Switching technique for current-controlled AC-to-AC converters
Jang-Hyoun Youm; Bong-Hwan Kwon
Industrial Electronics, IEEE Transactions on
Volume 46, Issue 2, Apr 1999 Page(s):309 - 318
Digital Object Identifier 10.1109/41.753769
Summary:The AC-to-AC converter called the matrix converter is very simple
in structure and has powerful controllability. However, there are few
practical applications, particularly in power electronics fields. The
major reasons largely lie in the commutation problem and complexity of
the control circuit. This paper proposes a novel commutation technique
which is very simple to implement. This commutation scheme allows the
deadtime to avoid current spikes of nonideal switches and, at the same
time, establishes a current path of the inductive load to avoid voltage
spikes. A switching technique of the matrix converter using a
space-vector-modulation (SVM) based hysteresis current controller (HCC)
is also proposed. The switching technique is implemented without any
computational burden and is controlled with a simple control circuit.
This technique utilizes advantages of the HCC and SVM technique.
Simulation and experimental results obtained on a 5 kW single-phase AC
chopper and an 11 kW three-phase to three-phase matrix converter are
discussed
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