Power electronics drive for cylcoidal electric machine

An electrical system comprising:

• a direct current (DC) voltage bus;
• an alternating current (AC) voltage bus;
• a power inverter module (PIM) connected to the DC voltage bus and to the AC voltage bus, and having a pair of inverter phase legs, at least one of which includes a plurality of semiconductor switches;
• a cycloidal electric machine with a plurality of electrical phases connected to the PIM via the AC voltage bus, and having a stator and a rotor with respective stator and rotor axes, wherein the rotor axis is eccentric with respect to the stator axis, an airgap is defined between the stator and the rotor that is smaller at a center of rotation of the rotor than elsewhere around a circumference of the rotor, and the rotor moves with two degrees of freedom (2DOF), the 2DOF including rotating motion about the rotor axis and orbiting motion about the stator axis;
• and
• a controller configured to apply, for each respective phase of the plurality of phases, a phase-specific offset value to a carrier signal and to a voltage reference signal to thereby generate a modified carrier signal and a modified reference signal, respectively, to generate a pulse width modulation (PWM) signal using the modified carrier signal and the modified reference signal, and to power the cycloidal electric machine via the PIM by energizing the semiconductor switches using the PWM signal.