| 摘要 |
An inverter embodiment provided with an enhanced A.C. output signal frequency upper limit and with an improved circuit protection. This protection operates when the load impedance varies outside permitted limits. In the inverter the number m of pairs of controlled rectifiers and inductances is made equal to 2q, q representing groups of at least two pairs, with each group having the series-connected rectifier and inductance components forming one pair connected in parallel with those forming the other pair, the rectifiers being connected to conduct in opposite directions. In addition, a fault detector is connected via an inductance to the output terminals of the DC source and further is coupled to the output which supplies the load. The value of the Q factor of the coupling means, which means are tuned to the A.C. output signal frequency, depends on the load impedance. A major increase in this impedance results in energy being returned to the source. |
