| Popis: |
Multilevel Inverters have widespread industrial drive applications, HVDC and UPS. Multi-level Inverters also find major application in the Stand-alone and Grid- connected Systems. The conventional two-level inverters have some limitations in operating at high frequencies mainly due to switching losses and constraints in device rating. The problem is resolved by means of Diode- clamped multilevel inverters (MLIs) which utilize lower switching frequencies and give high voltages with improved total harmonic distortion (THD) without use of filter. This paper presents the principle of operation, analysis and Simulink implementation for three phase -5-level and three-phase -7-level Diode-clamped Multi Level Inverters. The comparison of 5-level and 7-level diode-clamped Multi level inverters is presented in terms of THD, Output Voltage. |
