Hello, I need to build an inverter that can handle around 5500 watts continuous run. I plan to feed this inverter from either one 120v battery bank or two 60v banks running parallel, ten 12v batteries either way. I need an inverter design that is durable (start/run compressor motors, electric heaters...) and, because Im working with a limited amount of amp hours, something that is as efficient as posable. Im considering using a McMurray-Bedford SCR Inverter design with an Ott filter for this, but as I dont know a lot about Inverters, Im wondering how this design compares to other designs, as far as efficiency and durability. If some one could help me with this it would be very helpful.
Back in the late 60s I was part of a design team that tried to implement Ott filters on bipolar transistor inverters but failed after many attempts and varied approaches. The maths "worked" but the filter did not.
Author
Bobbo
Posted
6/24/2009 11:50:44 AM
Response topic
5500w pure sine inverter
Message
PIC MICROCHIP 16F72 Based Design With Real Sine Wave Output. PIC MICROCHIP 16F72 Based Design with absolute and stable output voltage and frequency. Sophisticated PWM technology and comprehensive display. Tightly regulated output voltage and frequency. Wide input voltage range. High Efficiency. Superior power quality. Over Temperature Protection. Short Circuit Protection. Inverter to mains change over at zero crossing. Soft Start. Quite operation of AC motors as well as the other Inductive load Unlike modified Sine wave. LCD Panel Display LCD Indications for battery Level & load Levels with Bar Graph Display of All Protections like Thermal, Short Circuit, Battery Low/High Cut, Overload
contact : chandeljnp@gmail.com
Author
Anshuman Chandel
Posted
10/19/2007 8:19:06 PM
Response topic
Sine wave Inverter with Ott filter
Message
Details of Ott filter can be found in the book "Principles of Inverter Circuits" by B.D. Bedford & Richard G. Hoft, (available at amazon.com). But more efficient high frequency sine pwm methods are used now instead low frequency switching with bulky & costly filters.
Author
Selvavel
Posted
10/18/2007 4:04:58 AM
Response topic
5500w pure sine inverter
Message
I noticed that you refered to an OTT FILTER. I have been trying to find information on this filter, but I cannot find any. Please tell me where I can find anything on the Ott Filter. Thanks, Manny manceb@cablespeed.com
Author
Bucky
Posted
10/11/2007 3:51:22 PM
Response topic
Inverter
Message
The inverter design using the abovementioned technology is outdated. There are many far better solutions avilable using power MOSFETS or IGFETS for the waveform development. If you need help and I think you do, please contact me. We have many years experience in this field and can save you many months as well as dollars developing this technology. See my ad in help with your SMPS in the form. Mervyn Mntoya mtmontoya@cox.net 480-513-6885
