Inverter with space vector modulation method

This paper presents about the principle of space vector modulation method (SVM) , for example in this paper is Inverter. The principle is very easy and efficiency, The output sinusoidal voltage will be synthesized and verified by the simulation.

INVERTER CONTROL WITH SPACE VECTOR MODULATION TI E N – VAN LE INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY CONTENTS  INTRODUCTIONS  SPACE VECTOR TECHNIQUE  SIMULATION RESULTS  CONCLUSIONS AND FUTURE WORKS INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY INTRODUCTIONS In previous week, I studied SVPWM technique to control the output voltage of the inverters The system configuration is given below as Load INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY INTRODUCTIONS  Space vector modulation(SVM) is an algorithm for the control of pulse width modulation(PWM)  The objective: Generate PWM load line voltages that are in average equal to the reference load line voltage  Space vector PWM can be implemented by steps as ➢ Step 1: Determine the possible switch states ➢ Step 2: Determine the state times ➢ Step 3: Switching pattern INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE  Step 1: Determine the possible switch states State INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE  Switching state 1(100) The space vector is defined as V(t)  Va  Vbe j 2 /3  Vce j 4 /3   In this state  0 2Vdc Vdc Vdc 2 2  j 2 /3 Va  ;Vb   ;Vc    V1   Vdc  Vdce  Vdce j 4 /3  3 3 3   V1  Vdce j INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE State No Switching state 𝑽𝒂 𝑽𝒃 𝑽𝒄 V u0(000) 0 0 u1(100) 2/3𝑽𝒅𝒄 - 1/3𝑽𝒅𝒄 - 1/3𝑽𝒅𝒄 𝟐/𝟑𝑽𝒅𝒄 ∠𝟎 U2(110) 1/3𝑽𝒅𝒄 1/3𝑽𝒅𝒄 - 2/3𝑽𝒅𝒄 𝟐/𝟑𝑽𝒅𝒄 ∠(𝝅/𝟑) U3(010) - 1/3𝑽𝒅𝒄 2/3𝑽𝒅𝒄 - 1/3𝑽𝒅𝒄 𝟐/𝟑𝑽𝒅𝒄 ∠(𝟐𝝅/𝟑) U4(011) - 2/3𝑽𝒅𝒄 1/3𝑽𝒅𝒄 1/3𝑽𝒅𝒄 𝟐/𝟑𝑽𝒅𝒄 ∠(𝝅) U5(001) - 1/3𝑽𝒅𝒄 - 1/3𝑽𝒅𝒄 2/3𝑽𝒅𝒄 𝟐/𝟑𝑽𝒅𝒄 ∠(𝟒𝝅/𝟑) U6(101) 1/3𝑽𝒅𝒄 - 2/3𝑽𝒅𝒄 1/3𝑽𝒅𝒄 𝟐/𝟑𝑽𝒅𝒄 ∠(𝟓𝝅/𝟑) U7(111) 0 0 Table of switching states INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE  Step 2: Determine the state times As 𝑉𝑟 is falling into sector Ts vr  T1 v1  T2 v2  T0 v0 2   TsVr   T1 Vdc  T2 Vdc  T0 x0 3 Solving above equation we obtain 3TsVr    T1  sin     Vdc 3  3TsVr T2  sin   Vdc T0  Ts  T1  T2 INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE  𝑉𝑟 is falling into sector k 3TsVr       T1  sin  k     MTs sin  k    Vdc     3TsVr  (k 1)  (k 1)   T2  sin     MTs sin      Vdc 3     T0  Ts  T1  T2 3Vr M Vdc (Modulation index) INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE  Step 3: Switching pattern Sector Sector INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 10 SPACE VECTOR TECHNIQUE Sector Sector INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 11 SPACE VECTOR TECHNIQUE Sector Sector INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 12 SIMULATION RESULTS F0 =100Hz, Fs =10kHz, Vdc=100V, M =0.5 INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 13 SIMULATION RESULTS INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 14 SIMULATION RESULTS T = 0.01 INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 15 SIMULATION RESULTS M = 0.5 M =0.5 M = 0.7 INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 16 CONCLUSIONS AND FUTURE WORK  Conclusions ➢ Output voltage of inverter can be implemented by SVM method with expected frequency and average voltage value  Future works ➢ Study on three - phase matrix converter ➢ Simulation on Psim INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 17 REFERENCES  [1] Vector Control of three phase AC machines System Development in the Pratice Quang, N.P Dittrich, J.-A 2015, XIX, 364 p 194 illus 1illus In color Hardcover ISBN: 978-3-662-46914-9  [2] Jin-woo Jung, Ph.D Student, “Space Vector PWM Inverter”, Mechatronic Systems Laboratory Department of Electrical and Computer Engineering The Ohio State University  [3] “ Nguyên lý mô điều chế vector không gian” Hồ Anh Tuấn INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 18 THANK YOU INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 19 ... LABORATORY SPACE VECTOR TECHNIQUE  Step 1: Determine the possible switch states State INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE  Switching state 1(100) The space vector. .. control the output voltage of the inverters The system configuration is given below as Load INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY INTRODUCTIONS  Space vector modulation( SVM) is an algorithm... Vdc (Modulation index) INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY SPACE VECTOR TECHNIQUE  Step 3: Switching pattern Sector Sector INDUSTRIAL NETWORK & POWER ELECTRONICS LABORATORY 10 SPACE