Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 4 of 4 for “"reduced switching frequency"”.
-
Improving Inverter Efficiency at Low Power Using a Reduced Switching Frequency
… must be kept low. In this thesis, the impact of switching frequency upon switching loss for a SPWM inverter is investigated. Results, from mathematical modeling, simulation and experimental implementation, show the same trend that reducing the switching frequency reduces switching loss at low …
-
High performance on-line control of three-phase PWM current-source converters
… PWM space-vector based modulating technique with reduced switching frequency, (c) an inner voltage control loop and an outer modulation index control loop for inverter topologies, and (d) a non-linear control scheme for rectifier topologies. The resulting power conversion schemes demonstrate the …
-
Efficiency Improvement Strategies and Control of Permanent Magnet Motor Drives
… currents in PMBDC machines and (ii) lowering switching frequency of inverter driving the PMSM but without having significant low ordered sidebands of currents. Both these methods are applicable to existing types of permanent magnet motors and hence do not upset their existing optimized designs.
-
Current source based wind energy conversion system
… by continuous pulse angle changes and a fixed switching frequency over the full modulation index range. These attributes show that the proposed BTB-DPWM-CSC WECS is suited for multi-megawatt applications. The second and third WECSs are based on modified three-phase and dual three-phase …