|
|
|
| Digital Control Design of High Power 400Hz Inverters |
| Liu Chunxi1, 4, Ma Weiming2, Sun Chi2, Hu Wenhua3 |
| 1. Zhejiang University Hangzhou 310027 China 2. Naval University of Engineering Wuhan 430033 China 3. Huazhong University of Science and Technology Wuhan 430074 China 4. Liaoning Technical University Huludao 125105 China |
|
|
|
|
Abstract In order to implement digital control in high power medium frequency 400Hz/115V inverters, the delay induced by the processes of sampling, computing and PWM during digital control and its impact on the system performances are analyzed based on two-H-Bridge cascaded topology. The control parameters are designed in the continuous domain design by introduced the equivalent time delay when P+resonant controller are adopted. The discrete simulation on a single-phase 100kVA medium frequency inverter model was presented, and the simulation shows the effectiveness of the proposed scheme. PWM waveforms in the single and double update mode operation are generated simultaneously with a common reference sinusoidal signal and the differences between each fundamental phase and reference signal phase are obtained by DSP and field programmable gate array (FPGA). The results coincide with theoretical analysis.
|
|
Received: 21 April 2009
Published: 07 March 2014
|
|
|
|
|
|
[1] Jensen U B, Blaabjerg F, Pedersen J K. A new control method for 400Hz ground power units for airplanes[J]. IEEE Transactions on Industry Applications, 2000, 36(1): 180-187.
[2] 蔡昆, 李耀华, 胜晓松, 等. 高性能单相电压源逆变器的输出控制[J]. 电工技术学报, 2005, 20(1): 104-107.
[3] 张纯江, 张婧, 邬伟扬, 等. 基于Delta算子的谐振控制器实现高频链逆变器波形控制[J]. 电工技术学报, 2008, 23(7): 81-85.
[4] 谢孟, 蔡昆, 胜晓松, 等. 400Hz中频单相电压源逆变器的输出控制及其并联运行控制[J]. 中国电机工程学报, 2006, 26(6): 78-82.
[5] Mihalache L. Improved load disturbance rejection method for 400Hz GPU inverters[C]. IEEE PESC, 2004: 95-101.
[6] 李建林, 张仲超, 许洪华. 基于级联H桥五电平变流器SAPF的应用研究[J]. 电工技术学报, 2006, 21(2): 79-82.
[7] 李建林, 许鸿雁, 高志刚, 等. 级联H桥五电平变流器工况分析与验证[J]. 电工技术学报, 2007, 22(4): 85-91.
[8] Zmood D N, Holmes D G, Bode G. Frequency domain analysis of three phase linear current regulators[J]. IEEE Transactions on Industrial Applications, 2001, 37(2): 601-610.
[9] Zmood D N, Holmes D G. Stationary frame current regulation of PWM inverters with zero steady state error[J]. IEEE Transactions on Power Electronics, 2003, 18(3): 814-822.
[10] Teodorescu R, Blaabjerg F, Liserre M, et al. Proportional-resonant controllers and filters for grid-connected voltage-source converters[J]. IEE Proc. Electr. Power Appl., 2006, 153(5): 750-762.
[11] Liserre M, Teodorescu R, Blaabjerg F. Stability of photovoltaic and wind turbine grid-connected inverters for a large set of grid impedance values[J]. IEEE Transactions on Power Electronics, 2006, 21(1): 263-272.
[12] Heng Deng, Oruganti R, Srinivasan D. PWM methods to handle time delay in digital control of a UPS inverter[J]. IEEE Power Electronics Letters, 2005, 3(1): 1-6. |
|
|
|
2011, Vol. 26 
