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This paper describes the developments at home and abroad , the inverter analyzes the shortcomings and limitations of traditional inverter , analyze a new Z - source inverter , it can overcome the deficiencies of traditional inverter , and has the new features that are not in the conventional inverter . The second chapter of the current Z- source inverter mathematical modeling of three-phase coordinate system modeling two-phase stationary coordinate system modeling and two-phase rotating coordinate system modeling , for subsequent applied research theory foundation. Chapter 3 analyzes the current Z- source inverter works , including the main circuit topology , Z - source inverter lifting pressure principle and Z - source inverter main circuit design . Z source inverter control strategy described in detail in Chapter IV . As the current Z- source inverter allows to open zero vector exist , so the traditional control strategy is no longer applicable to the Z - source inverter , this paper presents a three-valued logic control strategy - three-valued logic conversion can be control logic used in the traditional Z - source inverter . Then Z - source inverter , pulse width modulation strategy carried out in-depth study , including the third harmonic injection modulation method , trapezoidal wave modulation frequency PWM technology , the current instantaneous value of single - loop feedback control and space vector modulation strategy . Chapter Z - source inverter control strategy based on SIMULINK model simulation . II - the conversion of three-valued logic simulation model is first established , the traditional two-valued logic signal after conversion to the Z - source inverter can be used in three-valued signal , and its effectiveness is verified by simulation . Then , on the third harmonic injection method , octave modulation method , three-valued logic space vector control method , current instantaneous value of single - loop feedback control method is verified , these signals after two - three-valued logic conversion after injection of Z source inverse becomes the main circuit model and analyzes the output of the current , voltage waveform, to verify the validity of the control strategy . Finally, the research and application of this article , the new Z - source inverter summary and outlook , and pointed out that the paper work has been completed and after work
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