content than that for the two-level converter. Therefore, it

does not require ac filters. The absence of a switching

frequency component the arm current and operation

of switching devices at reduced frequency shows that the

M2C may produce lower audible noise than the two-level

converter.-

content than that for the two-level converter. Therefore, it

does not require ac filters. The absence of a switching

frequency component　the arm current and operation

of switching devices at reduced frequency shows that the

M2C may produce lower audible noise than the two-level

converter.