Slide 1: Output filter solutions
Output filter solutions Output chokes and filters for frequency converters TDK Electronics AG Magnetics Business Group Munich, Germany March 2022
Slide 2: EMC output filter solutions
EMC output filter solutions © TDK Electronics AG 2022 Output filter solutions Output chokes and filters for frequency converters MAG PEMC PM 03/22 2
Slide 3: Output filter concepts
Output filter concepts dv/dt chokes Sine-wave filters Sine-wave EMC filters B86301U*R000/S000 B84143V*R227/*229/*230 B84143V*R127 Converter Motor Shielded motor SineFormer® line necessary M for dv/dt and sine-wave filters Converter Motor Converter Motor Converter Motor Forms sine wave Forms sine wav
Slide 4: Output filter concepts: Advantages & disadvantages
Output filter concepts: Advantages & disadvantages Reduce dv/dt peaks significantly – No reduction of acoustic noise dv/dt chokes Low-cost solution – Shielded motor cables necessary – Motor line is limited to approx. 50 m Reduce dv/dt peaks significantly Reduction of eddy current losses Forms sine w
Slide 5: 3-phase motor chokes for drives B86301U*R000/S000
3-phase motor chokes for drives B86301U*R000/S000 Motor chokes reduce the voltage stress at the motor and the dv/dt increase at the frequency converter output Features ● 8 to 1500 A/ 520 V ● 1% impedance reactor ● Easy to install ● Low weight ● Compact design Converter Motor ● Design complies to IEC
Slide 6: Sine-wave output filter series B84143V*R227/*229/*230
Sine-wave output filter series B84143V*R227/*229/*230 ● Current range from 4 A up to 390 A/520 V ● 690 V version: up to 320 A ● Designed for motor cables up to 1000 m ● IP21 housing available for *229/*230 ● UL approved isolation system ● From stock delivery ● 720 A in development Converter Motor ©
Slide 7: SineFormer®: Best output filter solution
SineFormer®: Best output filter solution ● Commercial advantages System-cost savings due to the use of unshielded cables Automatic cost savings from a motor-cable length of approx. 100 m Compact concept! ● Technical benefits Longer life cycle of the motor, motor noise reduction, substantial compen
Slide 8: SineFormer®: Test results and technical data
SineFormer®: Test results and technical data ● Functional tests up to 1000 m unshielded cable passed Ordering code B84143V****R127 ● EMC tests with 300 m unshielded cable passed (radiated emissions) Rated voltage 520 V AC (600 V AC) Rated current (40 °C) 6 to 180 A (320 A) Motor frequency 0 to 100 H
Slide 9: SineFormer® B84143V*R127: Technical data
SineFormer® B84143V*R127: Technical data Characteristics and ordering codes IR* Terminal ∆V PL Rtyp Approx. Ordering code Approvals cross section weight A mm2 % W mΩ kg VR = 520 V AC 6 4 7 45 290 9 B84143V0006R127 – – 11 4 5 26 46 9 B84143V0011R127 x x 16 6 7 38 32 11 B84143V0016R127 x x 33 10 8 92
Slide 10: SineFormer®: Circuit diagram
SineFormer®: Circuit diagram SineFormer® features ● dv/dt reduction ● Common-mode current reduction ● Sine wave signal phase to phase ● Field strength reduction ● Current peak reduction ● Conducted emission reduction U1 U2 V1 V2 W1 W2 © TDK Electronics AG 2022 Output filter solutions Output chok
Slide 11: SineFormer®: Measurements (1)
SineFormer®: Measurements (1) Measurements of the converter output ● Phase-to-phase voltage is not sinusoidal Creation of interferences and bearing currents Phase to phase voltage Phase current Measurements of the filter output (300 m motor line) ● Phase-to-phase voltage is sinusoidal Asymmetric ●
Slide 12: SineFormer®: Measurements (2)
SineFormer®: Measurements (2) Typical value for 4 kHz switching and 50 Hz motor frequency Without output filter With SineFormer® dv/dt ≈ 480 V/170 ns ≈ 2.8 kV/μs dv/dt ≈ 440 V/2 μs ≈ 220 V/μs Δ:2.0 μs Tek stop 58 Acqs Tek stop 32 Acqs @:-600 ns 500 MS/s [ ] Δ:170 ns 25.0 MS/s [ ] T T @:-40 ns C1 ise
Slide 13: SineFormer®: Measurements (3)
SineFormer®: Measurements (3) Typical value for 4 kHz switching and 50 Hz motor frequency Converter output SineFormer® output Current 1 2 Current 1 2 100% 100% 80% 80% 60% 60% 40% 40% 20% 20% 0% Frequency [Hz] 0% Frequency [Hz] 50 200 350 500 650 800 950 1100 1250 1400 1550 1700 1850 2000 2150 2300
Slide 14: SineFormer®: Measurements (4)
SineFormer®: Measurements (4) dBμV/m 80 70 Without output filter Limits exceeded 60 Converter and unshielded cable 50 EN 61800-3 category C2 (without SineFormer®) 40 30 Limits kept 20 Converter and unshielded cable (with SineFormer®) With output filter 10 0 30 100 1.000 MHz Field strength: Goodbye s
Slide 15: SineFormer®: Measurements (5)
SineFormer®: Measurements (5) dBμV/m 80 70 60 50 EN 61800-3 category C2 40 20 m unshielded motorline 30 Coherent results at different motor cable lengths 20 10 150 m unshielded motorline 0 30 100 1.000 MHz Field strength performance is not dependent on cable length! © TDK Electronics AG 2022 Outpu
Slide 16: SineFormer®: Measurements (6)
SineFormer®: Measurements (6) Radiation measurement vertical antenna dBμV/m 80 (worst case) ● Converter 2.2 kW/400 V 70 ● Filter 11 A 60 ● 300 m motor cable EN 61800-3 category C2 50 ● 8 kHz clock frequency SineFormer® 40 with unshielded motorline 30 With an increase of the cable cross-section, this
Slide 17: Bearing current measurements with sine-wave filters
Bearing current measurements with sine-wave filters Measurement bearing current with sine-wave filter ● Drive 2.2 kW/400 V ● 25 m motor line ● 4 kHz clock frequency ● 5 Hz motor frequency Common-mode current Inverter Load at the motor FFT: High-frequency currents provoke bearing currents P1: max (C1
Slide 18: Bearing current measurements with SineFormer®
Bearing current measurements with SineFormer® Measurement bearing current with SineFormer® ● Drive 2.2 kW/ 400 V ● 25 m motor line ● 4 kHz clock frequency Common-mode current at the motor ● 5 Hz motor frequency Inverter Load FFT: High-frequency parts are eliminated P1: max (C1) P2: pkpk (C1) 12.4 mA
Slide 19: www.tdk.com
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