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The article discusses the method of realisation and principle of operation, complemented by the results of simulation tests, of the 36-pulse rectifier with a system of coupled three-phase reactors. Moreover, the paper presents sample calculations of basic parameters, including the reactor rating power, which are required in the design process. It also presents various configuration variants of windings...
The paper deals with three-phase AC/AC frequency converter. Implementation of the current source matrix converter (CSMC) with space vector modulation (SVM) is presented. The specialized DSP and FPGA cards are used in the control circuit realization. Experimental test results of ca 1 kVA laboratory model are presented to confirm of the discussed CSMC properties.
This paper discusses problems related to more cost-effective operation of wind parks. A new rational solution of storing excess energy in the form of hydrogen is described. As hydrogen is produced by the electrolysis process, focus here is on electrolyser and wind turbine interconnections with relevant converter topologies and on the most feasible options.
Switched reluctance motor is simpler and more cost-effective than other small power electrical motors. The paper proposes a new electrical scheme with energy buffer and an average values mathematical model for this kind of motor, which provide a basis for calculation or computation of its characteristics. A computation example of dynamic and static characteristics is presented.
This paper deals with the implementation of a new solution for a three-phase AC transformer with electromagnetic and electric coupling (hybrid coupling). The electromagnetic coupling is realized by means of the conventional three-phase transformer (TR) with two secondary windings in each phase. The electrical coupling is realized by means of a matrix chopper (MC), which is supplied from auxiliary...
This paper deals with a three-phase matrix-reactance frequency converter (MRFC). The analysed MRFC topology is based on buck-boost matrix-reactance chopper (MRC) one with source synchronous connected switches (LSCS) set arranged as in the step-up matrix converter (MC). The MRFC in question makes it possible to obtain a load output voltage much greater than the input voltage. Presented in this paper...
The constructive schemes of switched reluctance motor and basic electrical scheme of a commutator with capacity buffers of energy are circumscribed. A mathematical model to a research of electromechanical processes in electric drives with switched reluctance motor with buffers of an energy is explained.
This paper presents part of a 50 kW APS (auxiliary power supply) control system and relevant EMC problems. The design process of three different PCBs (printed circuit board) in consideration of EMC is described In the analysis, positive and negative features of developed PCBs are discussed. Finally, recommendations are made for further steps.
This paper deals with a three-phase direct matrix-reactance frequency converter (MRFC) with buck-boost topology and includes a description of its topology and operation plus presentation of the results of an investigation of its properties. Presented too is a conceptual development of the frequency converter based on a buck-boost matrix-reactance chopper (MRC) with source switches arranged as in a...
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