English to Russian Tech/Engineering Electronics / Elect Eng electronics

(Осторожно: English made in China)

Речь идет о процедуре эвакуации пассажиров лифта из кабины в случае обрыва электроэнергии.
Далее приводится три метода такой эвакуации. С двумя последними все понятно, а вот с первым, под туманным названием "Auto-running car", разобраться не могу. Что там со статором происходит и за счет чего замедляется движение обесточенного синхронного двигателя, если тормоз открыт?
Помогите разобраться, пожалуйста, кто смыслит в двигателях.

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Power failure emergency running program instruction
When the lift is in use, if the system’s power suddenly broke, passengers may be trapped in the car cage. In light of the situation, NICE 3000 integrated controller designed a power failure emergency running (self-rescue running) program which is easy and convenient to fulfill.
NICE 3000 power failure emergency running program are separated into three modes according to the power source of the traction machine. They are auto-running car, 48V battery power running, and UPS power running. To facilitate the description, explanation as follows:

Auto-running car: It means that opening the brake, and the prevent-force limits the car’s running by permanent-magnet synchronous motor jumps out stator coil. That is a rescue-way’s which the car is running slowly to get to the level. After the Nice3000 receives a power-failure-rescue signal, you should jump the U, V, W’s wire of permanent-magnet synchronous motor, and open brake. The lift would auto-running.
During the process you should monitor the lift’s speed, till leveling. When the speed is
slow, (The car is balance load or the load variation’s number is small) you can close
braking, and stop operation.
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