Results 281 to 290 of about 476,254 (323)

Controlled resonant converters with switching frequency fixed

1987 IEEE Power Electronics Specialists Conference, 1987
This paper presents a method to regulate the output voltage of resonant DC-DC converter without changing switching frequency. It is based on the concept of changing resonant frequency by using either a variable inductance circuit or a variable capacitance, which is controlled auxiliary switches.
Koosuke Harada, Wen Jian Gu, Katsuaki Murata   +2 more
openaire   +1 more source

A fixed switching frequency predictive current control method for switched reluctance machines

2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012
The paper presents a novel fixed switching frequency predictive current control method for switched reluctance machines (SRM). The proposed deadbeat predictive current controller accurately predicts the required amount of on-time for the PWM pulse for a given reference current in each digital time step over the entire speed range of operation.
Rajib Mikail, Iqbal Husain, Yilmaz Sozer, Mohammad S. Islam, Tomy Sebastian   +4 more
openaire   +1 more source

Fixed switching frequency scheme for current predictive control of DFIG

2022
This paper suggests a new current predictive control algorithm for the wind-driven doubly-fed induction generator (DFIG) based on space vector modulation (SVM) with fixed switching frequency. Combining the current predictive controller and SVM has the benefits of a predictive controller, and fixing the switching frequency improves the output waveform ...
Younesi, Aria, Tohidi, Sajad, Feyzi, Mohammad Reza   +2 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

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

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

All-Fixed Switching Frequency Control of CRM Boost PFC Converter Based on Variable Inductor in a Wide Input Voltage Range

European Conference on Cognitive Ergonomics, 2019
Critical conduction mode (CRM) boost power factor correction (PFC) converter is widely used in low-to-medium power applications for its advantages of high power factor (PF), zero-current turn-on of the switch and no reverse recovery in diode ...
Zhen Zhang, K. Yao, Chunwei Ma, Jienan Chen, Lingge Li, Chanbo Guan, Chengjian Wu   +6 more
semanticscholar   +1 more source

Fixed Switching Frequency Control Using Trapezoidal Current Mode to Achieve ZVS in Three-Level DC–DC Converters

IEEE transactions on industrial electronics (1982. Print)
Generally, the variable switching frequency method is used to operate power converters in triangular current mode (TCM) or near critical conduction mode (CRM) to achieve zero-voltage switching (ZVS).
Zhigang Yao, Xinyu He, Muyang Liu, Jingrui Liu, Ziheng Xiao, Yi Tang   +5 more
semanticscholar   +1 more source

A Computationally Efficient Model Predictive Control Method for Dual Three-Phase PMSM of Electric Vehicle With Fixed Switching Frequency

IEEE transactions on industry applications
Aiming at the problems of large harmonic current, unfixed switching frequency and heavy calculation burden in the model predictive current control (MPCC) methods of dual three-phase permanent magnet synchronous motor (DT-PMSM).
Zhifeng Zhang, Quanzeng Sun, Qingyi Zhang   +2 more
semanticscholar   +1 more source