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Journal of Zhejiang University SCIENCE A 2003 Vol.4 No.3 P.276-280


Analysis and design of DSP-based dual-loop controlled UPS inverters

Author(s):  WU Xie-hua, YAN Chao

Affiliation(s):  Department of Applied Electronics, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   eewxh@cee.zju.edu.cn

Key Words:  Digital control, Inductor-current mode, Dual-loop

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WU Xie-hua, YAN Chao. Analysis and design of DSP-based dual-loop controlled UPS inverters[J]. Journal of Zhejiang University Science A, 2003, 4(3): 276-280.

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This paper presents a novel digital dual-loop control scheme of the PWM(Pulse width modulate) inverter. Deadbeat control technique are employed to enhance the performance. Half switching period delayed sampling and control timing strategy is used to improve the system dynamic response. Simulation and experimental results presented in the paper verified the validity of the proposed control scheme.

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[1]Jung, S.L., Huang, H.S., Chang, M.Y. and Tzou, Y.Y., 1997. DSP based multiple-loop control strategy for single-phase inverters used in AC power sources. IEEE PESC 97, St. Louis, Missouri, p.706-712.

[2]Jung, S.L. and Tzou, Y.Y., 1996. Discrete sliding-mode control of a PWM inverter for sinusoidal output waveform synthesis with optimal sliding curve. IEEE Trans. PE, 11(4):567-577.

[3]Low, K.S., 1999. A DSP-based single-phase AC power source. IEEE Trans. PE, 46(5): 936-941.

[4]Texas Instruments, 1997. CPU, System, and Instruction Set. In: TMS320C24X DSP Controllers Reference Set.

[5]Tzou, Y.Y., Ou, R.S., Jung, S.L. and Chang, M.Y., 1997. High-Performance programmable AC power source with low harmonic distortion using DSP-based repetitive control technique. IEEE Trans. PE,12(4):715-725.

[6]Wu, H.Y., Lin, D., Zhang, D.H., Yao, K.W. and Zhang, J.F., 1999. A current-mode control technique with instantaneous inductor current feedback for UPS inverters. IEEE APEC, Texas, USA, p.951-957.

[7]Zhang, K., Kang, Y., Xiong, J., Zhang, H. and Chen, J., 2000. Repetitive waveform correction technique for CVCF-SPWM Inverter. IEEE PESC, Galway, Ireland, p.153-158.

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