The characteristics of a new model based controller for single phase PWM rectifiers

A Unity power factor boost rectifier with a predictive capacitor model for high bandwidth DC bus voltage control

“…It is a fourth order system and a systematic design approach has not yet been developed. In the railway rectifier application a full bridge was used as boost converter, [10]. A classical control approach was used and a dominant pole pair could be identified and the pole locations controlled by selecting the PI control gains.…”

“…One weakness of the classical model developed for railway rectifiers, [10], was the use of a resistive load model. The largest use of the boost rectifier is in consumer appliances as a unity power factor preregulator which is then followed by an isolated DC-DC converter.…”

Boost Rectifier Power Factor Correction Circuits with Improved Harmonic and Load Voltage Regulation Responses

“…Each of the three boost cells uses an inner most loop with a digital predictive current controller, [10], which has been applied in PWM bridge rectifier applications. The basic principles are:…”

“…Figure 4 shows a DC bus voltage regulator based on a capacitor voltage reference model. A similar approach has been proposed for PWM single phase boost rectifiers in railway applications, [10]. A current integration model generates an estimate of the capacitor voltage which has a greatly reduced ripple component.…”

Research on the filters used in the PWM VSR

“…are widely used in DC sources, uninterrupted power supplies (UPS), electric motor drivers and many other systems [2]. Many researches focus in the controllers of the PWM rectifier to achieve the perfect steady and dynamic characters [3]- [8]. To depress the high order harmonics mixed with the useful signal, the inherent filters in the sampling system is necessary, but it can influence the characteristic of the whole system, in this paper, the filters used in the PWM VSR (voltage source rectifier) are analyzed.…”