Pure Sinusoidal Output Current-Source Inverter Using New Current Waveform Generation Technique

2019 ◽  
Author(s):  
Eka Rakhman Priandana ◽  
Toshihiko Noguch
Keyword(s):  
Current Source ◽  
Current Waveform ◽  
Output Current ◽  
Current Source Inverter ◽  
Generation Technique ◽  
Waveform Generation

scholarly journals Improving output current of inductor-cell based five-level CSI using hysteresis current controller

2021 ◽  
Vol 12 (1) ◽  
pp. 249
Author(s):  
Suroso Suroso ◽  
Winasis Winasis ◽  
Priswanto Priswanto ◽  
Sholikhah Sholikhah
Keyword(s):  
Voltage Drop ◽  
Current Source ◽  
Current Waveform ◽  
Output Current ◽  
Current Source Inverter ◽  
Integral Current ◽  
Current Controller ◽  
Hysteresis Controller ◽  
Power Switches ◽  
Inverter Circuit

Current source inverter (CSI) operates to output a specified ac current waveform from dc current sources. Talking about power quality, harmonics distortion of ac waveform is a problem of an inverter circuit. Generating a multilevel current waveform will have less harmonics content than a traditional three-level current waveform. In addition to non-ideal conditions of power switches, i.e. voltage drop in diodes, conductors or controlled switches, the performance of current controller applied in an inverter circuit will considerably affect the ac waveform quality produced by inverter circuit. This paper presents and discusses application of hysteresis current controller in the five-level H-bridge with inductor-cell current source inverter. The current controller performance was compared with the proportional integral current controller. Some test results are presented and discussed to explore the advantages of hysteresis controller in reducing the current ripple and harmonics distortion of output current.

A Generalized Three-Phase Multilevel Current-Source Inverter Topology

2011 ◽  
Vol 88-89 ◽  
pp. 373-378
Author(s):  
Jian Yu Bao ◽  
Wei Bing Bao ◽  
Zhong Chao Zhang
Keyword(s):  
Control Strategies ◽  
Current Source ◽  
Voltage Source ◽  
Output Current ◽  
Current Source Inverter ◽  
Multilevel Structure ◽  
Three Phase ◽  
Dc Current ◽  
And Control ◽  
Inverter Topology

A generalized three-phase multilevel current-source inverter (MCSI) topology is proposed by implanting the generalized N-level current cells into a three-phase MCSI topology which is derived from the three-phase multilevel voltage-source inverter (MVSI) topology through dual conversion. In the generalized three-phase MCSI topology, each intermediate dc-link current level can be automatically balanced without adding any external circuits, thus a true multilevel structure is provided. Output current of each phase is independently modulated because of being supplied with two DC current-sources. This allows the wealth of existing knowledge relating to the operations, modulations and control strategies of multilevel VSI to be immediately applied to such multilevel CSI. Simulation results of 5-level and 7-level CSI systems are presented to verify the proposed three-phase MCSI topology.

The Application of Sliding Mode Control in Current Source Converter

2014 ◽  
Vol 945-949 ◽  
pp. 2331-2337
Author(s):  
Jing Bai ◽  
Shi Qi Lu ◽  
Jian Liu
Keyword(s):  
Control Strategy ◽  
Sliding Mode ◽  
Current Source ◽  
Variable Structure ◽  
Current Waveform ◽  
Output Current ◽  
Fast Tracking ◽  
Control Scheme ◽  
Existence Domain ◽  
Current Source Converter

Current source converter is a variable structure system due to its switching nature, so that it can easily cause the output current waveform distortion and can not be accurately track the reference current. To solve the above problems, this paper proposes a new variable structure control strategy with fan-shaped sliding domain in the current source converter control system. In the control strategy, the paper deduces the switching surface and switching control law of SMVSC, and calculates the sliding existence domain based on the mathematical model of current source converter. Finally, the simulation results show that the control scheme can make current source converter have better output current waveform, fast tracking the reference current, and strong anti-interference ability. Therefore, the control scheme is correct, effective and feasible.

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