Matrix converter commutation strategies with and without explicit input voltage sign measurement

Mahlein, J.; Igney, Jens; Weigold, Joerg; Braun, Michael; Simon, Olaf

doi:10.1109/41.993274

Cited by 95 publications

(38 citation statements)

References 8 publications

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“…Principle of the rearrangement of switching states So-called "rearrangement of switching states" is the change of switching sequence in modulation [5]. For example, a single phase switching sequence of MC modulation in a period T s is u a →u b →u c initially (i.e., the output phase links to the input phase a, b, c in turn).…”

Section: Implement Of Rearrangement Of Switching States In Spacementioning

confidence: 99%

“…To avoid short circuit in voltage commutation, we rearrange the switching states in practice, the method we called "rearrangement of switching states". This method doesn't change the mean of input current and output voltage, so the waveforms are sinusoidal all the same [5]. But rearrangement of switching states also brings some problems, on which less research is given.…”

Section: Introductionmentioning

confidence: 97%

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Novel Control Method for Matrix Converter to Reduce Switching Loss

Cai

Zhang

Qiao

et al. 2012

2012 Asia-Pacific Power and Energy Engineering Conference

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The high differential voltage in commutation under transitional space vector modulation strategy is the cause which results in large switching loss of matrix converter. This paper presents a novel method which rearranges the switching sequence according to the magnitude of input voltages, based on the analysis and calculation of switching loss. Combined with voltage commutation strategy, the new modulation method is utilized in matrix converter. The simulation and experiment verify the validity and feasibility of the proposed method.

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Section: Implement Of Rearrangement Of Switching States In Spacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Novel Control Method for Matrix Converter to Reduce Switching Loss

Cai

Zhang

Qiao

et al. 2012

2012 Asia-Pacific Power and Energy Engineering Conference

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“…In line with conventional matrix converters, there are two basic commutation strategies, namely "voltage commutation", which requires the knowledge of the sign of input voltage, and "current commutation", which needs the knowledge of the sign of output current [13], [14]. These strategies can be made in four-steps or two-steps, requiring little dead time between the steps.…”

Section: Mode 10 [T 9 T 10 ]mentioning

confidence: 99%

Comparison of single-phase matrix converter and H-bridge converter for radio frequency induction heating

Nguyen-Quang

Stone

Bingham

et al. 2007

2007 European Conference on Power Electronics and Applications

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This paper compares the newly developed single-phase matrix converter and the more conventional Hbridge converter for radio frequency induction heating. Both the converters exhibit unity power factor, very low total harmonic distortion at the utility supply interface, good controllability under soft switching condition for a wide range of power, and high efficiencies, whilst still having simple structures. A novel switching control pattern has been proposed for the matrix converter in order to maintain the comparable performance to the H-bridge converter. Simulation and experimental results for both converters are presented. Comparisons between two converters have confirmed the excellent performance of the proposed matrix converter.

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“…In addition to protection against power source short-circuits, switching of a matrix converter must be performed so as to prevent load open-circuits, thus protecting the switching elements from surge voltages. Various methods for such commutation have been proposed [7][8][9][10][11][12][13][14][15]; they can be divided into two groups: those detecting the input voltage magnitude relationship (voltage-based commutation), and those detecting the load current polarity (current-based commutation). In both cases, commutation failures may occur because of sensor errors or detection delays.…”

Section: Introductionmentioning

confidence: 99%

Development of a novel commutation method that sharply reduces commutation failure of matrix converters

Kato

Itoh

2009

Electrical Engineering Japan

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SUMMARYThis paper proposes the safest novel commutation method for a matrix converter. There are two conventional commutation methods which depend on the polarity of the input line voltage (it is called "voltage commutation") and depend on the polarity of the output current (it is called "current commutation"). However, problem of the voltage commutation is that commutation failure occurs around zero of the input line voltage. It is difficult to detect its polarity due to depending on offset and delay of the sensor. Similarly, the current commutation failure occurs around zero of the load current. A cause of these detection errors are a detection delay and an offset of a sensor. The proposed commutation method combines the input voltage commutation and the load current commutation. Therefore, the proposed commutation method can decrease the commutation failure without high accuracy sensor. In addition, a voltage error compensation based on the proposed commutation method is proposed in this paper. The proposed method can simply compensate for the commutation error of the output voltage and the input current at the same time.The effects of the proposed method are confirmed by experimental results with a 750 W induction motor and a R-L load. Those results confirm that the proposed commutation can decrease commutation failure. Moreover, the total harmonics distortion of the input current and the output current are 2.6 point and 0.9 point lower than that of the condition without the compensation at 100% output power.

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Matrix converter commutation strategies with and without explicit input voltage sign measurement

Cited by 95 publications

References 8 publications

Novel Control Method for Matrix Converter to Reduce Switching Loss

Novel Control Method for Matrix Converter to Reduce Switching Loss

Comparison of single-phase matrix converter and H-bridge converter for radio frequency induction heating

Development of a novel commutation method that sharply reduces commutation failure of matrix converters

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