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2. Static frequency changers with ‘subharmonic’ control in conjunction with reversible variable-speed A.C. drives;Schnung;Brown Boveri Rev.,1964
3. Generalized techniques of harmonic elimination and voltage control in thyristor inverters: part I-harmonic elimination;Patel;IEEE Trans. Ind. Appl.,1973
4. ‘Dead-Band’ PWM switching patterns;Agelidis;IEEE Trans. Power Electron.,1996
5. Computer-aided design of PWM inverter systems;Bowes;IEE Proc.,1982