picgak
Advanced Member level 1
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jagdeep
For 2000VA you will be drawing almost 42 amps from a 48v battery. you can use IRF250 instead of IRL3803 in circuit. TR1 should be 44vAc/230vAc. I think Mr.Taners circuit is for 500VA. If it is so the secondary turns for the CT should be reduced dividing the current turn Nos by 4 for 2000VA. The resistors R28 and R29 may be increased to 10k. Since TLP250 rating is only upto 35v a regulated power supply 15v may be used. The points marked U+ should be 12vdc only. 48v is applied only to the upper half of the H bridge mosfets drain point instead of U+. I think this will solve your problem.
regards
ani
For 2000VA you will be drawing almost 42 amps from a 48v battery. you can use IRF250 instead of IRL3803 in circuit. TR1 should be 44vAc/230vAc. I think Mr.Taners circuit is for 500VA. If it is so the secondary turns for the CT should be reduced dividing the current turn Nos by 4 for 2000VA. The resistors R28 and R29 may be increased to 10k. Since TLP250 rating is only upto 35v a regulated power supply 15v may be used. The points marked U+ should be 12vdc only. 48v is applied only to the upper half of the H bridge mosfets drain point instead of U+. I think this will solve your problem.
regards
ani