Variable Frequency Drive Market Size, Share & COVID-19 Impact Analysis, By Type (AC Drive, DC Drive, Servo Drive), By Power Range (Micro, Low, Medium, High), By Application (Pumps, Electric Fan, HVAC, Conveyors, Extruders, Others), By End-user (Power Generation, Infrastructure, Oil & Gas, Food & Beverages, Mining, Agriculture, and Others), and Regional Forecasts, 2022-2029