can you use swam engine without expression controller

Since the calculated winding temperature is only 90,4☌, thermal damage to the motor windings should not be an issue in this application. In the example given above, the maximum permissible winding temperature is 125☌. It is important to be certain that the final temperature of the windings does not exceed the motor’s rated value found on the data sheet. The steady state temperature increase of the motor ( T) is given by:

R losses in the coil (the heat source) are multiplied by thermal resistances to determine the steady state armature temperature.

Thermal resistance values are specified in temperature increase per unit power loss.

Some motor manufacturers specify a thermal resistance for each of the two thermal paths while others specify only the sum of the two as the total thermal resistance of the motor. In the case of DC motors, there is a thermal path from the motor windings to the motor case and a second thermal pass between the motor case and the motor environment (ambient air, etc.). A large cross section aluminum plate would have a very low thermal resistance, for example, while the values for air or a vacuum would be considerably higher. Motor manufacturers typically provide an indication of the motor’s ability to dissipate heat by providing thermal resistance R thvalues. Thermal resistance (which is the reciprocal of thermal conductance) represents how well a material resists heat transfer through a defined path. The ease with which this heat can be dissipated in a motor (or any system) is defined by thermal resistance.

R losses in the coil is dissipated by thermal conduction through motor components and airflow in the air gap.

Can you use swam engine without expression controller