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This paper presents an isolated type of single-phase matrix converter topology for PHV/EV on-board battery chargers. The proposed converter is comprised of a full bridge inverter, a high frequency transformer and a matrix converter. Due to the lack of DC link bus in matrix converter, in order to suppress the power fluctuation, a power decoupling method which only employs a center-tapped high frequency...
This paper discusses a modified space vector technique applied to an indirect matrix converter (IMC) which results in the reduction of common mode voltages and other advanced features. The conventional indirect space vector pulse-width modulation (SVPWM) method of controlling matrix converters involves the usage of two adjacent active vectors and one zero vector for both rectifying and inverting stages...
This paper presents an experimental efficiency comparison study between two different AC-AC converter prototypes: the direct matrix converter (DMC) and indirect matrix converter (IMC). The evaluation is performed under different load conditions and using discrete IGBTs at a power level up to 9k[W]. The losses measurement is carried out by means of two power analyzers: one placed at the input and one...
Power quality issues of switch mode converters are becoming a matter of concern due to the rapid growth of renewable energy resources. Voltages and currents of power network system are commonly affected by harmonics produced by power converters. This paper presents formulation of analytical equations to determine the input current and output voltage harmonics of three phase to three phase matrix converter...
Grid connected Electric vehicles (EVs) and Plugin hybrid electric vehicles (PHEVs) can benefit the grid by utilizing Vehicle-to-grid (V2G) technology. V2G enables stored electrical energy in electric vehicle batteries to be returned to the grid for peak demand and other ancillary services. Typically, the onboard electric vehicle battery charger is uni-directional but needs to be bi-directional to...
Matrix converter nonlinear errors due to voltage drop and commutation delay introduce a distortion between voltage reference signals and output phase voltages. In current controlled applications, the current regulators are capable of compensating for such voltage command error. However, where output voltage estimation is required such as in state observers used for sensorless control of ac drives,...
The Direct Matrix Converter (DMC) is a single stage ac-ac power converter topology having no bulk energy storage elements. Model Predictive Control (MPC) is an optimization-based control method that solves a user-defined cost function to determine the optimum control action. This control technique can provide fast dynamic response. However, implementation of model predictive control method imposes...
This paper investigates the use of a novel model-predictive control strategy to control an induction motor fed by a matrix converter. The proposed control method combines the features of classical Model Predictive Control and the Space Vector Modulation technique into a Modulated Model Predictive Control. This new solution maintains all the characteristics of Model Predictive Control (such as fast...
Open-end winding matrix converter drives provide a higher voltage transfer ratio and better output voltage quality with more voltage levels in the output voltage, compared to single matrix converter drives. Pulse Width Modulation (PWM) techniques have been developed for open-end winding drives to suppress switching common-mode voltage at load terminals. The switching of bi-directional switches in...
This paper proposes a Zero Voltage Switching (ZVS) method for an isolated DC to three-phase AC converter using an indirect matrix converter at the secondary side of the transformer. Phase-shift control is applied to the inverter at the primary side of the transformer, while Pulse Density Modulation (PDM) is employed to the indirect matrix converter at the secondary side. The inverter at the secondary...
Many Variable Frequency Drives use low pass passive filters that have wye connected capacitors for performing filtering action. While the passive filters in Active Front End (AFE) PWM drives and in matrix converters are primarily used for filtering PWM frequency components, they are also a major source of power loss as their configuration allows for the flow of circulating currents even when the main...
A novel three-phase/single-phase quasi-Z-source matrix converter (qZS-MC) is proposed in this paper. It extends the voltage gain of traditional MC and has the inherent benefits of MC. The circuit topology is analyzed, and the model is built, which discloses the relationship between the input current harmonic components, qZS impedance and output frequency. The suitable application area is suggested...
This paper presents an alternative approach for analysing and controlling the Modular Multilevel Matrix Converter. After a system description, the proposed current control and branch energy balancing methods are introduced. As distinguished from previous approaches, the presented method is more general and easier applicable to other modular topologies. Its functionality is verified by simulation and...
In this paper, a novel three-phase matrix based isolated AC-DC converter is proposed for DC distribution system. The circuit is derived from boost converter based matrix PWM rectifier by only adding a small commutation capacitor and inductor. Compare to traditional power factor correction rectifier plus DC/DC two-stage configuration, the proposed converter has higher efficiency and power density....
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