| ??? 08/21/08 21:58 Modified: 08/21/08 22:01 Read: times |
#157650 - The driver cktry and the waveforms Responding to: ???'s previous message |
I am using IR21362 as the driver IC. See the driver ckt..
It is surprising that strange Vce waveforms occurs randomly and I have not noted these again (for now...). But, looking closely at the gate signals revealed that: + gate signals for no dc voltage bus phase 1 phase 1 phase 1 +but when dc voltage is applied, here is what I get Phase II Vce and gate voltages another instance at the same phase I hope expert eyes here can help me figure out what is fishy going in here. By the way, I am using this IGBT module. |
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| Topic | Author | Date |
| 3-phase Inverter IGBT phase waveform | 01/01/70 00:00 | |
| you are going to burn the motor | 01/01/70 00:00 | |
| Its a sine PWM | 01/01/70 00:00 | |
| ...or the IGBTs! | 01/01/70 00:00 | |
| i had same problem on a Hitachi 48kw inverter | 01/01/70 00:00 | |
| Gate Drive | 01/01/70 00:00 | |
| The driver cktry and the waveforms | 01/01/70 00:00 | |
| Bootstrap capacitors problems | 01/01/70 00:00 | |
| Some hints | 01/01/70 00:00 | |
| another interesting waveform | 01/01/70 00:00 | |
| No, no.... | 01/01/70 00:00 | |
Voltage rating of bootstrap capacitor | 01/01/70 00:00 |