Results 261 to 270 of about 425,800 (302)

An improved model predictive control strategy with fixed switching frequency

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
This paper presents an improved model predictive control strategy with fixed switching frequency. The proposed method adds four virtual voltage vectors to the four real voltage vectors of the conventional finite control set model predictive control to reduce the harmonic content of the grid current and uses a modulator to realize fixed switching ...
Guiping Du, Jiajian Li, Zhifei Liu
openaire   +1 more source

A constant hysteresis-band current controller with fixed switching frequency

Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on, 2002
This paper proposes a constant hysteresis-band current controller with lower fixed switching frequency by adding zero mode control at proper time. An extra k-band is introduced for creating a degree of freedom to achieve constant switching frequency and maintain fixed hysteresis-band simultaneously.
Ching-Tsai Pan Ching-Tsai Pan, Yi-Shuo Huang Yi-Shuo Huang, Tai-Lang Jong Tai-Lang Jong   +2 more
openaire   +1 more source

Random modulation techniques with fixed switching frequency for three-phase power converters

IEEE Transactions on Power Electronics, 2000
This paper proposes a new family of random modulation techniques for three-phase power converters which operate with a fixed switching frequency. The techniques are based on adjusting the duration of the zero-vectors or adjusting the three PWM pulses in a switching period.
Bech, Michael Møller; id_orcid 0000-0001-9997-4590, Blaabjerg, Frede; id_orcid 0000-0001-8311-7412, Pedersen, John Kim   +2 more
openaire   +2 more sources

Fixed-frequency boundary control of buck converters with second-order switching surface

2008 IEEE Power Electronics Specialists Conference, 2008
A fixed-frequency boundary control of buck converter will be presented in this paper. The methodology is based on integrating the concept of variable hysteresis into the previously proposed boundary control technique with second-order switching surface.
Wai-To Yan, Carl Ngai-Man Ho, Henry Shu-Hung Chung, Keith T. K. Au   +3 more
openaire   +1 more source

Digital current controller with fixed switching frequency based on controlled-type soft-switching inverter

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
Variable switching frequency is an unsolved problem in controlled-type soft-switching inverter. This paper presents two controlled-type soft-switching current modulations capable to achieve fixed switching frequency, one is by the combination of hysteresis control and triangular carrier control, the other is by variable hysteresis bandwidth. Meanwhile,
Jiali Wang, Dehua Zhang, Zhengyu Lv
openaire   +1 more source

Single-phase switch-mode rectifier employing voltage-reversal circuit switched with a fixed frequency

IEE Proceedings - Electric Power Applications, 1995
A single-phase switch-mode rectifier employing a voltage-reversal circuit is studied. The voltage-reversal circuit is switched with a fixed frequency in order to give a supply current with a sinusoidal waveform and a near-unity power factor independent of the working conditions, and to suppress the magnetic noise caused by the low-order harmonics.
H. Oishi, H. Okada, K. Ishizaka, R. Itoh
openaire   +1 more source

Predictive Current Control with fixed switching frequency for an NPC converter

2015 IEEE 24th International Symposium on Industrial Electronics (ISIE), 2015
In this paper a Predictive Current Control strategy is proposed for constant switching frequency operation and verified with a neutral-point-clamped (NPC) converter for load current regulation and DC-link capacitor voltages balancing. The aim of this control technique is to obtain a modulated waveform at the output of the converter, whilst maintaining ...
M. Rivera, M. Perez, C. Baier, J. Munoz, V. Yaramasu, B. Wu, L. Tarisciotti, P. Zanchetta, P. Wheeler   +8 more
openaire   +1 more source

Fixed switching frequency hybrid control for a permanent magnet synchronous machine

2004 IEEE International Conference on Industrial Technology, 2004. IEEE ICIT '04., 2005
In this paper, we present a novel control strategy for motor drivers, which we have called fixed switching frequency hybrid control (FSPHC). Based on models of both motor and inverter, the hybrid control uses a formal representation of the inverter-machine group behaviour.
F. Morel, J.-M. Ratif, X. Lin-Shi, A.M. Llor   +3 more
openaire   +1 more source

Discrete-Time Super-Twisting Sliding Mode Current Controller With Fixed Switching Frequency for Switched Reluctance Motors

IEEE Transactions on Power Electronics, 2022
This paper proposes a discrete-time super-twisting sliding mode (DTSTSM) current controller for switched reluctance motors. A novel gain design procedure is proposed, guaranteeing a systematic and straightforward design stage. The method makes use of a cost function, enabling the gains that yield the best trade-off between reference tracking and low ...
Filipe P. Scalcon, Gaoliang Fang, Rodrigo P. Vieira, Hilton A. Grundling, Ali Emadi   +4 more
openaire   +1 more source

Predictive-fixed switching frequency technique for 5-phase induction motor drives

2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2016
This paper presents an enhanced predictive current control technique with fixed switching frequency applied to the 5-phase induction drives. This approach accurately predicts the required duty ratio for the PWM pulse for a given current reference in each digital time step using the vector space decomposition theory.
R. Gregor, J. Rodas, J. Munoz, M. Ayala, O. Gonzalez, D. Gregor   +5 more
openaire   +1 more source