© The Institution of Engineering and Technology
The pulse-width amplitude modulation (PWAM) method was proposed for the single-phase quasi-Z-source inverter (qZSI)-based photovoltaic (PV) power system to reduce quasi-Z-source (qZS) impedance values while improving efficiency. The method modified sinusoidal pulse-width modulation (SPWM) of the qZSI by combining pulse-amplitude modulation (PAM) and a varied dc-link voltage envelope was produced. The SPWM worked at low dc-link voltage, lowering voltage stress and avoiding shoot-through switching. The PAM worked at the varied dc-link voltage, reducing the number of switching events. As a result, the power dissipation decreased compared to working at the constant dc-link voltage. This study further investigates the PWAM-based single-phase qZS PV inverter system. An improved topology with control strategy is proposed for its grid-connected and standalone operation. Design method of impedance parameters is detailed. The performance in boost and buck operation is discussed when the single-phase qZSI using SPWM and PWAM. Simulation and experimental results verify outstanding features of the PWAM for single-phase qZSI, and the proposed approach for dual-mode operation of the PWAM-based single-phase qZS PV power system.
References
-
-
1)
-
16. Xue, Y., Ge, B., Peng, F.Z.: ‘Reliability, efficiency, and cost comparisons of MW-scale photovoltaic inverters’. Proc. IEEE Energy Conversion Congress and Exposition (ECCE), 15–20 September 2012, pp. 1627–1634.
-
2)
-
7. Rymarski, Z., Bernacki, K.: ‘Influence of Z-source output impedance on dynamic properties of single-phase voltage source inverters for uninterrupted power supply’, IET Power Electron., 2014, 7, (8), pp. 1978–1988.
-
3)
-
17. Sun, D., Ge, B., Yan, X., et al: ‘Modeling, impedance design, and efficiency analysis of quasi-Z source module in cascade multilevel photovoltaic power system’, IEEE Trans. Ind. Electron., 2014, 61, (11), pp. 6108–6117.
-
4)
-
11. Zhou, Y., Li, H., Li, H.: ‘A single-phase PV quasi-Z-source inverter with reduced capacitance using modified modulation and double-frequency ripple suppression control’, IEEE Trans. Power Electron., 2016, 31, (3), pp. 2166–2173.
-
5)
-
19. Liu, Y., Ge, B., Abu-Rub, H., et al: ‘Phase-shifted pulse-width-amplitude modulation for quasi-Z-source cascade multilevel inverter based photovoltaic power system’, IET Power Electron., 2014, 7, (6), pp. 1444–1456.
-
6)
-
13. Makovenko, E., Husev, O., Zakis, J., et al: ‘Passive power decoupling approach for three-level single-phase impedance Source Inverter based on resonant and PID controllers’, 2017 11th IEEE Int. Conf. Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), 2017, pp. 516–521.
-
7)
-
2. Abu-Rub, H., Malinowski, M., Al-Haddad, K.: ‘Power electronics for renewable energy systems, transportation and industrial applications’ (John Wiley & Sons Ltd., Hoboken, NJ, 2014).
-
8)
-
15. Li, Y., Gao, W., Li, J., et al: ‘Double line frequency ripple cancelling for single-phase quasi-Z-source inverter’. 2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016.
-
9)
-
26. Cintron-Rivera, J.G., Li, Y., Jiang, S., et al: ‘Quasi-Z-source inverter with energy storage for photovoltaic power generation systems’. Proc. 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conf. and Exposition (APEC), 6–11 March 2011, pp. 401–406.
-
10)
-
23. Zhang, H., Ge, B., Liu, Y., et al: ‘A hybrid modulation method for single-phase quasi-Z source inverter’. 2014 IEEE Energy Conversion Congress and Exposition (ECCE), 14–18 September 2014, pp. 4444–4449.
-
11)
-
10. Yu, Y., Zhang, Q., Liang, B., et al: ‘Single-phase Z-source inverter: analysis and low-frequency harmonics elimination pulse width modulation’. Proc. Energy Conversion Congress and Exposition, Phoenix, USA, 2011, pp. 2260–2267.
-
12)
-
29. Barater, D., Buticchi, G., Lorenzani, E., et al: ‘Active common-mode filter for ground leakage current reduction in grid-connected PV converters operating with arbitrary power factor’, IEEE Trans. Ind. Electron., 2014, 61, (8), pp. 3940–3950.
-
13)
-
9. Liang, W., Liu, Y., Ge, B., et al: ‘Double-line-frequency ripple model, analysis & impedance design for energy stored single-phase quasi-Z source photovoltaic system’, IEEE Trans. Ind. Electron., 2016.
-
14)
-
14. Ge, B., Liu, Y., Abu-Rub, H., et al: ‘An active filter method to eliminate DC-side low-frequency power for a single-phase quasi-Z-source inverter’, IEEE Trans. Ind. Electron., 2016, 63, (8), pp. 4838–4848.
-
15)
-
6. Zare, F., Firouzjaee, J.A.: ‘Hysteresis band current control for a single phase Z-source inverter with symmetrical and asymmetrical Z-network’. Proc. IEEE Power Conversion Conf., April 2007, pp. 143–148.
-
16)
-
8. Liu, Y., Ge, B., Abu-Rub, H., et al: ‘Comprehensive modeling of single-phase quasi-Z-source photovoltaic inverter to investigate low-frequency voltage and current ripple’, IEEE Trans. Ind. Electron., 2015, 62, (7), pp. 4194–4202.
-
17)
-
21. Liu, Y., Ge, B., Abu-Rub, H.: ‘Modeling and controller design of quasi-Z-source cascade multilevel inverter based three-phase grid-tie photovoltaic power system’, IET Renew. Power Gener., 2014, 8, (8), pp. 925–936.
-
18)
-
20. Sun, D., Ge, B., Liang, W., et al: ‘An energy stored quasi-Z source cascade multilevel inverter based photovoltaic power generation system’, IEEE Trans. Ind. Electron., 2015, 62, (9), pp. 5458–5467.
-
19)
-
18. Zhou, Y., Liu, L., Li, H.: ‘A high-performance photovoltaic module-integrated converter (MIC) based on cascaded quasi-Z-source inverters (qZSI) using eGaN FETs’, IEEE Trans. Power Electron., 2013, 28, (6), pp. 2727–2738.
-
20)
-
1. Siwakoti, Y.P., Peng, F.Z., Blaabjerg, F., et al: ‘Impedance-source networks for electric power conversion part I: a topological review’, IEEE Trans. Power Electron., 2015, 30, (2), pp. 699–716.
-
21)
-
12. Ge, B., Liu, Y., Abu-Rub, H., et al: ‘Current ripple damping control to minimize impedance network for single-phase quasi-Z source inverter system’, IEEE Trans. Ind. Inf., 2016, 12, (3), pp. 1043–1054.
-
22)
-
24. Liu, Y., Ge, B., Abu-Rub, H., et al: ‘Hybrid pulsewidth modulated single-phase quasi-z-source grid-tie photovoltaic power system’, IEEE Trans. Ind. Inf., 2016, 12, (2), pp. 621–632.
-
23)
-
3. Liu, Y., Abu-Rub, H., Ge, B., et al: ‘Impedance source power electronic converters’ (John Wiley & Sons Ltd., Hoboken, NJ, 2016).
-
24)
-
27. Ge, B., Peng, F.Z., Abu-Rub, H., et al: ‘Novel energy stored single-stage photovoltaic power system with constant dc-link peak voltage’, IEEE Trans. Sustain. Energy, 2014, 5, (1), pp. 28–36.
-
25)
-
4. Liu, Y., Abu-Rub, H., Ge, B.: ‘Z-source/quasi-Z-source inverters – derived networks, modulations, controls, and emerging applications to photovoltaic conversion’, IEEE Ind. Electron. Mag., 2014, 8, (4), pp. 32–44.
-
26)
-
5. Loh, P.C., Vilathgamuwa, D.M., Lai, Y.S., et al: ‘Pulsewidth modulation of Z-source inverters’, IEEE Trans. Power Electron., 2005, 20, (6), pp. 1346–1355.
-
27)
-
25. Li, Y., Liu, Y., Abu-Rub, H.: ‘PWAM controlled quasi-Z source motor drive’. 2017 IEEE Int. Symp. Industrial Electronics (ISIE), 2017.
-
28)
-
22. Aleenejad, M., Ahmadi, R.: ‘Fault-tolerant multilevel cascaded H-bridge inverter using impedance-sourced network’, IET Power Electron., 2016, 9, (11), pp. 2186–2195.
-
29)
-
28. Li, X., Zhang, H., Shadmand, M.B., et al: ‘Model predictive control of voltage source inverter with seamless transition between islanded and grid-connected operations’, IEEE Trans. Ind. Electron., vol. PP, (99), pp. 1–1.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-pel.2016.0593
Related content
content/journals/10.1049/iet-pel.2016.0593
pub_keyword,iet_inspecKeyword,pub_concept
6
6