| Abstract |
This paper proposes improvement schemes of the voltage
control performance for the matrix converter. The voltage control
performance is deteriorated because of the commutation method,
the output voltage error, and the input voltage disturbance such as
the input voltage distortion and unbalance, in general. Firstly,
two types of the commutation methods are described in this paper.
The switching loss is compared through simulations, and the
converter efficiency is compared through experiments on the two
methods. Secondly, the output voltage error is analyzed and an
error compensation scheme is proposed in this paper. The
experimental results show the THD of the output current can be
decreased with the proposed compensation. Finally, in order to
decrease the distortion of the output voltage in case of the input
voltage disturbance, a novel compensation method for the input
voltage disturbance is proposed. The adequacy of the method is
proved by simulations and experiments. Motor drive
characteristics of a 22kW proto type matrix converter, equipped
with the proposed methods, are also shown. |
