PWM rectifier

About: PWM rectifier is a research topic. Over the lifetime, 2254 publications have been published within this topic receiving 25614 citations.

Design of a battery-charger controller for electric vehicle based on RST controller

Abstract: In order to find better solution for the development of Electric Vehicles (EVs), many research are performed by companies, universities and research laboratories. The main goal of these works is to provide some solutions to reduce the cost, increase the compactness, improve the autonomy and the reliability as well as the vehicle energetic efficiency and last but not least, reduce the global carbon emissions impact of the vehicle. This paper deals with an on-board battery charger for EVs or PHEVs where power electronics are reduced thanks to the use of same power converters in traction and charger mode. RST controllers in discrete time are design to control the PWM rectifier for the single-phase case.

The investigation of PWM rectifier control method

Abstract: In general, power electric device is fed by AC/DC rectifier rather than by direct DC source and the inherent default of the rectifier has more bad influence on the power network. As a result, the PWM-rectifier has been paid more and more attention for unity input power factor, greatly reduced input line current harmonic distortion and bidirectional power flow capability. The paper present the topology of the main circuit, deduce the math model both in a-b-c and a - /spl beta/ reference frame, propose the direct current control scheme, get the current and voltage waveform and analyze the result of simulation which is processed by SIMULINK software on the base of math model.

A fast current control scheme for pwm rectifier

Abstract: In the control of voltage source PWM rectifier, direct current control and dual close loop control structure in d-q synchronous reference frame are widely adopted In this control method, the active and reactive current are separately controlled and synthetical consideration of two currents has been ignored; as a result, this scheme fails to track the reference current quickly and doesn’t obtain better control property By analyzing the factors which influence the fast transient response, this paper puts forward a new control scheme to improve current transient response rate by utilizing the reactive current in transient state Simulation results show that the proposed control scheme has satisfactory steady-state characteristics and fast transient response This control scheme possesses some practical values due to its simple implement

Control of a Three-Phase PWM Rectifier Based on a Dual Single-Input Single-Output Linear Model

Abstract: A state-space-averaged model of a three-phase boost-type PWM rectifier is available in literature. The model is complex with a multi-input multi-output (MIMO) non-linear structure and a non-minimum phase feature. However, such a MIMO non-linear system becomes a dual single-input single-output (SISO) linear system by ignoring certain dynamics and applying a simple feed-forward de-coupling controller. In addition, the non-minimum phase feature is also eliminated in the resultant model. Investigation into the dual SISO model shows that such a model is valid during both steady-state and transient operation provided the closed-loop bandwidth of voltage controller is much less than the corner frequency of the right half plane (RHP) zero which is the cause of the nonminimum phase feature. Thus, the paper presents the range of validity of the proposed dual SISO linear model. A cascaded controller is then implemented in a back-stepping style based on the proposed model. Simulation studies have been carried out to show the effectiveness of the proposed controller and also to illustrate how the non-minimum phase feature affects the behavior of rectifier. The simulation results verify the theoretical predictions

Experimental verification of a dual single-input single-output model of a three-phase boost-type PWM rectifier

Abstract: This paper proposes a simple dual SISO (single-input-single-output) model for a three-phase boost-type PWM rectifier under balanced line voltage conditions. In the proposed model, the q-axis model is a first order linear system determining the power factor regulation, whereas the d-axis model, which is shown to be similar to a traditional DC-DC boost converter, is a second-order non-linear system determining the power delivery. It is much easier to analyze and control a complex three-phase PWM rectifier using the proposed model. In addition, the complex non-minimum phase feature inherent in a AC-to-DC rectifier becomes a simple right half plane (RHP) zero appearing in the small-signal control-to-output transfer function of the proposed d-axis model. The knowledge of RHP zero's location is vital to the successful design of a stable controller for the rectifier, as the presence of the RHP zero imposes a strict limit on the achievable closed loop performance. The validity of the proposed model is verified through experimental Bode plot results obtained using a hardware prototype