Integrated Control of Five-Level Diode-Clamped Rectifiers
Umbría Jiménez, Francisco
Salas Gómez, Francisco
Gordillo Álvarez, Francisco
|Department||Universidad de Sevilla. Departamento de Ingeniería de Sistemas y Automática|
|Abstract||This paper presents an approach for dealing with the control of ﬁve-level, diode-clamped rectiﬁers. The control of such converters is challenging since the voltage balancing among capacitors is not a trivial task. Some of ...
This paper presents an approach for dealing with the control of ﬁve-level, diode-clamped rectiﬁers. The control of such converters is challenging since the voltage balancing among capacitors is not a trivial task. Some of the existing approaches that cope with this problem use speciﬁc modiﬁcations of one of the traditional modulation techniques such as using redundant vectors in SVM. The main feature of the proposed technique is that part of the modulation is considered in the system equations and, in this way, the voltage balance can be solved designing a speciﬁc controller for this problem. As a result, several levels are used within a switching period. Furthermore, it is shown that the proposed approach hardly affects the control of active and reactive powers and total dc-link voltage in such a way that the well-known direct power control (DPC) can be applied. As a consequence, the resultant modulation stage is simpler than other techniques based on, e.g., space vector modulation (SVM). The effectiveness and good performance of the system under the proposed control approach are validated by both simulation and experimental results.
|Citation||Montero-Robina, P., Umbría, F., Salas, F. y Gordillo, F. (2019). Integrated Control of Five-Level Diode-Clamped Rectifiers. IEEE Transactions on Industrial Electronics, 66 (9), 6628-6636.|