Abstract:The VIENNA rectifier is of high reliability, high power density, and low complexity, which has been widely applied in telecommunication systems.However, it has 25 switching states complicating the control design. Besides, it is easy for the VIENNA rectifier to distort the input currents at zero-crossing points, which will degrade the grid power quality. To address these problems, a novel mode-reduction space vector pulse width modulation (SVPWM) control method is proposed in this paper. By analyzing the switch… Show more
“…It has been widely used in wind power generation, electric vehicle charging stations, aerospace, and telecommunication systems. [1][2][3][4] However, when used in energy production and energy consuming equipment, Vienna rectifiers should have good dynamic and static characteristics, wide power ranges, and good power quality. Vienna rectifiers are required to operate in a wide power range with good dynamic regulation, for example, in wind turbine systems and electric vehicle charging stations.…”
Section: Introductionmentioning
confidence: 99%
“…The Vienna rectifier has the advantages of a low switching tube voltage stress, high power density, low input current total harmonic distortion (THD), and high efficiency. It has been widely used in wind power generation, electric vehicle charging stations, aerospace, and telecommunication systems 1–4 . However, when used in energy production and energy consuming equipment, Vienna rectifiers should have good dynamic and static characteristics, wide power ranges, and good power quality.…”
SummaryA Vienna rectifier is a kind of three‐phase converter with complex operation constraints. Traditional control methods suffer from poor dynamic responses and total harmonic distortion (THD), particularly when operating with adjustable wide‐range power. A novel low‐complexity model predictive control (LC‐MPC) algorithm is proposed based on the optimal switching vector sequence in this paper. First, a model predictive optimization control (MPOC) method is designed to search for the voltage vector sequence and its acting time. Second, the equivalent transformation and coordinate mapping of MPOC are efficiently achieved through the derived correlation factors and lookup table. Supported by the correlation factors, the redundant objective function calculation and repetitive online optimization are eliminated. Meanwhile, the simplified optimal over‐modulation strategy is implemented. Finally, the effectiveness and superiority of the algorithm are verified by comparative experiments. The results show that the proposed LC‐MPC is beneficial in terms of the computation time, dynamic response, over‐modulation, and harmonic content reduction.
“…It has been widely used in wind power generation, electric vehicle charging stations, aerospace, and telecommunication systems. [1][2][3][4] However, when used in energy production and energy consuming equipment, Vienna rectifiers should have good dynamic and static characteristics, wide power ranges, and good power quality. Vienna rectifiers are required to operate in a wide power range with good dynamic regulation, for example, in wind turbine systems and electric vehicle charging stations.…”
Section: Introductionmentioning
confidence: 99%
“…The Vienna rectifier has the advantages of a low switching tube voltage stress, high power density, low input current total harmonic distortion (THD), and high efficiency. It has been widely used in wind power generation, electric vehicle charging stations, aerospace, and telecommunication systems 1–4 . However, when used in energy production and energy consuming equipment, Vienna rectifiers should have good dynamic and static characteristics, wide power ranges, and good power quality.…”
SummaryA Vienna rectifier is a kind of three‐phase converter with complex operation constraints. Traditional control methods suffer from poor dynamic responses and total harmonic distortion (THD), particularly when operating with adjustable wide‐range power. A novel low‐complexity model predictive control (LC‐MPC) algorithm is proposed based on the optimal switching vector sequence in this paper. First, a model predictive optimization control (MPOC) method is designed to search for the voltage vector sequence and its acting time. Second, the equivalent transformation and coordinate mapping of MPOC are efficiently achieved through the derived correlation factors and lookup table. Supported by the correlation factors, the redundant objective function calculation and repetitive online optimization are eliminated. Meanwhile, the simplified optimal over‐modulation strategy is implemented. Finally, the effectiveness and superiority of the algorithm are verified by comparative experiments. The results show that the proposed LC‐MPC is beneficial in terms of the computation time, dynamic response, over‐modulation, and harmonic content reduction.
The three‐level Vienna rectifier is widely used in industrial applications, such as electric vehicle charging systems and telecommunication power systems. Discontinuous pulse width modulation (DPWM) is widely used in three‐level AC/DC converters due to its features of switching loss minimization. However, the problems of neutral‐point voltage ripple, current zero‐crossing distortion, and switching losses are mutually coupled for the Vienna rectifier. To address these issues, a hybrid carrier‐based discontinuous pulse width modulation (HCB‐DPWM) with reduced neutral‐point (NP) voltage ripple and current distortion is proposed. First, the /6 clamping period of the conventional DPWM is divided into three‐type clamping intervals, which reduce NP voltage ripple with shortened clamping period. Then, the elimination of current distortion around the current zero‐crossing point and the switching loss reduction are investigated. The implementation of the proposed HCB‐DPWM is given in detail. Finally, the simulation and experimental results of the Vienna rectifier are presented to validate the performance that the proposed HCB‐DPWM can eliminate current zero‐crossing distortion and reduce neutral‐point voltage ripple with different modulation indices.
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