# high power servo motor for an automotive enviroment [closed]

As you know already most high power servo motors in the range of 1.5Kw to 3KW and their respective drivers are AC powered and come mostly in 3phase for reasons beyond the scope of the question.

But There must be an industry common solutions if you want to install a servo system on truck which has 24v batteries. However I have not seen it online.

Is there any that i might have missed ?

So the second thing that comes to mind is to install an inverter ( single or 3 phase ) that should be rugged ( automotive qualified sort of ) .

Is this a realistic solution ?

Note before someone downvote : This is not a shopping advice for a specific product , I just want to find from an electrical engineering point of view what should i look for. and if this is possible due to efficiency and other factors.

## closed as too broad by brhans, Charles Cowie, evildemonic, laptop2d, FinbarrJun 11 at 7:44

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• The first thing that a servo driver does to the (AC) line voltage supply is to rectify and filter it to DC. Thus generating three phase AC just to power a servo drive is not ideal (nor cheap), preferably you'd supply DC to the servo driver and use a DC/DC step up converter to generate the relatively high voltage DC directly. – jms May 21 at 1:25
• Electric trains take 5,000 volts at 2,000 amps at 50Hz, and chop it with IGBTs to drive variable-speed traction motors. – analogsystemsrf May 21 at 1:28
• A servo requires a drive that runs off DC anyways, whether it is converted from AC or coming from a battery. It converts the DC to the specific waveform for the right speed and torque required at the time. – DKNguyen May 21 at 1:31
• A proper pure sine wave inverter is much more complex than a DC/DC converter. An inverter may actually contain such a DC/DC converter as a subsystem. – jms May 21 at 2:11
• An industry solution is to design and build what is required. You first determine if the motor with the needed power rating can reasonably be designed and built for 24 volts. If so, you build or have someone build the motor and build or have someone build a controller for 24 volt dc input. You may find you need a voltage convertor to boost from 24 volts to a voltage that is suitable for a motor of the required power. If this is a one off do it yourself project, get a small engine generator set to provide power to a servo system you can easily find. – Charles Cowie May 21 at 2:54