Yes it is except EMC problems. This module have three half bridges. I used two half bridges and four dicrete transistors instead. It works but would be simpler to just buy this building block if available.
With direct access to the switches I will be able to implement better control algorithm later on, change type of motor and not be stuck with builtin voltage since I use external power supply. Six half bridges may be used for two three phase motors or three DC motors. Nicklas Karlsson On Tue, 25 Nov 2014 10:47:14 -0600 TJoseph Powderly <[email protected]> wrote: > Most of this discussion is past my knowledge level > but this may be easy to build ( not a module but few parts ) > and 250w to 2kw and fairly high voltage > HTH > http://www.irf.com/technical-info/appnotes/an-1044.pdf > regards > TomP > tjtr33 > > On 11/25/2014 10:15 AM, Karlsson & Wang wrote: > > Control signals are the same regardless of current and voltage rating so > > the same chip for example a MCU or FPGA could be used for signal generation > > regardless of size which is the reason why I want them as separate modules > > with or without the control logic. The second reason is inverter bridge > > stay the same for different type of electric motors although control logic > > may have to be changed for example by using different software. > > > > As is now I find totally integrated drivers without possility to change > > software. With this approach there is one power factor corrector and > > possible voltage transformation in each driver which make them relatively > > expensive. Components for an inverter running from for example a 48 volt DC > > power rail is cheap. Although not optimal it will also work from a lower > > voltage. One large power converter instead of several small will also be > > cheaper. There are also several several or more cheap micro controllers > > available with special purpose built hardware for motor control to generate > > the control signals, some software libraries are also available. > > > > Nicklas Karlsson > > > > > > > > > > > > On Mon, 24 Nov 2014 09:36:58 -0500 > > John Kasunich <[email protected]> wrote: > > > >> You don't mention voltage or current ratings. They are pretty relevant. > >> The bigger you go the more demanding the power circuit design becomes, > >> and the less likely you are to find pre-built all-in-one solutions. > >> > >> > >> On Mon, Nov 24, 2014, at 05:46 AM, Karlsson & Wang wrote: > >>> I have not been able to find simple inverters or half bridges which is > >>> the basic building block of an electric motor driver regardless of type > >>> or size. Do anybody know about?? > >>> > >>> Currently I am developing these half bridges myself. It works great but > >>> it is time consuming and the result is not the best. Then half bridges > >>> with logic input signals are available there are cheap development boards > >>> available from several suppliers so this is really a missing key part not > >>> readily available. > >>> > >>> > >>> > >>> > >>> > >>> Nicklas Karlsson > >>> > >>> ------------------------------------------------------------------------------ > >>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > >>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards > >>> with Interactivity, Sharing, Native Excel Exports, App Integration & more > >>> Get technology previously reserved for billion-dollar corporations, FREE > >>> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk > >>> _______________________________________________ > >>> Emc-users mailing list > >>> [email protected] > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >> > >> -- > >> John Kasunich > >> [email protected] > >> > >> ------------------------------------------------------------------------------ > >> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > >> from Actuate! Instantly Supercharge Your Business Reports and Dashboards > >> with Interactivity, Sharing, Native Excel Exports, App Integration & more > >> Get technology previously reserved for billion-dollar corporations, FREE > >> http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ------------------------------------------------------------------------------ > > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > > from Actuate! Instantly Supercharge Your Business Reports and Dashboards > > with Interactivity, Sharing, Native Excel Exports, App Integration & more > > Get technology previously reserved for billion-dollar corporations, FREE > > http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > ------------------------------------------------------------------------------ > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! 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Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
