Flowchart of NLC with conventional sorting algorithm In the tolerance ...
Flowchart of NLC with conventional sorting algorithm In the tolerance band sorting algorithm , the switching losses are reduced by putting a tolerance band of δ on the capacitor voltage.
Download scientific diagram | Flowchart of the implemented CVB algorithm in NLC . from publication: FPGA-Based Implementation of MMC Control Based on Sorting Networks | In Modular Multilevel ...
A Study on the Improved Capacitor Voltage Balancing Method for ...
The characteristics of conventional capacitor voltage balancing methods, such as the nearest level control ( NLC ) with full sorting method, the NLC with reduced switching frequency method, and the tolerance band (TB) method, implemented on a physical control system based on this implementation methodology, are compared and analyzed.
Scheme of the NLC algorithms considered in this article: conventional PBE (solid lines in (a)) and the joint algorithm formed by the PBE being followed by the NN (b) (solid and dashed lines in (a)).
Comparative Assessment of Modulation Strategies in Modular Multilevel ...
This study compares six modulation methods for MMCs: Nearest Level Control ( NLC ), Integral Modulation (IM), and PWM using a traditional sorting algorithm , alongside their modified versions featuring the novel sorting algorithm . The effectivenss of each modulation technique discussed in this article is verified through experimental tests.
In particular, the adopted NLC control is based on a sorting algorithm (see Figure 4) taking the decision of which power cell will be inserted (±1 mode) or bypassed (0 mode) at every time step, T ...
Improved Algorithm for NLC Strategy in Modular Multilevel Matrix ...
This paper presents an improved sorting algorithm for keeping the low-frequency switching using a fully decoupled current control along with the double αβγ transformation, which allows an internal balancing current control of the n-cells in an M 3 C converter.
The control structure with the NLC algorithm is sampled at a frequency of at least (10.2.f (1)) with f (1) being the sketched in Fig. 4 (b). The switching and the THD fundamental AC frequency.
Performance comparison of phase shifted PWM and sorting method for ...
This paper presents a comparison between the steady-state performances in terms of output voltage THD and equivalent switching frequency of the Phase Shifted Carrier PWM and NLC plus sorting methods.
The capacitor balancing controller (CBC) is used to sort SM capacitor voltages prior to modulation. This paper investigates the variation in sorting complexity at steady state and transient conditions for a brute-force and past-position methodology based on the bubble sort algorithm .