ABB NOCH 滤波器选型手册.pdf

ABB Industry Oy Drives Products Instruction 3AFE xxxxxx dudt filter selection guide.DOC Dept. EJQ Date 29.12.1998 Made by Marko Ven?l?inen Checked / Accepted by Matti Laitinen Revision E Page 1 / 12 Effective: 29.12.98 Supersedes:03.04.98 ACS600 DU/DT FILTER SELECTION GUIDE Output voltage of ACS600 2 Peak voltage and du/dt at the motor terminals 2 Voltage vaweform 3 Applicable motors according to the service life of the insulation system 5 Random wound motors 5 Form wound motors 5 du/dt filters 6 The enclosure class of the filters 6 A guide for adding the filter option to an Acknowledgement of Order 6 Notes on installation of du/dt filter KITs 7 Standard applications 7 Other applications 9 Pull-out torque with du/dt filter 11 EMC 12 CE 12 Bearing currents 12 APPENDIX 1: du/dt Filter Installation Guide 12 ABB Industry Oy Drives Products Instruction 3AFE xxxxxx dudt filter selection guide.DOC Dept. EJQ Date 29.12.1998 Made by Marko Ven?l?inen Checked / Accepted by Matti Laitinen Revision E Page 2 / 12 Effective: 29.12.98 Supersedes:03.04.98 Output voltage of ACS600 Peak voltage and du/dt at the motor terminals The output voltage waveform of an inverter creates voltage spikes at the motor terminals in excess to dc-bus voltage. The combination of these voltage spikes and high du/dt-value of IGBT inverter output means additional stresses to motor insulation. This may shorten the life of the motor. In the graphs below the peak value ? LL and the rate of change du/dt of the voltage mesured at the motor terminals are seen as a function of the motor cable length. ? LL is scaled to nominal line-to- line voltage ULLnom. The scale of du/dt is kV/μs. The values of the graphs are typical values measured for ACS600 feeding a nominal load (Udc ? 1.35* ULLnom ) to a rated motor. In case of regenerating or braking the value of ? LL is appr. 20 % higher. The values seen in the first graph are mesured without any output filtering. In the second graph the values are measured w