looking for active/reactive energy (or power factor) metering chip

hi all,
I'm working on a project for building a "power factor correction" product, it is a microcontroller based and should use a chip (or more)
to mesure the active and reactive power then switch in and out some capacitors in parallel with the load to compensate for the consumed reactive power.
well, all of this is very fine but the problem is that readings should be taken from a three phase power line in the following manner (assuming balanced load ): * the voltage reading is taken from line to line, * the current reading is taken from the third phase line ( the one that is not used with the line-to-line voltage reading )
what I'm looking for is a chip that takes those readings and compute the active and reactive power (or energy), I'm already familiar with ADE7753 that is produced by analog devices and it meets all of my demands but it takes single phase reading and current (from the same line).
do any one knows a chip that can measure active and reactive energy using the readings that I'm taking ? or can any one knows a way to tweak normal single phase chips to do this job ?
Thanks, Sheref H. Younan
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A lot of motor protectors are 2 CT's on a 3 phase system. They monitor 2 phases and assume the third. Even the older Honeywell and JCI energy management systems used (usually) one CT and then a formula.
I am not aware of anyone that makes a chip that your going to get your hands on. I know CH now Eaton has some equipment like this in the market place already. Contact the manufacture of the chip and ask them. Could you use 3 chips?
Me thinks your heading into a area of very limited return. Most cap banks I have worked around are either in or out. Good luck with your endeavor.
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