By Duco W. J. Pulle, Pete Darnell, André Veltman
· offers an total figuring out of all elements of AC electric drives, from the motor and converter to the carried out regulate set of rules, with minimal arithmetic needed
· Demonstrates the best way to enforce and debug electric force structures utilizing a suite of committed systems, motor setup and software program instruments in VisSim™ and PLECS™
· No professional programming abilities required, permitting the reader to be aware of force development
· permits the reader to adopt real-time keep an eye on of a secure (low voltage) and coffee rate experimental drive
This booklet places the elemental and complicated techniques in the back of electrical drives into perform. keeping off concerned arithmetic every time useful, this ebook indicates the reader the best way to enforce various modern-day electric force innovations, with out requiring intensive programming talents. It permits the consumer to construct and run a sequence of AC force recommendations, starting from very simple drives to stylish sensorless drives. for that reason the e-book is the single sleek source to be had that bridges the space among simulation and the particular experimental surroundings. Engineers who have to enforce an electric force, or transition from sensored to sensorless drives, in addition to scholars who have to comprehend the sensible elements of operating with electric drives, will enormously take advantage of this precise reference.
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Extra resources for Applied Control of Electrical Drives: Real Time Embedded and Sensorless Control using VisSim™ and PLECS™
This entry is not used in this phase B simulation. The reason it is shown here is that this ‘operational’ dialog box is also used in development phases C and CC. An example of drive operation is shown in Figs. 10. Subplot (a) given in Fig. 9, shows the reference voltage waveform U_conv (which is also the motor phase voltage in this case) together with the motor current ialp, which is also the motor phase current. Note that this diagram is almost identical (same user input settings) to Fig. 6. However, the current ripple, observable in the phase A simulation is not present because the actual converter switching process is not modeled in phase B.
In the second part of this chapter the ‘tool chain’, otherwise referred to as the ‘development approach’ is discussed. Hence the steps used in this book to move from a simulation model to an actual experimental laboratory drive are shown with the aid of the hardware and software packages used in this book. 1 Control of Electrical Drives This section outlines the basic control principles of any type of drive, starting from the need to achieve precise speed control. Consequently the basic control steps required to realize this task are outlined starting from the speed controller, which in turn sets the torque level in a machine.
The reason for this is that there is a voltage drop across the power electronic devices. Furthermore, deadtime introduced to avoid ‘shoot through’ (a situation where two switches of one converter leg conduct simultaneously) will also cause a error between average converter voltage per sample Ts and reference phase voltage values. • The phase current, clearly shows a current ripple component caused by the PWM of the converter. 5 kHz (as to better observe the switching process. For actual experimental operation a PWM frequency of 30 kHz is typically selected, which leads to a much lower current ripple component.
Applied Control of Electrical Drives: Real Time Embedded and Sensorless Control using VisSim™ and PLECS™ by Duco W. J. Pulle, Pete Darnell, André Veltman