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Z-source inverter is a recently proposed single-stage inverter with added voltage-boost capability for complementing the usual voltage-buck operation of a traditional voltage-source inverter. In spite of that added feature, the overall voltage gain might still be relatively low for certain applications like the grid connection of low-voltage renewable sources that might not favor multiple series connection...
Multilevel inverters are getting more and more attracted because they have better output waveform quality and lower semiconductor voltage stress. The Z-source NPC is a kind of single stage multilevel inverter which has the ability of voltage boost. But the boost capability is relatively low when they are subject to the renewable sources. To date, three distinct types of impedance networks can be summarized...
Hybrid-source impedance networks have attracted attention among researchers because of their flexibility in performing buck-boost energy conversion. To date, three distinct types of impedance networks can be summarized for implementing voltage-type inverters, with another three types summarized for current-type inverters. These impedance networks can in principle be combined into a single generic...
Inspirited by the Z-source inverter, a new power converter (named as Z-H converter) is presented in this paper. The basic operating principle of Z-H converter and Z-source inverter are similar and they have the same equations in boost mode. The new converter employs an impedance network similar to that in the Z-source inverter but with different connection. Therefore the new topology has different...
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