mfilippa
Junior Member level 1
- Joined
- May 24, 2004
- Messages
- 17
- Helped
- 1
- Reputation
- 2
- Reaction score
- 0
- Trophy points
- 1,281
- Location
- Boston, MA
- Activity points
- 304
Hello,
I need to synchronize an inverter to the power grid. So far I can easily track 3-phase voltages with high immunity to noise and other power failures. I am using a abc->dq conversion (3phase to 2phase, rotating frame) and with this I can easily track the phase, the sequence and peak voltage.
I need to track now single phase signals. I have tried with PLL, but as far as I know, you need some knowledge of the signal to be tracked (must know approx. frequency and have a normalized amplitude).
Does anybody have any idea of how to track a sine wave of unknown amplitude, frequency and phase ?
Thanks
Mariano
I need to synchronize an inverter to the power grid. So far I can easily track 3-phase voltages with high immunity to noise and other power failures. I am using a abc->dq conversion (3phase to 2phase, rotating frame) and with this I can easily track the phase, the sequence and peak voltage.
I need to track now single phase signals. I have tried with PLL, but as far as I know, you need some knowledge of the signal to be tracked (must know approx. frequency and have a normalized amplitude).
Does anybody have any idea of how to track a sine wave of unknown amplitude, frequency and phase ?
Thanks
Mariano
