Temperature Compensation For V/F Converter

In this article, a method to compensate the temperature effect of voltage to frequency converter (V/F) is presented. Realization technique is based on the use of fre-quency to voltage converter (F/V), which provides the inverse transfer characteristic of V/F converter, in feedback path. The conversion gain of the proposed scheme is identical as a simple V/F converter without effect from feedback con_guration. The frequency derivation due to the change of temperature from 25°C to 60°C can be improved more than 86.4%. Experimental results demonstrated the proposed principle using commercial devices is also included. © 2012 ICIC International.