Method for operating unit of motor vehicle

The invention relates to a method (100) for operating a unit (12) of a motor vehicle (2), in particular an electric refrigerant compressor, having an intermediate circuit capacitor (58), a brushless DC motor (28) and a converter (62) connected therebetween, a discharge circuit (70) being connected in parallel to the intermediate circuit capacitor (58). As a first condition (118), it is checked whether there is a request (120) for discharging the intermediate circuit capacitor (58). Depending on a second condition (108), the intermediate circuit capacitor (58) is discharged via the discharge circuit (70) or the DC motor (28). The invention also relates to a unit (12) of a motor vehicle (2) and to a computer program product (98). 本发明涉及用于运行机动车(2)的机组(12)、尤其是电动的制冷剂压缩机的方法(100)，机组具有中间回路电容器(58)、无刷直流电马达(28)和接在它们之间的变流器(62)，其中，与中间回路电容器(58)并联有放电电路(70)。作为第一条件(118)，检查是否存在用于对中间回路电容器(58)放电的请求(120)。依赖于第二条件(108)，中间回路电容器(58)经由放电电路(70)或直流电马达(28)放电。本发明还涉及机动车(2)的机组(12)以及计算机程序产品(98)。