Hi, I working on a buck converter to use with a wind turbine to charge a 12 battery bank,
the real problem is I do not understand what is really needed to turn the MosFet on and off . The circuit is working with a resistive load.
1. The mosfet source is connect to the high side of the load. The mosfet is a IRF510.
2. A IR2117 with bootstrap is being used and is referenced to Vs so the bootstrap capacitor voltage can be charged high enough to turn on the mosfet.
3. A 555 timer is used to control the IR2117 @ 10kHz with a Vcc of 12 volts.
4. A permanent magnet alternator is used to supply Vin and can range from 0 to over 200 volts depending on the permanent magnet alternators RPM.
5. A bench power supply is used to supply power to the IC’s. This will be changed later.
The problem is :
When the resistive load is replace with a 12 volt battery the circuit does not work.
I do not understand why the circuit will work for a resistive load and not with a 12 battery as a load. Any suggestion will be greatly appreciated.
This post is a continuation from :
http://forum.allaboutcircuits.com/newreply.php?do=newreply&noquote=1&p=465253
video shows manual operation of PMA and circuit with resistive load:
http://www.youtube.com/watch?v=B3dLzZZ5jKQ
the real problem is I do not understand what is really needed to turn the MosFet on and off . The circuit is working with a resistive load.
1. The mosfet source is connect to the high side of the load. The mosfet is a IRF510.
2. A IR2117 with bootstrap is being used and is referenced to Vs so the bootstrap capacitor voltage can be charged high enough to turn on the mosfet.
3. A 555 timer is used to control the IR2117 @ 10kHz with a Vcc of 12 volts.
4. A permanent magnet alternator is used to supply Vin and can range from 0 to over 200 volts depending on the permanent magnet alternators RPM.
5. A bench power supply is used to supply power to the IC’s. This will be changed later.
The problem is :
When the resistive load is replace with a 12 volt battery the circuit does not work.
I do not understand why the circuit will work for a resistive load and not with a 12 battery as a load. Any suggestion will be greatly appreciated.
This post is a continuation from :
http://forum.allaboutcircuits.com/newreply.php?do=newreply&noquote=1&p=465253
video shows manual operation of PMA and circuit with resistive load:
http://www.youtube.com/watch?v=B3dLzZZ5jKQ
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