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High power digital amplifier
- 6. Design objectives: Low ripple / fast response Low ripple: 1. Use between 5 and 8 inverter/transformer stages 2. Transformer secondary windings with binary progression, 2V, 4V, 8V…..256V => generate any voltage between -512V to +512V with 2V resolution => low resolution achieved Fast response: 1. IGBT switching time and delay 2. Full voltage swing from -512V to 512V 3. 80µs 4321 D C B DC AC V1 DC AC V2 DC AC Vn DC AC INV1 INV2 INVn DC AC DC AC V1 INV1 INV2 INVn LOAD LOAD TRF1 TRF2 TRFn 2v 4v 256v
- 7. 1 2 3 4 A B C D 4321 D C B A S iz eA 4 N umbe r: D ate: File: S hee t of D ES IGN E D B Y D RA W N BY C HE C KE D B Y D ATE D ATE D ATE C LIEN T D ES C RIP TION R ev is ion: Issue: R EV ISION H IS TOR Y FIGURE - 00 1 A 1 20 12-03 -1 6 20 12-03 -1 6 20 12-03 -1 6 D r A ndri es P utte r D r A ndri es P utte r D r A ndri es P utte r INT E RN A L - D ES IGN & D EV B in ary Inve rter 20 12-03 -1 6 / ISS U E 1 - R E V A BBMLI ADC DEC 32bits8bits ±4V ±310V ±4V ±310V DECODER DELAY ±310V±4V ADC 8bits 32bits POWER SECTION BATTERY BATTERY BATTERY
- 8. 1 2 3 4 A B C DD C B A S iz eA 4 N umbe r: D ate: File: S hee t of D ES IGN E D B Y D RA W N BY C HE C KE D B Y D ATE D ATE D ATE C LIEN T D ES C RIP TION R ev is ion: Issue: R EV ISION H IS TOR Y FIGURE - 06 1 A 1 20 12-03 -1 6 20 12-03 -1 6 20 12-03 -1 6 D r A ndri es P utte r D r A ndri es P utte r D r A ndri es P utte r INT E RN A L - D ES IGN & D EV N on-i nvertin g Op -A m p ci rcui t w i th B B ML I 20 12-03 -1 6 / ISS U E 1 - R E V A R1 R2 V1 V2 V2 = R2 R1 V1 ADC ISOLATED STEP DOWN VOLTAGE SENSOR A1 A2 V3 ±4V ±310V DEC 32bits8bits BATTERY
- 9. 1 2 3 4 A B C DD C B A S iz eA 4 N umbe r: D ate: File: S hee t of D ES IGN E D B Y D RA W N BY C HE C KE D B Y D ATE D ATE D ATE C LIEN T D ES C RIP TION R ev is ion: Issue: R EV ISION H IS TOR Y FIGURE - 06 1 A 1 20 12-03 -1 6 20 12-03 -1 6 20 12-03 -1 6 D r A ndri es P utte r D r A ndri es P utte r D r A ndri es P utte r INT E RN A L - D ES IGN & D EV N on-i nvertin g Op -A m p ci rcui t w i th B B ML I 20 12-03 -1 6 / ISS U E 1 - R E V A R1 R2 V1 V2 V2 = R2 R1 V1 ADC ISOLATED STEP DOWN VOLTAGE SENSOR A1 A2 V3 ±4V ±310V DEC 32bits8bits BATTERY
- 10. 1000kHz 100kHz 50kHz 33kHz 25kHz 5kHz 1μs 10μs 20μs 30μs 40μs 200μs 2 8138Hz 8138Hz 8113Hz 4975Hz 2438Hz 563Hz 4 4050Hz 4050Hz 4050Hz 4050Hz 4050Hz 650Hz 8 2000Hz 2000Hz 2000Hz 2000Hz 2000Hz 575Hz 16 1000Hz 1000Hz 1000Hz 1000Hz 1000Hz 825Hz 32 500Hz 500Hz 500Hz 500Hz 500Hz 500Hz 64 250Hz 250Hz 250Hz 250Hz 250Hz 250Hz 128 100Hz 100Hz 100Hz 100Hz 100Hz 100Hz 256 50Hz 50Hz 50Hz 50Hz 50Hz 50Hz
- 14. + AC DC DC AC DUAL CONVERSION ONLINE UPS TOPOLOGY LOADUTILITYCONNECTION RECTIFIER INVERTER BATTERY
- 16. UTILITYCONNECTION D C A C + LOAD INVERTERDURATHON S1 S2 S3 BBMLI BBMLI = Bi-directional Binary Multi Level Inverter LINE CHOKE