PMU stands for Power Management Unit, it is an advanced digital engine control unit. The technology is predominantly used to set the engine power in response to the setting of the pilot’s power control lever. Other external parameters including the ambient pressure and temperature are also considered by the unit while making the power adjustments. A growth in technical development within the power control systems market, and the use of enhanced technologies like IoT, AI, ML, etc within the electronics market are poised to drive innovation within this field. The inclusion of a PMU makes it impossible for a trainee pilot to over-torque the engine. The PMU identifies the factors which could potentially cause flameout and it automatically boosts the ignition in cases where the speed of the system has dropped suddenly. The propeller interface unit (PIU) responds to the speed control signals delivered by the PMU. Depending on the type of system being powered, it is noted that there are two key types of PMU to be noted, i.e. Type I and Type II. Type I is predominantly designed to function across various speeds. For instance, within the commercial aviation market a Type I PMU would be used in a traditional fixed-wing aircraft. Additionally, it is noted that Type II is a Hybrid/APU unit, and it is utilized when the engine is used solely to generate electricity and when the engine runs at a constant speed. Additionally, research states that hybrid systems are mainly used in applications that make use of electric motors for propulsion. The flight time is extended via the generator system by using fuel to increase stored energy for a given weight. APU systems-based electrical generators are noted to be used in vehicles or as ground support. Sizes range from very small to very large. Features including secondary outputs, backup battery management, external power connections, and output signals are included across both Types I as well as Type II PMUs.