Why “Sensorless Vector” drives are being misapplied in the crane industry?
Power Electronics International, Inc. has over 40 years in the manufacturing, engineering and design of a.c. drives for overhead hoist and cranes. Previous to this the President and founder of the company, Victor J. Habisohn, was project manager of General Time Corporation with the responsibility of the design of the Timing System used in the Apollo program. Equipment supplied was to be of the highest reliability since it triggered all other functions in the spacecraft – quality, reliability and safety were extremely important. This philosophy has continued in all PE’s products lines. Safety and Reliability is of the utmost importance. Given the above, it is understandable that PE would take great pains to understand all the safety concerns inherent in overhead hoist and crane electronic control. And indeed the ramifications of a “failure” of any part of the electrical system become more and more obvious as one understands the system “from the inside out”. Small electronic components,
