Global Variable Frequency Drive Market Assessment, By Type [AC Drive, DC Drive, Servo Drive], By Power Range [Micro, Low, Medium, High], By Energy Storage [Voltage-Source Inverter (VSI), Current-Source Inverter (CSI), and Pulse Width Modulation Inverter (PWM)], By Application [Pumps, Electric Fan, HVAC, Conveyors, Extruders, Others], By End-use [Power Generation, Infrastructure, Oil & Gas, Food & Beverages, Mining, Agriculture, and Others], By Region, Opportunities and Forecast, 2017-2031F