Harmonic Analysis of Common-Mode Voltage in Quasi-Z-Source Inverters

Noroozi, Negar; Yaghoubi, M.; Davoodi, Amirali; Ouni, Saeed; Zolghadri, Mohammad Reza

doi:10.1109/icit.2019.8755231

Cited by 1 publication

(2 citation statements)

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“…It is essential to evaluate the leakage current by analyzing the magnitude of the resulting CMV [27]. The CMV V cm of the qZSI is defined as:

\begin{equation}{V_{{\rm{cm}}}} = \frac{{{V_{{\rm{an}}}} + {V_{{\rm{bn}}}} + {V_{{\rm{cn}}}}}}{3},\end{equation}

where V an , V bn , and V cn are the phase voltages [6].…”

Section: Proposed Variable Switching Frequency Pwm Methods For Zsvm8 ...mentioning

confidence: 99%

“…It is worth mentioning that leakage current is the main disadvantage that cannot be ignored in qZSI systems due to the lack of galvanic isolation [4,5]. Analyzing the resulting common-mode voltage (CMV) magnitude is necessary for evaluating leakage currents [6]. In general, the advantages of qZSI inverters in photovoltaic systems outweigh the disadvantages.…”

Section: Introductionmentioning

confidence: 99%

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Variable switching frequency PWM for quasi‐Z‐Source inverter based on DC current ripple prediction

Liu

Huang

Wang

2023

IET Power Electronics

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Herein, a variable switching frequency pulse width (VSFPWM) modulation strategy for quasi‐Z‐source inverter (qZSI) based on a recently proposed modulation method, named as ZSVM8, is proposed. The formulae of quasi‐Z‐source inverter inductor current ripple of ZSVM8 are deduced in detail, and a prediction model for the current ripple is obtained. Combining with the VSFPWM technique, an improved modulation method named ZSVM8 VSFPWM is proposed to further reduce the switching times without increasing the maximum inductor current ripple. As a result, the switching losses can be reduced compared with the conventional ZSVM8. Besides, ZSVM8 VSFPWM also suppresses electromagnetic interference noise, such as current EMI and common‐mode voltage. Simulations and hardware experimental results are implemented to verify the efficacies of the proposed modulation method.

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“…It is essential to evaluate the leakage current by analyzing the magnitude of the resulting CMV [27]. The CMV V cm of the qZSI is defined as:

\begin{equation}{V_{{\rm{cm}}}} = \frac{{{V_{{\rm{an}}}} + {V_{{\rm{bn}}}} + {V_{{\rm{cn}}}}}}{3},\end{equation}

where V an , V bn , and V cn are the phase voltages [6].…”

Section: Proposed Variable Switching Frequency Pwm Methods For Zsvm8 ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variable switching frequency PWM for quasi‐Z‐Source inverter based on DC current ripple prediction

Liu

Huang

Wang

2023

IET Power Electronics

View full text Add to dashboard Cite

show abstract

Harmonic Analysis of Common-Mode Voltage in Quasi-Z-Source Inverters

Cited by 1 publication

References 10 publications

Variable switching frequency PWM for quasi‐Z‐Source inverter based on DC current ripple prediction

Variable switching frequency PWM for quasi‐Z‐Source inverter based on DC current ripple prediction

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