Читать книгу Analysis and Control of Electric Drives - Ned Mohan - Страница 26

1 1. What is an electric drive? Draw the block diagram and explain the roles of its various components.

2 2. What has been the traditional approach to controlling the flow rate in the process industry? What are the major disadvantages which can be overcome by using ASDs?

3 3. What are the factors responsible for the growth of the adjustable‐speed drive market?

4 4. How does an air conditioner work?

5 5. How does a heat pump work?

6 6. How do ASDs save energy in air conditioning and heat pump systems?

7 7. What is the role of ASDs in industrial systems?

8 8. There are proposals to store energy in flywheels for load leveling in utility systems. During the off‐peak period for energy demand at night, these flywheels are charged to high speeds. At peak periods during the day, this energy is supplied back to the utility. How would ASDs play a role in this scheme?

9 9. What is the role of electric drives in electric transportation systems of various types?

10 10. What are the different disciplines that make up the study and design of electric‐drive systems?