just wanted to ask you before I buy one. As far as I know, the ...
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1answer
56 views

How to maintain a stable DC current in case of intermittent disconnections

Aplogies if the question sounds very basic. I have a set of LED strips which are powered by a 12v 5A LED driver (which is plugged to my wall socket 220V AC). As the intermidiate connection between the ...
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2answers
243 views

Why does my inverter keep tripping?

I'm doing a self build camper at the moment and have been setting up the electrics. Everything seems to be working well so far however I've been having some issues with my inverter. I have two lithium ...
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1answer
48 views

If a N-MOS gate and P-MOS gate are tied together do you need a pullup or pulldown?

I'm working on MOSEFT logic and I've come across this inverter which uses an N-MOS and a P-MOS. In case it matters one intended use of this is for very low current indicators and the other is in a 6A ...
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2answers
95 views

Solar power without an inverter

Normally, solar-powered homes have an inverter, which is a device that converts DC input voltage to AC. That AC is used to power electronic devices, which may use an adapter to convert back to DC, for ...
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60 views

Proper way to design sine inverter

I have looked through many examples and tutorials of how to design sine wave inverter. But all those tutorials show how to make very basic inverter, which is not meant to be used for any load. Or they ...
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2answers
79 views

Car battery > inverter > battery Maintainer > Same car battery = jumper cables in the trash?

I'm wondering if I have my car battery hooked up to a power inverter hooked up to a battery maintainer hooked up to the same car battery will it prevent me from needing to jumper cable my car? I ...
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1answer
65 views

How to not fry a Raspberry PI while wiring it to a relatively high voltage pin of a frequency inverter?

I'm working with a frequency inverter brand Metaltex type IF20 and a Raspberry PI. With the RPI I'm going to get some digital readings using one of its GPIOs, and for that I'll wire it to a digital ...
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0answers
25 views

Boost with inverter, second harmonic current

I have a boost converter followed by an inverter to supply a load. The output frequency of the inverter is variable but relatively low (~50 Hz). The issue I'm facing is the second harmonic current (at ...
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0answers
30 views

Three Phase Inverter Simulator Code

I am trying to build a controller for inverter. For this, I need build an inverter simulator, which simulates the model of the said inverter to produce a three phase output. I am trying to approach ...

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