The dynamic braking means that after three-phase voltage is switched off asynchronous dynamo the dc current flows into the stator circuit to realize dynamo braking.

能耗制动是在异步电动机切离三相电源后，在定子回路通入直流电流，实现能耗制动。

youdao

ZX17 series stainless steel resistor is applied to AC 50hz, 1140v and DC voltage 1000v circuit, main of starting, braking and controlling motor. The rated power is 5.6kw.

ZX17系列不锈钢电阻器适用于交流50 HZ电压至1140v及直流电压至1000v的电路，主要作为电动机起动、制动与调速用，额定功率为5.6 KW。

youdao

It adopts axle center type gas top, AC frequency speed adjusting, frequency conversion, DC direct current speed adjusting and electromagnetic braking.

为轴心式气顶、AC变频调速变频刹车DC直流调速、电磁制动。

youdao

Its DC motor means there's no regenerative braking, but he claims it's cheaper and allows owners to rewind the armature or upgrade the brushes.

ENGADGET

Designed to be lightweight and cheap to produce, the robotic bicep upgrade uses a (mostly) aluminum frame, battery-powered DC motor, cable drive system, racket braking and thumbstick controller for movement, with a BeagleBone board supervising the electronics that pull it all together.

ENGADGET: UPenn's TitanArm exoskeleton prototype makes light work of heavy lifting (video)