The demonstrator (live script) shows a preliminary stage of a digital standard. The user can use the demonstrator to determine the losses of the Power Drive System (PDS) and the corresponding energy efficiency class considering the standard. Highlighted in blue is the communication with the standard when using the demonstrator.
In addition to the losses of the entire PDS, the user can also use the demonstrator to determine the losses of the complete drive system (CDM) and the electric motor. He can specify his own values, refer to reference values from the standard or use existing manufacturer data. The exact procedure is described in the following sections.
In the further development of the demonstrator, it will also be possible to determine losses via numerical simulations and to integrate measured values. The following figure shows the decision diagram for determining the losses.
The user can choose between the following input variants for determining the PDS losses:
The data of the reference PDS are taken from the standard. The reference data can be determined according to the method "Maximum Losses in Adjacent Points" or by "Interpolation".
The third option is to manually enter the relative losses at the eight operating points of a real system for the PDS. Manual entries of the losses by the user are highlighted in green. The following figure shows the three variants for determining the losses of the PDS.
The three options for determining the losses are also available for the CDM and the motor. In the "Detailed CDM" variant, the losses can be determined at the component level of the inverter. In the current version, the calculation rules of the standard are used for this purpose.
