Kone Corporation

Ari Pikivirta

Harri Hakala

Lauri Stolt

Petteri Valjus

Arto Nakari

Tuukka Korhonen

Sakari Korvenranta

Riku Lampinen

Asmo Tenhunen

Henri Wenlin

Nithil Karimpanackal Natarajan

Risto Jokinen

Pekka Rantanen

Henri Vakkamäki

Marko Saarinen

Pekka Vuoti

Tuukka Kauppinen

An adjustable brake controller of an elevator brake including a DC bus, first terminals for connecting the brake controller to a first magnetizing coil, second terminals for connecting the brake controller to a second magnetizing coil, a first controllable power switch coupled between the first terminals and the DC bus, the first controllable power switch being configured to supply electric power from the DC bus to the first magnetic coil responsive to a first control signal, a second controllable power switch coupled between the second terminals and the DC bus, the second controllable power switch being configured to supply electric power from the DC bus to the second magnetizing coil responsive to a second control signal, and a controller configured to generate the first and the second control signals for controlling the first and second power switches, respectively, with a brake open mode and a brake holding mode.

Fully adjustable brake controller without need of DC-link

Growing community of inventors

Tervakoski, Finland

Ari Pikivirta