Technical solutions are described for controlling operation of a multiphase electric machine using a signal generator configured to generate n number of duty cycle signals of a combination pulse width modulation (PWM) scheme comprising of a continuous PWM scheme and a noncontinuous PWM scheme, with n being an integer greater than 3. A blending coefficient value determines relative weights of each of the continuous and noncontinuous PWM schemes in forming the combination PWM scheme. A blending function determines relative weights of each of the continuous PWM scheme and the noncontinuous PWM scheme used to generate the duty cycle signals. The bending function is calculated piecewise based on a difference between the blending coefficient value and two threshold values. The signal generator uses each of the duty cycle signals to control switching of a DC power to a corresponding phase of the multiphase electric machine.
SPACE VECTOR PULSE WIDTH MODULATION FOR MULTI-PHASE MACHINES
2021-03-18
Patent
Electronic Resource
English
Space vector pulse width modulation for multi-phase machines
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