The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Zhou Yunbin - One of the best experts on this subject based on the ideXlab platform.
-
Digital Design of 12-Phase Cycloconverter Based on DSP with CPLD
2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006Co-Authors: He Bi, Zhang Xiaofeng, Zhou YunbinAbstract:Recently, analog control is replaced by digital control in Cycloconverter-fed adjustable speed drives. However, Cycloconverter has many thyristors and control signals. Multi-CPU has to be adopted for its complexity. In this paper, main circuit is redesigned due to multi-phase. An interstar winding method is used in insulating transformers to supply 12-phase power. A 12-phase Cycloconverter based on DSP with CPLD is proposed. The inner structure of CPLD is designed especially to generate heavy firing pulses composed of control signal distributor, counting time delay and pulses widening, and pulses distribution parts. Simulation and experiment results denote that a digital Cycloconverter based on DSP with CPLD has the convenience of design and debugging, and has preferable control performance and high reliability
-
The Vector Control Strategies of 12-Phase Cycloconverter-fed Synchronous Motor System
2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006Co-Authors: He Bi, Zhang Xiaofeng, Zhou YunbinAbstract:Polyphase synchronous motors used as propelling motor in ships have a broad application foreground. It is necessary to research polyphase motor variable speed system. In this paper, the vector control strategies of 12-phase Cycloconverter-fed synchronous motor are presented based on the analysis of 12-phase Cycloconverter-fed synchronous motor with air gap-flux-oriented control. Further, the mathematical models of 12-phase synchronous motor in rotor d-q coordinate and in air gap-flux M-T coordinate are obtained. The simulation and experiment of the 12-phase Cycloconverter synchronous motor system is carried out to verify the feasibility and validity of these strategies
N. R. Hamzah - One of the best experts on this subject based on the ideXlab platform.
-
Modelling & Simulation of a new Single-phase to Single-phase Cycloconverter based on Single-phase Matrix Converter Topology with Sinusoidal Pulse Width Modulation Using MATLAB/Simulink
2005 International Conference on Power Electronics and Drives Systems, 2005Co-Authors: Z. Idris, Mustafar Kamal Hamzah, N. R. HamzahAbstract:Single-phase Cycloconverters are used for AC-AC power conversion particular for speed control of AC drives. In this work the Single-phase matrix converter (SPMC) topology is used for Cycloconverter operation are proposed. IGBTs are used for the power switches. The well-known sinusoidal pulse width modulation (SPWM) scheme is used in this instance. This paper presents work on modelling and simulation of Cycloconverter using MATLAB/Simulink incorporating the SimPowerSystem blockset. Simulations are compared with the well-known Pspice simulations to ascertain the accuracy of modelling. Experimental verifications were also carried out to validate the simulation model and the converter.
-
Modelling a Simulation of a new Single-phase to Single-phase Cycloconverter based on Single-phase Matrix Converter Topology with Sinusoidal Pulse Width Modulation Using MATLAB/Simulink
2005 International Conference on Power Electronics and Drives Systems, 2005Co-Authors: Z. Idris, Mustafar Kamal Hamzah, N. R. HamzahAbstract:Single-phase Cycloconverters are used for AC-AC power conversion particular for speed control of AC drives. In this work the Single-phase matrix converter (SPMC) topology is used for Cycloconverter operation are proposed. IGBTs are used for the power switches. The well-known sinusoidal pulse width modulation (SPWM) scheme is used in this instance. This paper presents work on modelling and simulation of Cycloconverter using MATLAB/Simulink incorporating the SimPowerSystem blockset. Simulations are compared with the well-known Pspice simulations to ascertain the accuracy of modelling. Experimental verifications were also carried out to validate the simulation model and the converter.
Trillion Q. Zheng - One of the best experts on this subject based on the ideXlab platform.
-
A new single-phase to three-phase Cycloconverter for low cost AC motor drives
2008 3rd IEEE Conference on Industrial Electronics and Applications, 2008Co-Authors: Xiaofeng Yang, Trillion Q. ZhengAbstract:This paper presents a new single-phase to three-phase Cycloconverter suitable for driving an induction motor. Using discrete variable frequency technique, a single-phase to three-phase modulation strategy is proposed, the output frequency of this cycloconvertor can be up to half of the input frequency. Only six naturally communicated thyristors are employed, so the resulting Cycloconverter-motor drive system is cheap and compact. Software in C and assembly language has been written for real-time control. The simulation based on Matlab/Simulink is used to predict the performance for the Cycloconverter and induction motor.
Ebrahim Babaei - One of the best experts on this subject based on the ideXlab platform.
-
A new PWM based control method for forced commutated Cycloconverters
Energy Conversion and Management, 2020Co-Authors: Ebrahim BabaeiAbstract:In this paper, a new control method is proposed for three-phase to single-phase Cycloconverters for synthesizing the desired output voltage from balanced and unbalanced input voltages. The theoretical analysis of the proposed control method is given for both of the conventional topologies of three-phase to single-phase Cycloconverters. Using the proposed control method, the maximum output/input voltage transfer ratios are 0.5 and 1.5 for conventional Cycloconverters that consist of three and six bidirectional switches, respectively. The proposed control method has no limitation on frequency conversion and is independent of the load. In other words, using the proposed control method, the three-phase to single-phase Cycloconverter can operate as a generalized transformer. Using the proposed control method, the low order harmonics are not generated in the input and output quantities. As a result, the size of the required filters is decreased. The proposed control method can be easily extended to three-phase to n-phase Cycloconverters based on the same principle of the operation. The simulation and experimental results verify the operation and performance of the proposed control method.
-
A new topology for the three-phase to three-phase Cycloconverters
2011 2nd Power Electronics Drive Systems and Technologies Conference, 2011Co-Authors: Ali Aghabeigi Heris, Meisam Sadeghi, Ebrahim BabaeiAbstract:This paper proposes a new topology for three-phase to three-phase Cycloconverters. In the proposed topology, in order to generate the desired output voltage, the main states of switches are decreased in comparison with conventional topologies of three-phase to three-phase Cycloconverters which can improve the performance of the Cycloconverter. Increasing of the maximum output/input voltage transfer ratio of converter up to 1.5 is one of the main advantages of the proposed Cycloconverter. In addition, there is no restriction for generation of output frequency consequently; the proposed Cycloconverter can be applied as both step-up and step down converters. The control strategy of Cycloconverter is based on pulse width modulation (PWM) method. Using PWM based control strategy, the injected harmonics will be produced around the switching frequency and its multiple coefficients and the size of filters will be decreased. Also, a feedback of output voltage is used in the control strategy of the proposed converter to improve its performance. The proposed Cycloconverter is simulated using PSCAD/EMTDC software and simulation results for both balanced and unbalanced load are presented to validate the effectiveness and performances of the new proposed topology.
-
PWM-based control strategy for forced commutated Cycloconverters
2009 IEEE Symposium on Industrial Electronics & Applications, 2009Co-Authors: Ebrahim Babaei, Ali Aghabeigi HerisAbstract:This paper presents a new control method for three-phase to single-phase Cycloconverters based on pulse width modulation (PWM) technique. Due to the proposed control method, the desired output voltage can be generated even with unbalanced input voltages. The proposed control method can easily be extend to three-phase to n-phase Cycloconverters. The theoretical analysis based on the proposed method is given for both of the conventional topologies of three-phase to single-phase Cycloconverters. Using the proposed control method, the maximum output/input voltage transfer ratios for balanced operation are 0.5 and 1.5 for Cycloconverters that consist of three and six bidirectional switches, respectively. It is important to note that the low voltage transfer ratio is an intrinsic limitation of the conventional control methods. This method has no limitation on frequency conversion and is independent of the load. In other words, using the proposed control method, the three-phase to single-phase Cycloconverter can operate as a step-up voltage and frequency. The other advantage of this method is no low order harmonics in the input and output quantities. Therefore, the size of required filters is decreased. The operation and performance of the proposed control method has been verified by simulation and experimental results of a three-phase to single-phase Cycloconverter.
He Bi - One of the best experts on this subject based on the ideXlab platform.
-
Digital Design of 12-Phase Cycloconverter Based on DSP with CPLD
2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006Co-Authors: He Bi, Zhang Xiaofeng, Zhou YunbinAbstract:Recently, analog control is replaced by digital control in Cycloconverter-fed adjustable speed drives. However, Cycloconverter has many thyristors and control signals. Multi-CPU has to be adopted for its complexity. In this paper, main circuit is redesigned due to multi-phase. An interstar winding method is used in insulating transformers to supply 12-phase power. A 12-phase Cycloconverter based on DSP with CPLD is proposed. The inner structure of CPLD is designed especially to generate heavy firing pulses composed of control signal distributor, counting time delay and pulses widening, and pulses distribution parts. Simulation and experiment results denote that a digital Cycloconverter based on DSP with CPLD has the convenience of design and debugging, and has preferable control performance and high reliability
-
The Vector Control Strategies of 12-Phase Cycloconverter-fed Synchronous Motor System
2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006Co-Authors: He Bi, Zhang Xiaofeng, Zhou YunbinAbstract:Polyphase synchronous motors used as propelling motor in ships have a broad application foreground. It is necessary to research polyphase motor variable speed system. In this paper, the vector control strategies of 12-phase Cycloconverter-fed synchronous motor are presented based on the analysis of 12-phase Cycloconverter-fed synchronous motor with air gap-flux-oriented control. Further, the mathematical models of 12-phase synchronous motor in rotor d-q coordinate and in air gap-flux M-T coordinate are obtained. The simulation and experiment of the 12-phase Cycloconverter synchronous motor system is carried out to verify the feasibility and validity of these strategies
-
Digital Design of 12-Phase Cycloconverter Based on DSP with CPLD
2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006Co-Authors: He Bi, Zhang XiaofengAbstract:Recently, analog control is replaced by digital control in Cycloconverter-fed adjustable speed drives. However, Cycloconverter has many thyristers and control signals. Multi-CPU has to be adopted for its complexity. In this paper, main circuit is redesigned due to multi-phase. An interstar winding method is used in insulating transformers to supply 12-phase power. A 12-phase Cycloconverter based on DSP with CPLD is proposed. The inner structure of CPLD is designed especially to generate heavy firing pulses composed of control signal distributor, counting time delay and pulses widening, and pulses distribution parts. Simulation and experiment results denote that a digital Cycloconverter based on DSP with CPLD has the convenience of design and debugging, and has preferable control performance and high reliability.
