Patent · US Expired

Self commissioning controller for field-oriented elevator motor/drive system

US5929400A · kind A · utility

84Cited by
6References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 22, 1997
Grant dateJul 27, 1999
Priority date
Expiry dateDec 22, 2017

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH02P21/16
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

A self-commissioning controller 7 for a field-oriented elevator motor controller 14 includes calculating an integral gain K.sub.I, a proportional gain Kp, and an overall gain (Gc) for the motor controller; obtaining initial values of a rotor time constant .tau..sub.R, magnetizing current Id, and motor torque constant K.sub.T for the motor controller 14, and obtaining a value of a motor transient inductance L.sigma.; calculating final values for said rotor time constant .tau..sub.R and magnetizing current Id, using said transient inductance L.sigma.; and calculating a system inertia J* parameter for speed loop compensation 16 within the motor controller 14. The controller 7 may also include calculating the initial values for .tau..sub.R, Id, and K.sub.T *, and performing self-commissioning automatically upon receiving a command from a service tool 80.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.