Komponentlista

- Komponenter för en enhet

Diverse

*Transformator 80VA, 2 X 18V, MCFE080/18 (Farnell, 953-1831)

*5st Säkring 5 x 20 mm 3.15 A Snabb, F, 0001.1009 (ELFA; 33-173-68)

*4st Öppen säkringshållare H=10,4 mm ø 5 x 20 mm, 05200001N (ELFA; 33-154-39)

*3st Kopplingsplint för kretskort, raster 5,0 3pol 3-P, MKDS 3/3 (ELFA; 48-336-41 )

*4st DIL-8 socket

*2st Ratt utan streck 14.5 mm svart, 020-3420 (ELFA: 38-001-82)

*2st Täcklock utan streck 14.5 mm svart, 040-3020 (ELFA: 38-008-93)

*Plexiglas 610x1250x4 mm (Farnell, 521-401)

*Dragavlastning vit, 706 VIT (ELFA: 55-016-89)

*Apparatkabel 2P EU 2 m sv avmantlad, EK 2 S (ELFA: 43-206-78)

*24st Spacer, M4X10-NI (Farnell, 146-6853)

*25st Cylindrisk skruv, Pozidriv M4 12 mm (ELFA: 48-019-24)

*36st Spacer, M4X40-VZK (Farnell, 146-6728)

*10st Socket, 4MM, SAFETY, Black (Farnell, 101-1407)

*10st Socket, 4MM, SAFETY, Red (Farnell, 101-1408)

*10st Socket, 4MM, SAFETY, Blue (Farnell, 101-1409)

*10st Socket, 4MM, SAFETY, Yellow (Farnell, 101-1410)

*10st Socket, 4MM, SAFETY, Green (Farnell, 101-1411)

*3st 15nF avkopplingskondensatorer

* OHMITE - 13FR150E - RESISTOR, R15, 1%, 3W (Farnell: 163-3920)

Likriktarbrygga & komponenter

*4st Likriktardiod R6 1000 V 6 A, 6A 100 (ELFA 70-039-65)

*Radiell aluminium-elektrolytkondensator 4700uF 50 VDC 4m (Farnell, 945-2893)

*Radiell aluminium-elektrolytkondensator 470 µ F 100 VDC (ELFA; 67-043-24)

*Radiell aluminium-elektrolytkondensator 22uF/50V 2mm (ELFA 67-013-61)

*Effektmotstånd HS100 220ohm 5% 100W (ELFA 60-682-09)

*Filterdrossel 1000uH/1A (ELFA 58-700-50) 12V-matning

*Kretskortstransformator 3.0 VA 12 VAC (1x), EI306 3365 (ELFA; 56-175-84)

*DC/DC-omvandlare 6 W DIL24, TEN 5-2422WI (ELFA; 69-523-37)

*Likriktarbrygga 700 V 1.5 A DIL, DB 157G (ELFA; 70-084-85)

*Radiell aluminium-elektrolytkondensator 4700uF 50 VDC 4m (Farnell, 945-2893)

*Radiell aluminium-elektrolytkondensator 100 µ F 100 VDC (ELFA; 67-043-22)

*Drossel radiell 0.01 mH 2.6 A ±20%, 744772100 (ELFA; 58-578-24) PWM

*Keramikkondensator 4.7 nF 100 VDC 5.08 mm (ELFA; 65-714-91)

*Keramikkondensator 10 nF 50 VDC 5.08 mm (ELFA; 65-715-41)

*2st Kolbanepotentiometer linjär, PC16SH10CP06-223A202 (22k/lödör) (ELFA; 64-252-84)

*Operationsförstärkare DIL-8, LF411CN (ELFA; 73-275-25)

*Timerkrets DIL-8, NE555P (ELFA; 73-042-65)

*2st Metallfilmsmotstånd 10 kΩ 0.6 W ±1 %, MBB/SMA0207 (ELFA; 60-592-39)

*2st Metallfilmsmotstånd 22 kΩ 0.6 W ±1 %, MBB/SMA0207 (ELFA; 60-592-51)

*2st Diod DO-35 75 V, 1N 4448 (ELFA; 70-180-21) BUCK

*2st Schottkydiod DO204AR 100 V 5 A (ELFA: 70-031-97)

*MOSFET IRF 840PBF TO-220AB N 500 V 8 A, (ELFA: 71-162-05)

*Bridge DIL-8, IR2117 (ELFA: 73-434-03)

*Kylelement, FK 237 SA 220 H (ELFA: 75-602-11)

*Radiell aluminium-elektrolytkondensator 22 µ F 100 VDC (ELFA: 67-043-20)

*Radiell aluminium-elektrolytkondensator 2.2 µ F 100 VDC (ELFA: 67-043-17)

*Keramikkondensator 1 nF 100 VDC 5.08 mm (ELFA: 65-713-84)

*Toroiddrossel 2500 µH 1 A, TI-53106 2500UH/1A (ELFA: 58-700-76) PFC

PFC: TEXAS INSTRUMENTS - UCC28019P - PFC CONTROLLER, CCM, PDIP8 (Farnell: 1366267)

Lbst: D=38mm, Toroiddrossel 400 µH 3.15 A, TI-53114; (ELFA: 58-702-09) Boost diode: Schottkydiod DO204AR 100 V 5 A (ELFA: 70-031-97)

Gate diode: Schottkydiod DO204AR 100 V 5 A (ELFA: 70-031-97) Bypass diode: Likriktardiod R6 1000 V 6 A, 6A 100 (ELFA 70-039-65) Switch: MOSFET TO-220AB N 500 V 8 A, IRF 840PBF (ELFA: 71-162-05) Kylfläns_mosfet: Kylelement, FK 237 SA 220 H (ELFA: 75-602-11)

Rsense: OHMITE - 13FR150E - RESISTOR, R15, 1%, 3W (Farnell: 163-3920) Risense: Metallfilmsmotstånd 220 Ω 0.6 W ±1 % (ELFA: 60-591-98)

Rfb1: Metallfilmsmotstånd 1 MΩ 1 W ±1 % (ELFA: 60-599-58) Rfb2: Metallfilmsmotstånd 100 kΩ 0.6 W ±1 % (ELFA: 60-592-67) Rvcomp: Metallfilmsmotstånd 18.2 kΩ 0.6 W ±1 % (ELFA 60-737-04) Rvins1: Metallfilmsmotstånd 1.3 MΩ 0.6 W ±1 % (ELFA: 60-592-94) Rvins2: Metallfilmsmotstånd 100 kΩ 0.6 W ±1 % (ELFA: 60-592-67)

Rgate: Metallfilmsmotstånd 3.3 Ω 0.6 W ±1 %, MBB/SMA0207 (ELFA: 60-591-53) Rgate2: Metallfilmsmotstånd 10 kΩ 0.6 W ±1 %, MBB/SMA0207 (ELFA; 60-592-39) Cin: Plastkondensator axiell 1 µF 160 VDC , 90 VAC, MPL 116 4100 (ELFA; 65-465-01) Cisense: Keramikkondensator 1.2 nF 100 VDC 5.08 mm (ELFA: 65-733-80)

Cout: Radiell aluminium-elektrolytkondensator 2200 µF 63 VDC (ELFA: 67-044-73) Cvsense: Keramikkondensator 100 pF 200 VDC 5.08 mm (ELFA: 65-732-40)

Cicomp: Keramikkondensator 820 pF 200 VDC 5.08 mm (ELFA: 65-733-64) Cvcomp: Keramisk kondensator SMD 10 µF 16 V 1210 (ELFA: 65-721-40) Cvcomp_p: Keramikkondensator 470 nF 50 VDC 5.08 mm (ELFA: 65-742-63) Cvins: Keramikkondensator 1 µF 50 VDC 5.08 mm (ELFA: 65-743-05)

Vcc-c1: Keramisk kondensator SMD 0.1 µF 50 VDC 1206 (ELFA: 65-776-88) Vcc-c2: Keramisk kondensator SMD 1 µF 50 V 1206 (ELFA: 65-721-10)

Vcc_cin: Radiell aluminium-elektrolytkondensator 47 µF 50 VDC (ELFA: 67-043-01)

Uppsala Universitet Department of Engineering Sciences,

Division of Electricity 2010-08-04

Documentation for SMPS laboratory equipment used in the course Power

Electronics 1TE046 5HP

Degree project by Joel Ebersson 2010

joeb7273@student.uu.se Supervisor: Olle Svensson

Instructions

This equipment is intended for laboratory experiments to show the function of some power electronic devices. The instructions should be read carefully before use to avoid damage to the equipment.

Fig.2 The main sections of the unit

Power

The unit is supplied with 230VAC by a euro wall-plug. Internally there are two transformers;

one big that is 230VAC -> 2*18VAC and one on the circuit board that is 230VAC -> 12VAC.

The dual 18VAC input is fused with one fuse on each line. Those 18VAC lines are directly wired to the connection board and have to be externally connected to the rectifier bridge. The other transformer (230VAC->12VAC) is internally connected to a rectifier bridge and an output filter and lastly to a TRACO which is used to supply the circuits with a stable 12VDC.

The output from the TRACO is directly wired to the connection board, where ground, +12VDC and -12VDC can be connected externally to the various circuits. The Common output from the TRACO is connected to ground planes on the printed circuit board (PCB).

Each circuit (PFC, Buck, PWM) need their own separate +12VDC supply. This is done by connecting external cables to the corresponding sockets on the connection board.

Fig.3 The circuit board with its sections

Rectifier Bridge

The rectifier bridge consists of four rectifier diodes with a rating of 1000V/6A. They are wired to the connection board. External wires are connected from the 18VAC source to the blue/yellow sockets on the rectifier. The two 18VAC lines can be connected in series to get 36VAC, but be careful how the connection is made!! Only connect the upper yellow socket to the lower blue socket on the both 18VAC lines. NEVER blue to blue or yellow to yellow!!

The Shunt resistor on the connection board can be connected in series with the AC line before the rectifier bridge to measure the input current. The current may be a little distorted due to measure noise from the wires.

The rectified output from the rectifier bridge can be connected to the PFC IN+/- on the PFC circuit or they can be connected to a load and various filters.

Attention!

DO NOT connected two grounds from an oscilloscope to different points on the connection board, unless it is an oscilloscope with floating grounds. For example, do not try to measure both the input current across the shunt resistor and the input voltage across the input at the same time with a normal oscilloscope. This will result in a shortcut since the grounds are internally connected in the oscilloscope.

PFC/Boost

The Power Factor Corrector (PFC) is used to correct the drawn input current. The rectifier bridge with a smoothing capacitor and filters distorts the input current and can make it out of phase with the input voltage, thus making the power factor decrease. A PFC can be used to make the input current sinusoidal and to correct the phase. A smoothing capacitor after the rectifier should not be used when the PFC is connected. The PFC IN+/- input from the rectifier can be 18 or 36VAC rectified. The output from the PFC is always +55VDC.

Attention!

DO NOT disconnect the ground cable from the PFC circuit while PFC IN+ or PFC IN- is connected!! Always disconnect PFC IN+ and PFC IN- before disconnecting +12VDC and ground. Otherwise the PFC IC might break.

DO NOT connect a load with lower value than 200Ω to the PFC. Otherwise the MOSFET might get overheated.

PWM

The Pulse Width Modulator (PWM) consists of two IC, one 555-timer and one OP-amp. The 555 is used to generate a triangular wave with a frequency that can be adjusted between 4.2kHz-13.3kHz with a potentiometer. This triangular wave is then fed to the OP-amp and compared with another signal that for example can be an external sinusoidal signal or it can be compared to a constant DC-level which can be adjusted with a potentiometer. The output from the OP-amp will be a square wave, with a certain duty cycle depending on the input signals. With a sinusoidal input the duty cycle of the square wave will be changing according to the sinus wave. With a constant DC-level the duty cycle will be constant but can be changed by turning the DC-level potentiometer, named Duty Cycle.

Attention!

DO NOT keep the Duty Cycle potentiometer in its end positions, this may harm the MOSFET.

Buck

The Buck converter is controlled by the PWM signal from the PWM module. The DC IN is the input voltage that are to be stepped-down. It can be taken either directly from the rectifier bridge with a smoothing capacitor connected or from the output of the PFC (Problems?). The DC IN should not exceed +55VDC. The output voltage will be between zero and DC IN and can be adjusted by changing the duty cycle of the input PWM-signal.