The company's patent portfolio includes 21 total patents issued or pending. The two patents issued bring the total Azure patents issued in the US to 13. The new additions reportedly address key value-adding components applicable to electric, hybrid and PHEV vehicle drive trains.
According to the company, the first patent relates to indirect rotor resistance estimation system and method. This method provides a way of sensing the rotor temperature of an AC induction motor without requiring any additional hardware in the motor or inverter.
The second patent relates to a filter package that includes a pair of spaced circuit boards with a magnetic core between the circuit boards. This invention resulted from the realization that a smaller compact filter can be achieved by packaging the core between a pair of circuit boards with the core windings interconnected to the circuit board.
The new technologies and hardware will be incorporated into the Azure Balance hybrid electric drive train currently in operation for both delivery truck and shuttle bus fleets.
Ron Iacobelli, chief technology officer of Azure Dynamics, said: "These new patents further the company's position as a leading innovator in power electronic components and motor controllers that advance our technology and, ultimately, its value to our end user customers by improving performance of the vehicle control system."
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