Systems and methods for controlling operation of inverter for electric vehicle

A method for controlling a system, the system including an inverter including a first switch and a second switch, the method comprising:

• performing, by one or more controllers, operations for controlling the inverter, the operations including:
• generating a minimum pulse width value for a first pulse-width modulated (PWM) signal to control the first switch and for a second PWM signal to control the second switch, the first PWM signal and the second PWM signal associated with a commanded PWM signal;
• determining that an on-time pulse to be generated for the first PWM signal will be less than or equal to the minimum pulse width value for a first period based on a first deadtime configuration;
• and
• in response to the determining:
• determining a second deadtime configuration for the first PWM signal and the second PWM signal for the first period, the second deadtime configuration different from the first deadtime configuration;
• and
• generating the first PWM signal and the second PWM signal based on the second deadtime configuration, so that the generated first PWM signal maintains a low state for the first period and prevents the on-time pulse that is less than or equal to the minimum pulse width value,
• wherein each of the first deadtime configuration and the second deadtime configuration includes one or more of:
• a first deadtime value associated with a rising edge of the commanded PWM signal or a second deadtime value associated with a falling edge of the commanded PWM signal, and
• wherein the first deadtime value for the first deadtime configuration and the first deadtime value for the second deadtime configuration are the same, and the second deadtime value for the first deadtime configuration and the second deadtime value for the second deadtime configuration are different.

A system comprising:

• one or more controllers configured to perform operations including:
• generating a minimum pulse width value for a first pulse-width modulated (PWM) signal and for a second PWM signal, the first PWM signal and the second PWM signal associated with a commanded PWM signal for controlling a first switch and a second switch of an inverter;
• determining that an on-time pulse to be generated for the first PWM signal will be less than the minimum pulse width value for a first period based on a first deadtime configuration;
• and
• in response to the determining:
• determining a second deadtime configuration for the first PWM signal and the second PWM signal for the first period, the second deadtime configuration different from the first deadtime configuration;
• and
• generating the first PWM signal and the second PWM signal based on the second deadtime configuration, so that the generated first PWM signal maintains a low state for the first period and prevents the on-time pulse that is less than or equal to the minimum pulse width value,
• wherein each of the first deadtime configuration and the second deadtime configuration includes one or more of:
• a first deadtime value associated with a rising edge of the commanded PWM signal or a second deadtime value associated with a falling edge of the commanded PWM signal, and
• wherein the determining the second deadtime configuration includes increasing the first deadtime value or the second deadtime value of the first deadtime configuration by the minimum pulse width value.