Paul Davis

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Questions related from Paul Davis

Wrt BLDC driven EV, will the motor controller restrict the mileage of vehicle no matter what capacity of Battery pack is kept??

We trialed with 1000W BLDC motor driven vehicle 60V topology, We attained 55-60km range for 50Ah battery but with a change of battery pack to 75Ah we got 70-72km only with same test...

03 May 2019 3,617 0 View

Why do LiFePO4 cylindrical cells leak.??

LFP cells 32650 type found leaking kept idle for may a month or so..

06 February 2019 6,936 3 View

For Fuzzy control of a dc converter, which of the following can be considered better P-Fuzzy, PI-Fuzzy or PID-Fuzzy?

Considering practical implementation which one should be selected. Please provide reason for ur suggestion.

20 September 2016 6,508 4 View

How to sense Voltage via optocoupler?

Consider a closed loop converter, where voltage is being sensed and control is provided. Can opto-coupler be used as a sensing unit. 4N25 for example. Normally, we will be having a variation in...

04 July 2016 1,772 6 View

What is meant by POWER of a DC converter?

V*I is generally power. We assume Pin = Pout while designing a converter. for a single in-out scheme its okay. consider a single in multiple out scheme. in is V*I say 10W What will be output? 1....

14 June 2016 1,833 7 View

What is the advantage of increasing a membership function in fuzzy controller?

consider a boost converter with fuzzy controller. what is the adv of taking 3,6,9 membership functions? will that cause complexity in hardware implementation (say in dsPIC30f) Considering the...

30 April 2016 9,498 5 View

If it is apt to apply a FLC controller for a boost converter with rule as:: if input is A then output is B :: ?

for a closed loop control of boost converter. separate current & voltage FLC blocks. one-to-one relation b/w the sensed parameter and the controller out.

28 February 2016 1,089 2 View

Why a DC converter with switching causes input ripple?

it was observed that a dc converter when connected to supply causes ripples in the input. What could probably the reason for this?

01 January 1970 3,510 17 View

How to know the remaining Lifecycle of Lithium battery/cell if we have a cell in hand?

I preferably consider a Lithium Ferro Phosphate cell (32650 type) 3.2V 6Ah cell. I have few cells both used and fresh. How to determine how much of Life cycle is used and how much remains. What...

01 January 1970 4,764 6 View