Abstract
This paper presents a modification of the Vienna rectifier (VR) to obtain more than three voltage levels at the DC line connection, while preserving the unity power factor at the AC grid side. The proposed unidirectional multilevel there-phase rectifier, called the 'Negev rectifier', has a reduced device count and utilizes a unique novel Time Division Multiplexed based control scheme, which makes the challenging N-level VR expansion possible. The Negev rectifier can serve as a grid interface for supplying dc voltage to multilevel inverters with 4 up to 7 voltage levels, eliminating the burden of inverter-side voltage balancing control. The Negev hardware can be constructed by two complementary topologies, making it suitable for either high current or high voltage applications.
Original language | English |
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Article number | 8867933 |
Pages (from-to) | 462-473 |
Number of pages | 12 |
Journal | IEEE Transactions on Energy Conversion |
Volume | 35 |
Issue number | 1 |
DOIs | |
State | Published - 1 Mar 2020 |
Keywords
- Vienna rectifier (VR)
- average model
- multilevel rectifier
- on-off control
- self-oscillating modulation
- time division multiplexing
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering