Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus for encoderless operation of a permanent magnet synchronous motor in an elevator

Method and apparatus for encoderless operation of a permanent magnet synchronous motor in an elevator

US Patent 6492788 · Granted Dec 10, 2002

Estimated economic value: $94,983,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Motor identification test2025
Active converter for air conditioning systems2025
Mechanically expanded microfin tube liquid cooled heat sink2025
Combined liquid and air cooled power electronics assembly2025
Hybrid power system for transport refrigeration systems2025
Boost converter state control2025
Power management in an elevator system2025
Dual mode converter for air conditioning system2024
Motor braking for air conditioning system2024
Heat exchanger for power electronics2024
Adjustment of drop rate of elevator car with electromagnetic brake system2024
Intelligent charging connector for transport refrigeration system2023