Analysis and Minimization of Harmonics in the AC and DC Sides of PWM Inverters.

Dahono, Pekik Argo; Sato, Yukihiko; Kataoka, T.

doi:10.1541/ieejias.115.553

Cited by 21 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For higher number of phase, harmonic injection into the sinusoidal reference signal is neither necessary nor useful to reduce the output current ripple. It should be noted that the result as shown by (29) is the same as the result in [6][7][8].…”

Section: Analysis and Minimization Of Output Current Ripplesupporting

confidence: 67%

“…Different to three-phase PWM inverters, suitable PWM techniques for multiphase PWM inverters have not been developed very well [2][3][4][5]. In the case of three-phase PWM inverter, it has been shown that a sinusoidal signal plus twenty-five percent third harmonic is the optimum reference signal that results in minimum output current ripple or harmonics [6][7][8]. Third harmonic injection is also useful to increase the maximum output voltage of three-phase PWM inverters.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis and Minimization of Output Current Ripple of Multiphase Carrier-Based PWM Inverters

Dahono¹

2010

itbj.eng.sci.

View full text Add to dashboard Cite

Analysis and minimization of output current ripple of multiphase carrier-based PWM inverters are presented in this paper. Analytical expression of rms value of output current ripple of multiphase PWM inverters as a function of the reference signal is first derived. Based on this expression, it is shown that a pure sinusoidal signal is the optimum reference signal that results in minimum output current ripple. Different to three-phase PWM inverters, injection of harmonics into the sinusoidal reference signal is neither necessary nor useful. The rms values of output current ripple of 5-, 7-, and 9-phase PWM inverters under various reference signals are compared. Experimental results are included to show the validity of the analysis method.

show abstract

Section: Analysis and Minimization Of Output Current Ripplesupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Analysis and Minimization of Output Current Ripple of Multiphase Carrier-Based PWM Inverters

Dahono¹

2010

itbj.eng.sci.

View full text Add to dashboard Cite

show abstract

“…As shown by Figure 5 (a), the injection signal takes its simplest form i.e the twenty five percent third harmonic only for unity pf operation. This is also the injection signal that produces minimum output current ripple for three-level inverter (according to analysis results described previously in Section 3) as well as for conventional two-level inverter [11]. For load with pf lower than unity, Figure 5 (b) shows that injection signal turns into a more complex periodic discontinuous signal, although its frequency remains three times reference signal frequency.…”

Section: Neutral Current Of Three-level Pwm Invertermentioning

confidence: 60%

“…Various methods to develop this natural sampled PWM technique, particularly the ones aimed to reduce or even minimize inverter output current ripple, were also proposed. Most popular one is the third harmonic injection method, in which the reference signal used is three-phase sinusoidal injected by third harmonic signal instead of three-phase sinusoidal signal only [9][10][11]. For conventional twolevel inverter, the twenty five percent third harmonic signal (a sinusoidal signal with frequency three times of reference signal frequency and amplitude one fourth or twenty five percent of reference signal amplitude) has been proven to be the optimum injection signal that results in minimum output current ripple and minimum input voltage ripple for unity power factor operation [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Third Harmonic Injection Signal on Output Current Ripple and Neutral Current of Three-Level PWM Inverter

Kastawan¹,

Harsoyo²,

Hutabarat³

et al. 2015

ijeei

Self Cite

View full text Add to dashboard Cite

The influence of injecting third harmonic signal into three-phase sinusoidal reference signal of natural sampled PWM technique on output current ripple and neutral current of three-level inverter is analyzed in this paper. Expressions for both inverter output current ripple and neutral current as a function of PWM reference signal are derived first. Then, it is shown that injecting one fourth or twenty five percent third harmonic signal into three-phase sinusoidal reference signal may produce minimum output current ripple and neutral current. The twenty five percent third harmonic injection signal can simultaneously minimize output current ripple and neutral current of the three-level inverter only for unity power factor operation. Simulation and experimental results are included to show validity of the analysis results.

show abstract

“…Those are focusing to the input [12]- [17], [18], [20] and output [18]- [21] ripple to meet the standard that have been determined [22]. On the input side of the inverter, the current ripple determines the size of the DC link capacitor of the inverter.…”

Section: Introductionmentioning

confidence: 99%

Current Ripple Analysis of New Double-Stator AC Drive Systems

2015

Self Cite

View full text Add to dashboard Cite

IntroductionMany studies have been conducted to improve the performance of AC drive system. With advanced progress of the power semiconductor switches, inverters can widely applied as AC drive with high-frequency switching and various levels of power requirements [1]- [4]. Various kinds of AC drive system topology by using an inverter has been researched and developed for a wide variety of applications, such as locomotive traction, electric ship propulsion, more-electric aircraft, and high-power industrial applications. For higher power requirements, multiphase and multilevel inverter is the most commonly used. The multiphase inverter basically consists of conventional n-half bridge inverter connected in parallel corresponding to the load supplies. It provides lower pulsating torque, better tolerance and the possibility of splitting motor current across a higher number of phases, thus reducing the converter rating [3], [5]- [7]. For high voltage applications, multilevel inverter is more suitable because the inverter output voltage is obtained through a few steps of voltage levels, although it also has some drawbacks. Multilevel system requires a lot of switches and has capacitor voltage unbalanced problem [8]- [11].In order to develop better performance of the AC drive system as Figure 1 [22]. On the input side of the inverter, the current ripple determines the size of the DC link capacitor of the inverter. It has been reported that the DC link capacitor is the most vulnerable component in an inverter. Furthermore, on the output side of the inverter, the higher current ripple could cause the motor to heat faster.In this paper, a new topology of double-stator AC drive system is proposed to combine the benefits of both multiphase and multilevel system. In the proposed system, as shown in Figure 2, two conventional two-level three-phase inverters are connected in series on the DC sides. Each three-phase output of these two inverters is supplying three-phase stator winding set of double-stator AC motor. By using the proposed topology, the advantages of simple twolevel inverter topology and high reliability and power density of multiphase AC motors can be combined. Analytical expressions of input and output current ripples of the proposed system are then derived. It is shown that under the same DC input voltages, the output current ripple of the proposed system is lower than the conventional topology. Under the same output voltage, the proposed system has lower input current and therefore, fewer losses on the DC power supply

show abstract

Analysis and Minimization of Harmonics in the AC and DC Sides of PWM Inverters.

Cited by 21 publications

References 14 publications

Analysis and Minimization of Output Current Ripple of Multiphase Carrier-Based PWM Inverters

Analysis and Minimization of Output Current Ripple of Multiphase Carrier-Based PWM Inverters

Influence of Third Harmonic Injection Signal on Output Current Ripple and Neutral Current of Three-Level PWM Inverter

Current Ripple Analysis of New Double-Stator AC Drive Systems

Contact Info

Product

Resources

About