A PWM AC-to-DC converter with fixed switching frequency

Application of Input-Output Linearization

“…The output is composed of capacitance and resistance. Considering state variables on the circuit of Fig.1 and applying Kirchhoff laws, model of VSC in the three-phase reference frame can be obtained, as in (Wu et al, 1988(Wu et al, , 1991Blasko & Kaura, 1997).…”

“…References (Ooi et al, 1987;Dixon&Ooi, 1988;Dixon, 1990;Wu et al, 1988Wu et al, , 1991 realize current control of L filtered PWM rectifier at three -phase system. Reference (Blasko & Kaura, 1997) derives mathematical model of Voltage Source Converter (VSC) in d-q and -frames and also controlled it in d-q frames, as in (Bose, 2002;Kazmierkowski et al, 2002).…”

Investigation of Power Quality Improvement in Super Lift Luo Converter

“…The main purpose of the proposed system is to design a single phase AC-DC super lift Luo converter offering high input power factor with reduced THD even under source and load variations. To achieve this PI-fuzzy current controllers for voltage and current control are adapted in this paper, since conventional PI current controller requires an accurate and precise mathematical modelling and it ineffective during parameter variation, nonlinearity, load disturbance, etc., [20]- [24], and whereas hysteresis controller will limit the error value only to certain limits [25]- [26]. The fuzzy current controller gives very fast response and improves the reliability of the system [27]- [29].…”

Research on deadbeat Current Control Strategy of Three-Phase PWM Voltage Source Rectifier

“…Later the direct current control method bring in the current feedback, it has such advantages as quick dynamic response, easy current limiting and higher current control precision, etc [2]. There are many methods of direct current control: fixed switching frequency PWM current control [3], hysteretic current PWM control [4,5] and deadbeat control. Fixed switching frequency PWM current control algorithm is simple, achievable and convenient, but in the condition when the switching frequency is not high, current dynamic response is slow, and the current dynamic deviation change with the current rate change accordingly.…”