A multi-level high speed adjustable speed drive circuitry comprising: a plurality of modular multilevel, 3-phase inverter (2, 4; 1302, 1304, 1306, 1308) bridges, wherein the modular multilevel, 3-phase inverter bridges operate with fundamental frequency, f, wherein the modular multilevel, 3-phase inverter bridges include at least three levels, wherein the modular multilevel, 3-phase inverter bridges operate in one of Pulse-Width Modulation mode with 9 to 21 times the fundamental frequency and operating in Fundamental Frequency Mode, wherein inverter (2, 4; 1302, 1304, 1306, 1308) commutation frequency equals the fundamental frequency, wherein the modular multilevel, 3-phase inverters (2, 4; 1302, 1304, 1306, 1308) operate with split phase such that one group is displaced from the other by an angle θ, wherein θ = 60°/q, wherein q is a number of 3-phase groups, and wherein when n is a number of harmonic order, phase displacement of a harmonic component of order n between groups, θ n is nθ/q; characterized in that the multi-level high speed adjustable speed drive circuitry further comprises: a high-speed polyphase motor (6; 1322) with phases arranged in q 3-phase groups, wherein the motor (6; 1322) includes q x 3 number of windings; and electromagnetic means (5; 1318, 1320) for blocking selected groups of harmonics while passing components at fundamental frequency, f, wherein the electromagnetic means (5; 1318, 1320) includes coils carrying motor current linked by a magnetic core, wherein the electromagnetic means (5; 1318, 1320) is interposed between the plurality of modular multilevel, 3-phase inverter (2, 4; 1302, 1304, 1306, 1308) bridges and the high-speed polyphase motor (6; 1322) such that each input terminal of the electromagnetic means (5; 1318, 1320) is coupled to one output of the plurality of modular multilevel 3-phase inverter (2, 4; 1302, 1304, 1306, 1308) bridges, and each output terminal of the electromagnetic means (5; 1318, 1320) is directly coupled to one winding of the high-speed polyphase motor (6; 1322), wherein a number of electromagnetic means (5; 1318, 1320) output terminals is equal to a number of electromagnetic means (5; 1318, 1320) input terminals. a plurality of modular multilevel, 3-phase inverter (2, 4; 1302, 1304, 1306, 1308) bridges, wherein the modular multilevel, 3-phase inverter bridges operate with fundamental frequency, f, wherein the modular multilevel, 3-phase inverter bridges include at least three levels, wherein the modular multilevel, 3-phase inverter bridges operate in one of Pulse-Width Modulation mode with 9 to 21 times the fundamental frequency and operating in Fundamental Frequency Mode, wherein inverter (2, 4; 1302, 1304, 1306, 1308) commutation frequency equals the fundamental frequency, wherein the modular multilevel, 3-phase inverters (2, 4; 1302, 1304, 1306, 1308) operate with split phase such that one group is displaced from the other by an angle θ, wherein θ = 60°/q, wherein q is a number of 3-phase groups, and wherein when n is a number of harmonic order, phase displacement of a harmonic component of order n between groups, θ n is nθ/q; characterized in that the multi-level high speed adjustable speed drive circuitry further comprises: a high-speed polyphase motor (6; 1322) with phases arranged in q 3-phase groups, wherein the motor (6; 1322) includes q x 3 number of windings; and electromagnetic means (5; 1318, 1320) for blocking selected groups of harmonics while passing components at fundamental frequency, f, wherein the electromagnetic means (5; 1318, 1320) includes coils carrying motor current linked by a magnetic core, wherein the electromagnetic means (5; 1318, 1320) is interposed between the plurality of modular multilevel, 3-phase inverter (2, 4; 1302, 1304, 1306, 1308) bridges and the high-speed polyphase motor (6; 1322) such that each input terminal of the electromagnetic means (5; 1318, 1320) is coupled to one output of the plurality of modular multilevel 3-phase inverter (2, 4; 1302, 1304, 1306, 1308) bridges, and each output terminal of the electromagnetic means (5; 1318, 1320) is directly coupled to one winding of the high-speed polyphase motor (6; 1322), wherein a number of electromagnetic means (5; 1318, 1320) output terminals is equal to a number of electromagnetic means (5; 1318, 1320) input terminals.