About PV or Wind Power Converter
About PV or Wind Power Converter
(OP)
Hello, İf PV panels or windmill rectified output have not constant output voltage, how can we get constant a d.c voltage, İ am confused since the input d.c is variable and cant imagine how we get it constant with a battery or something else, also can u tell me what happens if a source like these one is connected parallel by a battery , i mean the output of this combination, batteries output is inclined to be steady for a long time but if source voltage changes drastically so what happens? is there any protective measures like cut-off the connection if a margin is exceeded? pls introduce these systems briefly to me. best regards...






RE: About PV or Wind Power Converter
RE: About PV or Wind Power Converter
For wind or PV, electronic DC-DC converters are used for battery charging, commonly known as a charge controller. They take input at range of voltage and convert it to match with the required battery voltage. It's common for PV arrays to be wired for relatively high output voltage (several hundred volts) and use a charge controller to feed a 24 or 48V battery system. Most have programmable battery charge cycles for bulking, absorption and equalization functions. They usually have numerous protection functions to handle out-of-range input or output voltages or currents. The more you want to spend, the more flexibility you will get.
Take a look at the O&M manual for a Xantrex or Outback charge controller.
Alan
"The engineer's first problem in any design situation is to discover what the problem really is." Unk.
RE: About PV or Wind Power Converter
RE: About PV or Wind Power Converter
Neil
RE: About PV or Wind Power Converter
RE: About PV or Wind Power Converter
xnuke
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RE: About PV or Wind Power Converter
RE: About PV or Wind Power Converter
This is typical for small wind systems. The unit uses a permanent magnet alternator connected to a rectifier and then a battery.
Large wind systems are typically grid tied and do not use batteries. Solar also typically does not use batteries. Both would only use batteries if there is an off-grid requirement. The controller converts the raw output voltage directly to power line voltage.