1500 watts inverter for the domestic purposes

[shiliba]

due to the problem of electricity in my country(Tanzania) i wish to invest my brain in designing a portable 1500watts inverter so as to minimize the torture i am getting from the electricity problem,simply no reliable electricty, I wish to make it as a big project up to village area, i welcome engineers,technologiests,hobbists to air out their potential ideas on this remarkable challenge in the development.

 

[Tahmid]

Hi,
Since you want it to be portable, you must use SMPS technology. You have to switch 4 sets of MOSFETs in full-bridge configuration at high frequency and use a ferrite transformer for stepping up the voltage and then convert this to DC. Then you must switch 4 more sets of MOSFETs/IGBTs at 50/60Hz to convert the high voltage DC to AC. You can use quasi-sine output and for pure sine wave, it would be best to use microcontroller and SPWM.

Do you want just an inverter or battery charger as well? I think you'll need battery charger. So, design a charger based on full-bridge configuration controlled by a PWM chip and again using ferrite transformer. You should implement current/voltage limiting to avoid damage to the battery and you have to set charging current depending on your desired charging time.

Then you need protection schemes such as low-battery protection, overload/short-circuit protection, etc.

These are just the basics. You will need a lot of effort from here on in to finish your project. Research on each of the sections to gain more idea. You need to have a good background of electronics to catch on.

Hope this helps.
Tahmid.