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In order to simplify the commutation in the virtual rectifier, a zero current commutation model predictive control (ZCC-MPC) method is proposed for the induction motor drive system fed by indirect matrix converter (IMC). Switching states combination is adopted in the virtual inverter instead of single predictive switching state, which ensures that the inverter stage keeps at zero voltage vectors during...
This paper proposes AC/DC converter with high frequency isolation. The proposed converter employs an indirect matrix converter (IMC) to convert three phase AC to high frequency AC using a novel snubber configuration and control suitable for implementation using 6-in-1 module. In an IMC, a snubber circuit is required instead of electrolyte capacitor in order to absorb energy of leakage inductor of...
In this paper, a SVPWM for an indirect matrix converter (IMC) with dual output inverter has been proposed to eliminate the common-mode voltage (CMV). The presented converter is a combination of the conventional rectifier stage and a dual inverter stage for feeding open-end winding load. The principles of selecting suitable active vectors and zero vectors and then properly arranging the switching sequence...
Model Predictive Control (MPC) is an optimization based control method that solves a multi-objective optimization problem to determine the optimal control action that minimizes a given cost function. This control technique is very promising for switching converters because its implementation is straightforward and it has been shown to provide good performance. This paper presents predictive control...
This paper proposes a discontinuous pulse width modulation (DPWM) method for an indirect matrix converter (IMC) driving induction motor (IM) in order to reduce switching losses. The IMC has advantages that long lifetime and reduced volume depending on the lack of capacitors. However, the IMC has many electric switching devices because it is composed of two stages such as a rectifier stage and an inverter...
This paper presents two switching patterns for the indirect matrix converter which models the matrix converter as two separate stages of rectifier and inverter. Both of the proposed patterns keep the number of switching at a minimum and exhibits sinusoidal input and output currents. Simulation of indirect space modulation is presented using PSIM software and the proposed patterns are simulated and...
This paper presents a new space vector modulation (SVM) method for a three-phase five-leg indirect matrix converter (IMC) to drive a three-phase open-end winding load. The inverter stage of the new IMC topology is composed of five legs instead of the conventional six legs for the three-phase open-end winding load applications. The SVM method to drive the five-leg IMC is developed to operate the inverter...
This paper proposes a three-phase input indirect matrix converter topology for a dual ac-drive system with modified switch control schemes, along with addition of a leg. This topology is developed based on a very sparse matrix converter with addition of a leg in the inverter stage, which can reduce the amount of power transistors compared to the conventional dual matrix converter system and; therefore,...
Recently a single-input-dual-output unidirectional matrix converter has been proposed based on unidirectional indirect matrix converter and nine-switch inverter. This paper develops and generalizes (Uni- and) Bi-directional single-input-dual-output matrix converters using a (Uni- or) Bi-directional current-source rectifier (CSR) and dual-output inverter (nine-switch or Five-Leg inverter). Features...
In this paper a high performance Direct Torque Control (DTC) theme for the induction motor fed by indirect matrix converter is proposed and investigated. Since the indirect matrix converter has an intermediate dc link, the control process can be separated into rectifier stage modulation and inverter stage modulation. Indirect space vector modulation (ISVM) for input current is applied on the rectifier...
This paper proposes an actively controlled three-level Z-source matrix converter with capability of performing output voltage buck-boost, and producing sinusoidal input-output quantities. The converter is in principle realized by inserting a Z-source impedance network to the dc-link of the otherwise voltage-buck only indirect matrix converter (IMC), formed by cascading a front-end current source rectifier...
This paper proposes a space vector modulation scheme for a new single phase to three phase power converter that using an active buffer. The proposed circuit is based on the control theory of an indirect matrix converter which can successfully reduce the volume of the smoothing capacitor in the DC link part. The proposed circuit needs to control the output voltage and the buffer current at the same...
This investigation presents a current control method for an indirect matrix converter. The method, called predictive current control selects the switching state that minimizes the error in the output currents according to their reference values and, at the same time, the control scheme is enhanced by including a reactive power minimization strategy with the goal to have unity power factor in the input...
This paper presents a novel Direct Torque Control (DTC) of Doubly-Fed Induction Machine (DFIM) based on Indirect Matrix Converter (IMC). The matrix converter allows many advantages compared to the conventional voltage or current source inverters. Functionally the IMC is very similar to the Direct Matrix Converter (DMC) but it has separate line and load bridges. Indirect matrix converter has no electrolytic...
The combination of indirect matrix converter with direct torque control is a way towards energy-saving of the world. This paper investigates the use of four-step switching in rectifier bridge of indirect matrix converters to reduce the electromagnetic torque ripple which appears when direct torque control technique is used in induction motors. By suitably selecting switching pattern, the electromagnetic...
This paper proposes a novel control method of an indirect matrix converter to reduce the switching loss of inverter stage and to reduce the junction temperature at the low output frequency operation. The proposed control method achieves the zero-voltage switching (ZVS) operation in the inverter stage instead of the rectifier stage as in the conventional method. As a result, this method reduces the...
The topology and control method of indirect matrix converter (IMC) is discussed in the paper. The space vector pulse width modulation (SVPWM) is employed on both of the rectifier stag and the inerter stage. The adjustment method of input power factor is presented based on the input current SVPWM of the rectifier stage. According to the polarity requirement of dc-link voltage, the regulation range...
A predictive control scheme for the indirect matrix converter including a method to mitigate the resonance effect of the input filter is presented. A discrete-time model of the converter, the input filter and the load is used to predict the behavior of the reactive power and the output currents for each valid switching state. The control scheme selects the state that minimize the value of a cost function...
A novel three-to-single-phase power converter that allows for smaller smoothing capacitors in the DC link is proposed. Large smoothing capacitors are conventionally required in such converters to absorb power ripple at twice the frequency of the single phase AC. The proposed topology consists of an indirect matrix converter and an active snubber to absorb the power ripple, and does not require a reactor...
This paper describes a novel control strategy of a direct-power-control based indirect matrix converter. The key of this strategy is direct selection of a switching state of the indirect matrix converter on the basis of instantaneous power errors. A relationship between the instantaneous power and the switching state of the indirect matrix converter is theoretically analyzed, which is essential to...
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