BMW I01, Информация о продукте

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I01�High-voltage�Components
4.�Electrical�Machine�Electronics
61
Index Explanation
10 Bidirectional�DC/AC�converter�in�the�electrical�machine�electronics
11 Overcurrent�fuse�in�the�supply�line�for�the�convenience�charging�electronics
12 Overcurrent�fuse�in�the�supply�line�for�the�electric�heating
13 Overcurrent�fuse�in�the�supply�line�for�the�EKK
14 DC/DC�converter�in�the�EME
4.1.4.�Structure�and�functions
The�electrical�machine�electronics�is�made�up�internally�of�four�subcomponents:�the�bidirectional�DC/
AC�converter,�the�unidirectional�AC/DC�converter,�the�DC/DC�converter�and�the�EME�control�unit.�The
link�capacitors�are�also�an�element�of�the�power�electronics�switching�in�order�to�smooth�the�voltage
and�filter�high-frequency�parts.
It�performs�the�following�functions�with�help�of�the�subcomponents�mentioned:
• Control�of�the�internal�subcomponents�by�the�EME�control�unit
• Supply�of�the�12 V�electrical�system�via�the�DC/DC�converter
• Control�of�the�electrical�machine�(engine�speed,�torque)�using�DC/AC�converter
• High-voltage�power�management
• Contacting�of�the�electric�motor�via�busbars
• Contact�of�the�high-voltage�battery
• Charging�the�high-voltage�battery�when�stationary
• Contact�of�the�convenience�charging�electronics
• Contact�of�the�EKK
• Contact�of�the�electric�heating
• Contact�of�the�Range�Extender�Electrical�Machine�Electronics
• Communication�with�other�control�units,�in�particular�the�EDME
• Cooling�for�electrical�machine�electronics
• Evaluation�of�sensors�of�the�electromechanical�parking�lock
• Activation�of�the�electromechanical�parking�lock
• Activating�the�electrical�vacuum�pump
• Active�and�passive�discharging�of�the�link�capacitors�to�voltages�less�then�60 V
• Active�evaluation�of�the�signal�for�the�high-voltage�interlock�loop
• Self-test�and�diagnostic�function
DC/DC�converter
The�DC/DC�converter�in�the�electrical�machine�electronics�of�the�I01�is�also�able�to�adopt�the�following
operating�modes: