Transcription of UNDERSTANDING AND CONTROLLING …
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Henry W. OttHOCELECTROMAGNETICCOMPATIBILITY2001 ByHenry W. OttHenry Ott ConsultantsLivingston, NJ 07039(973) AND CONTROLLINGCOMMON-MODE EMISSIONSIN HIGH-POWER ELECTRONICSPage 1 Henry W. OttHOCELECTROMAGNETICCOMPATIBILITYTHE BASIC PROBLEM! switching Power Supplies and Variable Speed Motor DrivesProduce Large noise Currents Which are Conducted Out tothe Load, as Well as Conducted Back to The Power Source!These Common-Mode noise Currents are the Cause of: Low Frequency Conducted Emission, and High Frequency Radiated Emission!Once One Has an UNDERSTANDING of the noise Source andCoupling Mechanism, a Solution Can be Determined!Power Line Filters in Combination With Proper Load SideFiltering, Grounding, and/or Shielding Will Usually SolveMost Common-Mode Emission 22001 Henry W. OttHOCELECTROMAGNETICCOMPATIBILITYBASIC PRINCIPLE OF EMCR eturn Current to its Source as Locallyand Compactly as PossiblePage 32001 Minimize the Loop Area Henry W.
©Henry W. Ott HOC ELECTROMAGNETIC COMPATIBILITY THE BASIC PROBLEM! Switching Power Supplies and Variable Speed Motor Drives Produce Large Noise Currents Which are Conducted Out to
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Reduction of the High-Frequency Switching Noise, REDUCTION OF THE HIGH FREQUENCY SWITCHING NOISE, High, Switching frequency, Power Supply Noise Reduction, Frequency, Decoupling Techniques, Analog Devices, Frequency noise, High frequency, Noise, Texas Instruments, To-DC Converter Noise Reduction, Reduction, Noise Reduction, High Power Laser Diode Driver Based, High Power Laser Diode Driver Based on Power Converter Technology, Integrating EMI Filters and Appliance Motor Controls