RE:Harmonic ControllerJune 22/2023
Exro’s second U.S. provisional application is directed to a harmonic motor controller or current source. Today, what is considered state-of-the-art motor control is field-oriented control (“FOC”). FOC measures a motor current and calculates the right voltage to apply to the machine to control current and torque. Though a strong concept, it presents key limitations in addressing real-world motor control challenges, particularly motor harmonics. In contrast, Exro’s technology replaces the calculation of the switch states performed by FOC with a proprietary algorithm to greatly simplify motor control. As a result, the technology demonstrates high fault tolerance, responds dynamically to load or line changes, and ultimately improves harmonics across a wide variety of applications. This AC controller technology presents broad applicability to any scenario where DC-to-AC conversion is required. While Exro will continue to use trade secrets to protect proprietary software and algorithms, it will look to bolster software-related patent filings in the coming quarters.