The Modeling and Simulation of Zero Voltage Switching, Power Factor Correction for Three Phase Three Level Boost Rectifier

The Modeling and Simulation of Zero Voltage Switching, Power Factor Correction for Three Phase Three Level Boost Rectifier

Arpit Panchratan

PG Student (Power Electronics) SATI VIDISHA(M.P.)

Mr. Sudhir P. Phulambrikar HOD (Electrical Dptt) SATI VIDISHA(M.P.)

Abstract The Three Phase Three Level ZVS PFC (power factor correction) Boost Rectifier for achieving low input current and low total harmonic distortion (THD) using four switches, zero voltage switching (ZVS). This SIMULINK model voltage stress across the four switches is one half of the output voltage. By using this also achieved low conduction losses. Line to line voltage use 340V which gave efficiency more then 96% and saw the less then 3% THD over the used input and above the 8-10% load range. Also achieved power factor correction.

Keywords: ZVS,ZCS, EMI, AC-DC convertor.

Abbreviations: Cc-Coupling capacitor, Ia,Ib and Ic are inductor currents,I1,I2 and I3 are input currents.

1

A

2

3

LT1

2

A1 3

A2

S4 S3 S

l1

4

A3

l2

5

l3 A4

6

S2

S1

A5

[I]INTRODUCTION

Earlier the ZVS PFC THD DCM boost rectifier are introduced [4][5] that gives the idea to design the Simulink model. For achieving the high voltage performance by rectifier is not easily done, but analyzing the SIMULINK model, gave the performance the same by using soft switching.

This modal of the rectifier achieves less then 3% input current THD over the output voltage is above than 8- 10% also. This model also performs automatically balance the output voltage because the series capacitor connected in load side. The advantage of the series connection of the output capacitors are performing either the single high voltage or two identical low voltages outputs given.

FIG-1 Proposed EMI filter

EMI filter used hare for eliminating the unwanted noise signal which are super impose with the input current at the time of clamping in the circuit.

Hence transformer connects with the capacitor inductor topologies for handling the this type of input current Transformer of the EMI is use to be same winding resistance and should be same voltage.

1. Three Phase three Level ZVS PFC THD boost rectifier by PWM (proposed system)

   Rectifire and

   Capacitor connection of this way also shows low cost high performance components used in this model.

   [II] EMI FILTER

   The Electromagnetic Induction (EMI) filter is the passive device which is used in this circuit for avoiding the noise at the time of fast high voltage transition performs.

   3 phase supply EMI filter

   Load

   control switch with PWM

   clamped capacitor

   The circuit of EMI filter given below

   Fig-2 Proposed system for modal

   The figure shows the three phase three level model of ZVS PFC BOOST rectifier proposed modal. In the circuit see the 3 phase input given to the EMI filter for avoiding the clamped noise. And then the input given to the Rectifier which is control by the four switches. Switches can be performed by the PWM method . Than the output of the rectifier is

   connected with the clamped capacitors that connected in series. Connect the load across these capacitors and measure the output voltage.

2. The SIMULINK modal and Analysis

   The three phase three level thd zvs pfc boost rectifier SIMULINK model shows in figure 3 . In this model C1,C2 and C3 are the three capacitors connected in Y (star connection) and this connection create a neutral point . The virtual connection also connected with middle of pairs of switches and middle of output capacitors, which helps the balancing the output voltage.

   1 Signal 1 0.5

   0

   1 Signal 2 0.5

   0

   1 Signal 3 0.5

   0

   1 Signal 4 0.5

   0

   newmodal/Signal Builder : Group 1

   By connecting the neutral point to the middle of the pair of switches, directly achieves the three input. Clamping capacitor Cc connected across the switch. 1 And 2 the out put capacitors. For clamped inductor take two winding linear transformer capacitor use for reset the inductor current connected serially with pair of switches.

   By figure 4(a) and (b) saw when the switch S1 and S2 on inductor current 1 flows from inductor L1 , S1 and S2 the 1 flows through 1 and switches capacitor Vcc will charged. After some time switch S2 will turned off then than the Vcc going to discharged and current flows from S2 , S3 . the measured current peak of 1 is equal to 1.

   After some time the switch S1 also off. After some delay the switch S3 and S4 are on fig 4(c) and (d). This phenomenon actually for the negative half cycle for the rectifier. At this time current 2 and 3 flows through to the inductor L2 and L3 and also the current going to the 2side.

   When the diode 1 is forward biased than the current 1

   decreases linearly then the current calculated by equation,

   0 1 2 3 4 5 6 7 8 9 10

   Time (sec)

   Fig-5 Switching pulses for the MOSFET switches

   = 1 2 1

   1 21

   When the diodes 2 and 3 are forward biased than the current 2 and 3 are simultaneously increases linearly.

   = + 1 2 2

   2 22

3. Switching for MOSFET

   In the modal take the PWM method for switching performance. The figure-4 shows the switching phenomenon of the MOSFET When the S1 is ON then the S2 also ON for some instantaneous of time, then it will OFF.

   S1,S2

   Discre te ,

   s = 5e -005 s

   INPUT CURRENT

   po we rgui

   Subsystem1

   Display

   A

   A3

   r1 L1

   A4

   A1

   i

   +

   –

   3

   –

   + i

   m g

   S D

   D1 D2

   d0

   Cr

   A m1

   From B

   From1

   M2

   C

   D6

   m g

   S D

   Co1

   2

   Tx

   OUT PUT

   v

   +

   –

   Vo

   r2

   A5

   A2

   r3

   EMI FILT ER

   L2 4

   –

   + i

   L3 5

   From2 M3 Co

   2

   m g

   S D

   D7

   D

   m g

   S D

   From3

   Va Vc

   M4

   D3 D4 D5

   C3

   C1 C2

   Vb

   S3,S4

   no de 0

   Fig .3 The Three Phase Three Level Zvs Thd Pfc Rectifier Matlab Simulink Modal

   Fig- 4(a) Fig- 4(b)

   Fig- 4(c) Fig- 4(d)

   Fig 4- analysis of the modal fig-4(a) and 4(b) for the switch operation of S1 and S2 and fig-4(c) and 4(d) for the switch operation of S3 and S4

   After some delay the S4 switch will ON and at this time S3 will ON for some instantaneous of time and then it will be OFF.

4. SIMULINK RESULTS

   The results of the matlab simulink model was evaluated on 340VL-L voltage where the C1,C2 and C3 are 2.2µF, L1 , L2 and L3 are 89µH.D1-D6 taking the simple ratings and the diodes D7 and D8 having high snubber value.

   FIG.6 Input inductor current waveforms at full load 340VL-L

   Figure-6 show the input current IL1, IL2, and IL3 waveforms of simulink result in scope at full power at 340VL-L voltage.

   Fig.7 Measured DC out put at 340VL-L input voltage.

   Figure-7 shows the output power at full load in voltage 340VL-

   L. having 96% of efficiency .

   Figure 8 shows the measured three level input voltage change by corresponding output voltage.

   Figure 9 the three phase Input current (Ia , Ib ,and Ic) THD of the input current achieved less then 3% total harmonics reduction level by the SIMULINK modal shows by figure- 12.

   Fig.8 Chnge in input voltage at full load

   Fig.9 measured input current at full load

   Figure- 10 and figure -11 shows Measured DC out put voltage at different switching operations like figure- 10 shows the S1 and S2 ON given the output DC voltage and

   Figure- 11 shows the S3 and S4 ON given the output DC voltage

   Fig.10 Measured DC out put at S1 and S2 ON.

   Fig.11 Measured DC out put at S3 and S4 ON.

   Fig 12- THD of the Input current

5. CONCLUSION

In this paper three phase three level ZVS THD PFC boost rectifier using four switch (PWM) simulink modal introduced

. voltage across the each switch was clamped with output voltage (measured one half of its value). By SIMULINK results achieved less then 3% input current total harmonic distortion over the given input and achieved above 8-10% load.

The total performance done by MATLAB simulink at 340 line to line voltage .Achieved 96% efficiency with full load.

REFERENCES

1. M.H. RASHID POWER ELECTRONICS ZERO VOLTAGE SWITCHING

2. P Barbosa ,F.canales and F.C.Lee Analysis an evaluation of the Two Switch Three Level Boost Rectifier ,IEEE Power Electronics specialists conf.(PESE) record ,2001,pp.1159-1164.

3. J.R. Pinheiro and I.Barbi,The Three Level ZVS-PWM dc-dc converters ,IEEE Transaction on Power Electronics

   .Vol8.No.4.pp.486-492,Oct. 1993

4. Y.Jang and M.M. Jovanovic ,The Taipei Rectifier a new three phase two switch zvs pfc dcm boost rectifier ,IEEE Transaction on Power Electronics ,Vol.28,No.2.pp.686-694,feb 2013

5. Y.Jang , M.M. Jovanovic and Juan M. Ruiz,Three Level TAIPEI Rectifier ,IEEE Transaction on Power Electronics,pp.943-950 April 2014.