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1
Content available Research on strategy of load-side resonant soft-switching inverter based on interconnection and damping assignment-passivity based control
Zhang Yajing, Zhang Huanchen, Li Jianguo, Wang Jiuhe
Archives of Electrical Engineering
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2024
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Vol. 73, nr 1
63--75
EN
Soft-switching technologies can effectively solve the problem of switching losses caused by increasing switching frequency of grid-connected inverters. As a branch of soft-switching technologies, load-side resonant soft-switching is a hotspot for applications of high-frequency inverters, because it has the advantage of achieving soft-switching without using additional components. However, the traditional PI control strategy based on the linear model is prone to destabilization and non-robust dynamic performance when large signal perturbation occurs. In this paper, a novel Passivity-Based Control (PBC) method is proposed to improve the dynamic performance of load-side resonant soft-switching grid-connected inverter. Besides, the model based on the Port Controlled Hamiltonian (PCH) model of the soft switching inverter is carried out, and the passivity-based controller is designed based on the established model using the way of interconnection and damping assignment passivity based control (IDA-PBC). Both stable performance and dynamic performance of the load-side resonant soft-switching inverter can be improved over the whole operating range. Finally, a 750 W load-side resonant soft-switching inverter simulation model is built and the output performance is compared with the traditional PI control strategy under stable and dynamic conditions. The simulation results show that the proposed control strategy reduces the harmonic distortion rate and improves the quality of the output waveforms.
2
Content available Passivity-based control strategy for resonant converterbased on Euler–Lagrange model
Zhang Yajing, Liang Weihao, Wang Xiuteng, Li Lifen
Archives of Electrical Engineering
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2024
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Vol. 73, nr 1
105--119
EN
The LLC resonant converter is a widely used DC/DC converter that offers the benefit of enabling soft switching compared to classical DC/DC converters. However, traditional PI control strategy based on a linear model has drawbacks such as slow dynamic response and poor anti-interference performance. To overcome the shortage, a passivity based control strategy based on the Euler–Lagrange (EL) model is proposed in this paper to improve the dynamic performance of the half-bridge LLC resonant converter. In addition, the stability of the system based on the proposed strategy is analyzed and verified. Further, the effectiveness and performance of the proposed strategy is verified in the simulation by comparing with the traditional PI controller. Finally, a prototype was built to verify the dynamic performance of the LLC resonant converter based on the proposed control strategy.
3
Passivity Based Control in the three phase voltage source inverter for a UPS system
Rymarski Z., Dyga Ł., Bernacki K.
Elektronika : konstrukcje, technologie, zastosowania
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2017
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Vol. 58, nr 9
2--6
EN
Voltage source inverters in UPS systems should have restricted distortions in case of the standard loads defined by EN-62040-3 standard. Only control systems measuring not only the output voltage but additionally the inverter output filter coil current and the load current are able to decrease Total Harmonic Distortions of the output voltage for the static nonlinear load and to decrease the overshoot and the settling time of the output voltage for the dynamic load. The design of most of the control systems requires the knowledge of the inverter model which is based on its output LC filter. The inductance and the serial resistance of the coil should be measured in the operating point of the inverter. The paper presents the VSI with the multiple input Passivity Based Control designed using the measurements of the output filter parameters. The experimental verification of the theoretical considerations in the breadboard inverter model is presented.
PL
Falowniki napięcia stosowane w systemach UPS powinny mieć ograniczone zniekształcenia napięcia wyjściowego zgodnie z normą EN-62040-3. Tylko systemy sterowania, które mierzą nie tylko napięcie wyjściowe ale także dodatkowo prąd dławika filtra wyjściowego i prąd obciążenia są zdolne zmniejszyć współczynnik zniekształceń harmonicznych napięcia wyjściowego dla statycznego nieliniowego obciążenia oraz zmniejszyć przeregulowanie i czas dojścia do stanu ustalonego napięcia wyjściowego dla dynamicznego obciążenia. Projekt większości systemów sterowania wymaga znajomości modelu falownika, który opiera się na wyjściowym filtrze LC. Indukcyjność i szeregowa rezystancja dławika powinny być mierzone w punkcie pracy falownika. Artykuł przedstawia falownik napięcia z wielowejściowym systemem sterowania typu „Passivity Based Control” zaprojektowanym w oparciu o pomiary parametrów filtra wyjściowego. Przedstawiono eksperymentalną weryfikację rozważań teoretycznych z wykorzystaniem laboratoryjnego modelu falownika.
4
Content available remote Design and Research on Passive Controller for Three-phase Voltage-source PWM Rectifier
Xie Y., Xu W., Zhang Y.
Przegląd Elektrotechniczny
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2013
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R. 89, nr 3b
68--70
EN
This paper designs crude oil electric dehydration pulse power rectifier control system based on passivity-based control theory. This paper deduces the mathematical model of PWM rectifier on the basis of Euler-Lagrange (EL) Equation, proves passivity stability of PWM rectifier, deduces passivity-based control laws of the system and PWM modulation laws, and finally completes design of PWM rectifier controller.
PL
W artykule opisano sterowanie dla prostownika pracującego w systemie do dehydratacji ropy naftowej metodami elektrycznym, o impulsowym poborze mocy. Algorytm oparty został na teorii pasywności. Zaprezentowano, oparty na równaniach Euler’a-Lagrange’a model matematyczny prostownika. Przedstawiono opracowane algorytmy sterowania i modulacji oraz dowód stabilności pasywnej urządzenia.
5
Content available An EL-model based passivity control of four-phase interleaved PFC
Hua-Wu L., Hong-Xing M., Jian-Feng J., Xi-Jun Y., Xing-Hua Y.
Archives of Electrical Engineering
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2013
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Vol. 62, nr 4
613--628
EN
With the continuous increase of output power ratings, multi-phase (multichannel) interleaved power factor corrector (IPFC) is gradually employed in domestic and commercial inverter air-conditioners. IPFC can solve several main problems, such as power rating increase, power device selection, input current ripple reduction as well as inductor on-board mounting. But for a multi-phase IPFC, the key problem is that it should show rapid dynamic responds and good current sharing capability, so in this paper the aim is to improve the dynamic performance and current sharing capability by means of passivity control theory. Considering the power circuit topology of a four-phase IPFC, an EL (Euler-Lagrange) mathematical model is established when the IPFC operates in continuous conduction mode (CCM). Then the passivity of the four-phase IPFC is proved, and the passivity-based controller using the state variables feedback and damping injection method is designed. The proposed control scheme, which is easy to control and needs no proportion integral controller, has strong robustness on disturbance from singlephase AC input voltage, the load as well as the parameters of the employed devices. Even in wide-range load condition, the mains current has a fast dynamic response and the average output voltage almost keep unchanged. As a result, the main functions of the four-phase IPFC are implemented including nearly unitary power factor and constant DC output voltage. Meanwhile, the four-phase IPFC acquires an excellent current sparing effect after using passivity-based controller. The above analysis has been proved with simulated results by means of MATLAB/SIMULINK and experimental results, showing that the passivity-based IPFC controller has superior performances and feasibility.
6
Content available remote Passivity-based control of single-phase multilevel grid connected active rectifiers
Liserre M.
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2006
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Vol. 54, nr 3
341-346
EN
The use of the passivity-based control (PBe) properly fits stability problems related to multilevel converters. Two approaches for the PBC design have been proposed and will be reviewed in the present paper. Particularly the second is developed by splitting the system into n subsystems and controlling them independently. The partition of the multilevel converter is done on the basis of energy considerations. The main advantage of the second approach is the separate control of the different DC-links and a flexible loading capability.
7
Content available remote Modeling and Control of Induction Motors
Delaleau E., Louis J. P., Ortega R.
International Journal of Applied Mathematics and Computer Science
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2001
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Vol. 11, no 1
105-129
EN
This paper is devoted to the modeling and control of the induction motor. The well-established field oriented control is recalled and two recent control strategies are exposed, namely the passivity-based control and the flatness-based control.
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