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Title: Double-Line-Frequency Ripple Model, Analysis & Impedance Design for Energy Stored Single-Phase Quasi-Z Source Photovoltaic System

Journal Article · · IEEE Translations on Industrial Electronics
 [1];  [2];  [3];  [4];  [5]; ORCiD logo [6]
  1. Beijing Jiaotong Univ. (China)
  2. Texas A & M Univ., Doha (Qatar)
  3. Texas A & M Univ., College Station, TX (United States). Dept. of Electrical and Computer Engineering
  4. Texas A & M Univ., Doha (Qatar). Electrical and Computer Engineering Dept.
  5. Texas A & M Univ., College Station, TX (United States). Electrical and Computer Engineering
  6. Siemens Corporation, Princeton, NJ (United States). Corporate Technology
+ Show Author Affiliations

The battery energy stored quasi-Z-source (BESqZS) based photovoltaic (PV) power generation system combines advantages of the qZS inverter and the battery energy storage system. But, the second harmonic (2ω) power ripple degrades the system’s performance and affects the system’s design. An accurate model to analyze the 2ω ripple is very important. The existing models did not consider the battery, or assumed a symmetric qZS network with L1=L2 and C1=C2, which limits the design freedom and causes oversized impedance parameters. Our paper proposes a comprehensive model for the single-phase BES-qZS-PV inverter system, where the battery is considered and there is no restriction of L1=L2 and C1=C2. Based on the built model, a BES-qZS impedance design method is proposed to mitigate the 2ω ripple with asymmetric qZS network. Simulation and experimental results verify the proposed 2ω ripple model and impedance design method.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1394770
Journal Information:
IEEE Translations on Industrial Electronics, Vol. PP, Issue 99; ISSN 0278-0046
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

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25 ENERGY STORAGE
2ω ripple model
quasi-Z-source inverter
battery energy storage
photovoltaic power system