The IET is carrying out some important updates between 17-30 April and all of our websites will be view only. For more information, read this Announcement

Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Helpful Answer
  • Replies 3 replies
  • Subscribers 35 subscribers
  • Views 1257 views
  • Users 0 members are here
Options
You may also be interested in

Single Phase to Three Phase Converter

Neil Williams

Hi All

Asking if anyone knows of any suitable equipment to convert a 230VAC (One Phase Three Wire) domestic supply ( via standard socket outlet) to 400VAC (Three phase Four Wire) supply for use with resistive only equipment. I am planning on building a small demonstration switchboard and want to construct and wire as a typical 400V TP&N assembly, to demonstrate energy monitoring hardware via  a few TP&N supplies.

So far I can find similar converters bit most advise these are for use with 3 phase asynchronous motors only

Thanks in anticipation

Neil W

Parents
  • 0

    Most such converters rely on the inductance of the motor windings for proper operation

    Undoubtely true for motor drives. In theory that that need not be the case though - there are plenty of general purpose inverters out there - e.g. for PV or battery sources (both grid-tried and off-grid) or UPSs - that are perfectly capable to driving arbitrary loads. I can't think of a single unit unit I've come across that includes a rectifier first stage in the same unit though (i.e. single phase mains -> d.c. -> 3-phase a.c.) (at least without a batter, making it a UPS), even though it seems to be entirely feasible technically.  Maybe it's just economics - it's probably cheaper to "right size" inverter drives on a few machines that really need 3-phase than to make a large unit that would have to cope with possibly large demands of a workshop and be underutilized 99% of the time. Even less so for a demo project.

       - Andy.

Reply
  • 0

    Most such converters rely on the inductance of the motor windings for proper operation

    Undoubtely true for motor drives. In theory that that need not be the case though - there are plenty of general purpose inverters out there - e.g. for PV or battery sources (both grid-tried and off-grid) or UPSs - that are perfectly capable to driving arbitrary loads. I can't think of a single unit unit I've come across that includes a rectifier first stage in the same unit though (i.e. single phase mains -> d.c. -> 3-phase a.c.) (at least without a batter, making it a UPS), even though it seems to be entirely feasible technically.  Maybe it's just economics - it's probably cheaper to "right size" inverter drives on a few machines that really need 3-phase than to make a large unit that would have to cope with possibly large demands of a workshop and be underutilized 99% of the time. Even less so for a demo project.

       - Andy.

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines