1. L

    Ideas for using a 24V 40Ah LiFePO4 battery with damaged cell to power a 12V 500W inverter?

    I acquired the battery in subject from one of the local recycle groups. It consists of nominally sixteen 3.2V 20Ah LiFePO4 pouch cells arranged in 8s2p configuration (pouches in pairs soldered to a PCB that puts them in series). One of the pairs developed a fault and was desoldered and removed...
  2. I

    Solar module arrangement question

    I'm not sure if this is the right place to post this, so please advise if this needs to be moved. The question deals with 4 mis-matched solar panels on an RV roof. Yes, it is a bad design, but the RV mfg is no longer in business, so there you go. I am somewhat knowledgeable on solar array...
  3. P

    Closed loop control of three phase sine pwm voltage source inverter

    Hi, I am trying to design a closed loop inverter in Simulink, I tried to implement the control technique used in the reference design available in Matlab Help section, but the output is not the expected value. When i simulate the reference design the output is exactly the desired value. Kindly...
  4. P

    LC Filter for three phase inverter

    Hi , I am designing a closed-loop sine pwm three-phase inverter with an output power of 60kVA with a phase RMS voltage of 115. I am struggling to design the LC filter for the system to convert the square wave output into a sine wave. Please help with the design of the filter. Thank you...
  5. G

    Why Common mode voltage is significant in Inverters

    Dear all, What is common mode voltage in a H bridge inverter ? from sources I understand that Vcm=(Vao+Vbo+Vco)/3 but what is its physical significance ... especially in Transformerless inverter. How this common mode voltage will be made constant .. How or why it will not be constant FYI:I...
  6. pratyush13

    How does Noise is effected by inverter switch technique, output current, modulation index?

    How is the noise on the supply side effected by DC bus voltage, rise and fall (di/dt, dV/dt), switching frequency and techniques, modulation index and load current? Is there any formula or analysis we can do? Analytically?
  7. Jamiel92

    Alternative open frame power supply solutions?

    After my initial newbie post, I have decided I want to use an open frame power supply for my project. (Low power fan heater) I have looked at a few and I'm not sure whether I am either looking incorrectly or what I am looking for is just out of my price range and a cheaper option doesn't exist...
  8. Fab64

    High Current negative voltage from a positive one

    Hi, For a project I am working on I need to generate a negative voltage from a single positive one. More precisely, I need -18V from +18V with at least 1A. For the first prototype, I am using an LT1054 (http://www.ti.com/lit/ds/symlink/lt1054.pdf) powered @+15V and everithing works as...
  9. I

    MEAN WELL TS-1000 Inverter not working

    Hi, I am using a MEAN WELL TS-1000 inverter. Currently the inverter got an issue such that when the inverter is switch on it will automatically turn off within less than 5 seconds and then it starts to blink the status LED in orange color. If anyone has an experience with this kind of inverter...
  10. P

    Variable Frequency Drive - Optimum lathe VFD problems - irregular, stuttering speed

    Hi Folks, this is a preliminary, looking for anyone who has come across a similar issue before, before I start trying to reverse engineer the PCB etc. (Which I'm not a big fan of as it would really need live testing.) I have a 230V AC 50Hz (single phase) Optimum Lathe, which has a variable...
  11. calmd

    LCL Filter Plant Control

    Hi everyone! I don't know if this is the place to ask Control Theory related questions, but it's for modelling a power electronics circuit so I thought I could at least try. I have to design a grid connected inverter in Simulink using the PLECS toolbox and I ran into some problems when designing...
  12. D

    Can I connect Solar and Wind DC energy to the same battery bank?

    Hi there, I am looking at installing a solar and wind energy system on a house. The solar panels produce DC and the wind AC but the winds AC is passed through a controller which converts it to either 24 or 48VDc. Therefore both solar and wind will be producing DC. I intend for this to be an...