Pytanie-odpowiedź
EKO Transport > BLDC silniki i akcesoria > Silniki bezszczotkowe BLDC ze stałym magnesem
Pytanie #1: Jak długo mogę korzystać silnik HPM przy maksymalnej mocy ?
Odpowiedź:


First question is: 
AT WHAT RPM DO YOU WANT TO GET MAX POWER/TORQUE ?


For example: max torque of HPM-5000B motor is 45Nm. (Nominal torque is 13-16Nm.)
Keep in mind that at max TORQUE motor RPM will be lower (because of lower efficiency)
Or you need to respectively increase supply voltage (to compensate increased losses).


By default duration time for all HPM series motors at max phase current is 10sec.
(Max phase current for HPM-5000B is 300A)

However duration of max Power / Torque is defined by motor overheating.

Therefore if motor cooling is very good duration time of max Power / Torque can be more longer.

Pytanie #2: Jak wymienic pokrywo chłodzenia w silnikach serii НРМ ?
Odpowiedź:


In order to replace AIR cover to LIQUID in HPM-3K / HPM-5K motors necessary to change wires position and make new holes.
Therefore, please keep in mind, that will be necessary to make some minor modifications when replacing covers.

        If you are not sufficiently qualified for this work You should warned us about this in advance.
        Then we would insistently offer you this modification to be already done in our service.

Pytanie #3: Jakie Napięcie ( 48V-96V ) jest optymalne dla systemow EV ?
Odpowiedź:

For Example:

In order to get 5kW at 48V (50V) necessary 100A 
In order to get 5kW at 96V (50V) necessary 50A

Easiest and cheapest way to get 5kW is to use 48V / 100A, because : 

  1. Battery will be more simple (less parts)  and safe (low voltage) 
  2. Low voltage controllers are more popular ( wider choice ) and cheaper. 
      (where you can get controller 120V / 50A ? As far as we know the smallest is 120V 200A so few times more expensive) 
  3. Also low voltage are more popular (wider choice) and so cheaper 
     (you can have higher power in account of higher RPM by increasing battery Voltage for what you have enough room )


Moreover:
  We have for these controllers better prices
  Many of these controllers can be with CAN bus
  During using the system via PC or Android we can see online data (phase current / motor and controller temp. and etc. )
 
All of VEC series controllers not have such options.

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