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The explanations of the PWM strategies of a direct matrix converter are classified into “Direct AC/AC converter”, “Virtual AC/DC/AC Conversion” and “Instantaneous Space Vector Diagram”. Since the PWM strategies of matrix converters are complex, it may be difficult to understand the same PWM strategies under the different explanations. This paper presents the visualization of the PWM waveforms of the...
This paper proposes a space vector modulation of a high frequency AC-inked matrix converter which is applied to an electric transformer system. The one of problem of a commercial frequency transformer is bulky and heavy. In order to resolve this problem, we propose to use a high frequency transformer driven by three-phase to single phase matrix converter. In this paper, the virtual indirect control...
This paper presents a design procedure for an output current control and an output damping control of a matrix converter to suppress LC filter resonance and improve transient current response. With a conventional design method which gives preference to stability, the output damping control causes a large output current overshoot and a control bandwidth of the output current is affected. Therefore,...
This paper proposes a novel method of suppressing inrush currents of squirrel-cage induction machines using matrix converter in wind power generation systems. In the proposed method, the series-connected side of the matrix converter behaves as a resistor for the induction machine current. Digital computer simulation is implemented to confirm the validity and practicability of the proposed method using...
This paper focuses on the common-mode voltage (CMV) reduction in direct matrix converter (MC) using direct space vector modulation (DSVM) (SVM) method. Even though a previous DSVM method can reduce the CMV peak value to 42% compared to the traditional DSVM, it has some drawbacks such as high switching loss, high RMS value of CMV, etc. This paper proposes a new DSVM that can mitigate the peak value...
This paper discusses loss analysis formulas to achieve high efficiency and high power density for matrix converter. In this paper, the conduction loss and the switching loss of the matrix converter are derived theoretically based on virtual AC-DC-AC control method. Then, the validity of the equations is confirmed in simulation and experiment. From the experimental results, the maximum efficiency is...
Multi-level matrix converter (MMC) is a three phase ac-ac converter that can synthesize three or more levels at the output voltage while maintaining desired input power factor. In this paper a new converter, Capacitor clamped Multi-level Matrix converter (CMMC) has been proposed as an addition to the MMC family. In comparison to conventional matrix converter, the CMMC offers an additional level at...
This paper introduces a new method of generator brake torque control during Fault Ride Through (FRT) drive for a multi level matrix converter of wind power system. It may be exist that a generator speed become over speed during FRT drive. In this case, a generator has to be fixed brake torque. In the past, generator brake torque control during FRT drive for a matrix converter is impossible. However,...
The future development of high performance power electronics will rely increasingly on system level integration, where semiconductor devices are co-packaged with other active and passive components (e.g., gate-drivers, filter capacitors and inductors) into a power module. In view of the widespread electrification of pivotal elements of the energy generation and distribution infrastructure (e.g., smart-grids,...
This paper presents a new controller for the sensorless linear induction motor (LIM) based on field oriented control driven by matrix converter. Conventional PI controlled has been employed for the speed control of mover. Speed estimation of the mover has been employed using Model Reference Adaptive System (MRAS) technique. The PWM switching technique of the matrix converter is designed based on minimum...
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