We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
无传感器下中频逆变电源死区补偿与控制策略.
- Authors
贺玫璐; 薛鹏飞; 刘平; 刘永杰; 苗轶如
- Abstract
Instead of the auxiliary power system, a 400 Hz ground power unit is applied to airplanes during stopovers in airports, which is an important means of reducing carbon emissions of airport. However, under the restraint of switching frequency and high dynamic response speed, a single control loop is usually implemented in 400 Hz voltage-source inverter, and the sampling and control of the inductor current in the LC filter are avoided, which will make the design of the control system more difficult, and the direction of the dead-time compensation can not be obtained due to the lack of the current polarity. In view of the above problems, this paper analyzes the influence on the output voltage of inverter due to the dead-time, including the errors of fundamental amplitude and phase, and the low-order harmonic distortion, and a dead-time compensation strategy based on current observation is proposed. According to the state equation of the inductor current, a current observation model without zero drift was proposed to obtain the polarity of the inductor current and the modulation voltage signal was compensated to suppress the deadtime effect. Then, combined with the amplitude-frequency characteristic curve, the parameter optimization design method of the single closed-loop proportional-resonant controller was studied. Finally, a simulation model and an experimental platform were established to verify the feasibility and effectiveness of the current observation model, dead-time compensation method and controller parameter optimization design method proposed in this paper.
- Subjects
RESONANCE
- Publication
Electric Machines & Control / Dianji Yu Kongzhi Xuebao, 2023, Vol 27, Issue 10, p171
- ISSN
1007-449X
- Publication type
Article
- DOI
10.15938/j.emc.2023.10.017