Electronic engine management systems

Electronic motor control systems Modern technology makes it possible to manufacture very complex electronic devices in terms of structure and functions for monitoring and controlling all modes of electric motors, including regulation of their rotation speed. Depending on manufacturers (as well as distributors, operators, service providers accustomed to brand terminology), such systems can be called frequency converters (FC), drivers, controllers and other generally synonymous words. All of them can provide:

• the highest accuracy of setting the speed of the electric motor and their stability;
  
• maximum efficiency, efficiency of converting electrical energy into mechanical energy, less heating of motors;
  
• a variety of control methods that are convenient for various users - from simple potentiometers to digital and analog inputs and even over the network (RS-485, Internet protocols), as well as (or) programming of operation both in timer mode and real time;
  
• a lot of other functions - all kinds of protection (current, thermal, against all types of interference, voltage surges, reverse transformation, imbalance and phase sequence violations), monitoring the temperature of the windings and bearings, the parameters of the received electricity, the state of insulation and grounding, remote diagnostics and much more;
  
• a significant increase (as a consequence of the above) service life, uninterrupted operation of engines, reduced costs for repair and maintenance of ventilation and air conditioning systems.
  

But there are also characteristic features inherent (as a rule, not for everyone and not always) to these still different terms:

• Electronic controllers are usually called low-power devices (hundreds of watts, maximum units of kilowatts), designed to control special electronically commutated motors (stepping, permanent magnet, etc.)

• Frequency converters - more powerful (up to tens of kilowatts) for conventional asynchronous electric motors with a squirrel-cage rotor, mostly three-phase.