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Economic and Exploitation Aspects of Reactive Power Compensation Consumed by Laboratory Roller Mixer

Ziółkowski E., Bień A., Smyksy K., Wrona R.

Archives of Foundry Engineering

2015

Vol. 15, iss. 3 spec.

103--106

Results of measurements of selected electrical parameters in supply system of laboratory roller mixer (IODi AGH type) during its operation are presented. Basing on the analysis of measured electric parameters and energy consumption the compensation capacitors system was chosen. The effect of improving the power factor cosφ (and also tgφ) has achieved. After capacitors installation in supply system of the mixer drive the measurements of electric parameters and analysis of harmonic of voltage and current were realised. The results were compared with the limit values from electromagnetic compatibility (EMC) standard PN-EN61000-3-2. The economic and operational effects of reactive power compensation in supply system of the mixer have been highlighted.

Operating characteristics of turbine mixers based on the analysis of power demand of the mixer's drive

Fedoryszyn A., Rudy C.

Archives of Foundry Engineering

2009

Vol. 9, iss. 1

65-68

Optimisation of the turbine mixer's performance during the preparations of the sand mix still remains an important issue as this mixer type is now in widespread use. Monitoring techniques of the system sand mixing include the analysis of electric power demand by the mixer's drive based on measurements of power components. This study shows the operating characteristics of turbine mixers as the function of electric power demand by the drive system.

Investigation of power consumption by a laboratory roller mixer

Ziółkowski E.

Archives of Foundry Engineering

2009

Vol. 9, iss. 1

61-64

This study compiles the recorded values of instantaneous voltage and current levels in a three-phase system designed to power-supply the laboratory roller mixer. The measurement technique is outlined and relevant algorithms are provided for computing apparent power, active and reactive power, as well as power factors cos\fi and tg\fi. Calculation data reveal some fluctuations of power demand in the function of the amount and moisture of the synthetic system sand being mixed. Conclusions were drawn concerning the potential compensation of reactive power demand by an investigated roller mixer.

Compensation of reactive power in the power-supplying system in a roller mixer in laboratory conditions

Ziółkowski E.

Archives of Foundry Engineering

2009

Vol. 9, iss. 3

227-230

Of particular importance are instantaneous voltage and current levels registered in the three-phase power-supplying systems in roller mixer in laboratory conditions. Recorded data allow the apparent power, active and reactive power to be determined as well as power factors cos\fi and tg\fi for the predetermined parameters of the system sand being mixed and for the given roller sets. On the basis of the registered power fluctuations, the capacity of batteries and condensers compensating the reactive power for the mixer are found. Conclusions are drawn as to technical and economic aspects of the applied compensation strategy.