In message
-septemb
er.org, at 20:22:44 on Thu, 16 Jul 2015, Recliner
remarked:
when the bus can be charged effortlessly and safely using
inductive charging? There's no cable or plug/socket to get damaged.

My phone and toothbrush have it, so why not the bus?

But a slight difference in the amount of power being transferred I think.
Not just literally between a toothbrush and a bus, but the degree to
which one can scale the engineering.

"HaloIPT supplied its revolutionary induction charging technology for
102EX, the Rolls Royce Phantom Experimental Electric vehicle, revealed on 2
March at the Geneva Motor Show."

From http://www.arup.com/Homepage_ElectricTransport.aspx

"Two of these small Citroen C1 electric vehicles are currently
participating in the Arup-led CABLED electric vehicle evaluation
programme in the West Midlands."
--
Roland Perry

Roland Perry wrote:
In message -septemb
er.org, at 20:22:44 on Thu, 16 Jul 2015, Recliner remarked:
when the bus can be charged effortlessly and safely using
inductive charging? There's no cable or plug/socket to get damaged.

My phone and toothbrush have it, so why not the bus?

But a slight difference in the amount of power being transferred I think.
Not just literally between a toothbrush and a bus, but the degree to
which one can scale the engineering.

"HaloIPT supplied its revolutionary induction charging technology for
102EX, the Rolls Royce Phantom Experimental Electric vehicle, revealed on 2
March at the Geneva Motor Show."

From http://www.arup.com/Homepage_ElectricTransport.aspx

"Two of these small Citroen C1 electric vehicles are currently
participating in the Arup-led CABLED electric vehicle evaluation
programme in the West Midlands."

Yup, what of it?
CABLED (Coventry and Birmingham Low Emission Demonstrators) Consortium

In message
-septemb
er.org, at 20:48:24 on Thu, 16 Jul 2015, Recliner
remarked:
when the bus can be charged effortlessly and safely using
inductive charging? There's no cable or plug/socket to get damaged.

My phone and toothbrush have it, so why not the bus?

But a slight difference in the amount of power being transferred I think.
Not just literally between a toothbrush and a bus, but the degree to
which one can scale the engineering.

"HaloIPT supplied its revolutionary induction charging technology for
102EX, the Rolls Royce Phantom Experimental Electric vehicle, revealed on 2
March at the Geneva Motor Show."

From http://www.arup.com/Homepage_ElectricTransport.aspx

"Two of these small Citroen C1 electric vehicles are currently
participating in the Arup-led CABLED electric vehicle evaluation
programme in the West Midlands."

Yup, what of it?

The difference in size of vehicle.
--
Roland Perry

Roland Perry wrote:
In message -septemb
er.org, at 20:48:24 on Thu, 16 Jul 2015, Recliner remarked:
when the bus can be charged effortlessly and safely using
inductive charging? There's no cable or plug/socket to get damaged.

My phone and toothbrush have it, so why not the bus?

But a slight difference in the amount of power being transferred I think.
Not just literally between a toothbrush and a bus, but the degree to
which one can scale the engineering.

"HaloIPT supplied its revolutionary induction charging technology for
102EX, the Rolls Royce Phantom Experimental Electric vehicle, revealed on 2
March at the Geneva Motor Show."

From http://www.arup.com/Homepage_ElectricTransport.aspx

"Two of these small Citroen C1 electric vehicles are currently
participating in the Arup-led CABLED electric vehicle evaluation
programme in the West Midlands."

Yup, what of it?

The difference in size of vehicle.

More relevant was the Rolls Royce Phantom which I quoted. Its batteries are
probably as big as a bus's.

In message
-septemb
er.org, at 07:38:29 on Fri, 17 Jul 2015, Recliner
remarked:

More relevant was the Rolls Royce Phantom which I quoted. Its batteries are
probably as big as a bus's.

How much does the installation cost and how quickly does it recharge the
batteries?
--
Roland Perry

Roland Perry wrote:
In message -septemb
er.org, at 07:38:29 on Fri, 17 Jul 2015, Recliner remarked:

More relevant was the Rolls Royce Phantom which I quoted. Its batteries are
probably as big as a bus's.

How much does the installation cost and how quickly does it recharge the batteries?

It was an experiment, so probably "a lot" and "too slowly". RR decided
there wasn't enough demand from its customers to proceed at this stage,
though apparently the car was terrific (very good performance and even more
silent than the V12 version).

I guess it'll come back when there are more city centre zero emission
zones, but the car had the usual EV range problem: it's fine in town, but
not for a longer distance run to the house in the country. Not many
customers, even for RR Phantoms, keep one car for the city centre only, and
another similar model for out of town usage.

Electric urban buses are different, as they only need a short, completely
predictable range. The same bus won't be expected to provide intercity
services. Inductive charging makes it possible to have frequent quick
top-ups on the road, not just in a depot or terminus.

On Fri, 17 Jul 2015 07:38:29 +0000 (UTC)
Recliner wrote:
More relevant was the Rolls Royce Phantom which I quoted. Its batteries are
probably as big as a bus's.

I doubt it. On the youtube video of one of the BYD buses it says the
batteries weigh 3 tons.

--
Spud

wrote:
On Fri, 17 Jul 2015 07:38:29 +0000 (UTC)
Recliner wrote:
More relevant was the Rolls Royce Phantom which I quoted. Its batteries are
probably as big as a bus's.

I doubt it. On the youtube video of one of the BYD buses it says the
batteries weigh 3 tons.

Yup, the car battery was 'only' 2/3 of a tonne:

From
http://www.autocar.co.uk/car-review/...-phantom-102ex

The 71kWh battery pack is made up of a NCM
(Lithium-Nickel-Cobalt-Manganese-Oxide) pouch cells. There’s a total of 96
cells weighing 640kg, 90kg more than the combined weight of the
conventional engine and transmission.

Three separate 3kW charger units are fitted to the battery pack and it
takes 20 hours to recharge the huge battery. Using a three-phase electrical
supply it takes eight hours for a full charge.

The 102EX also features induction charging, using an induction pad mounted
under the floor. Positioning the car over a transmitter pad, installed in
the road surface allows the battery to be recharged across a gap of 150mm.

This giant battery pack drives a pair of electric motors, which are mounted
on the rear subframe, and housed inside water jackets, themselves chilled
by coolant piped down from the radiator.

The motors drive a single ratio transmission with an integrated
differential. Each motor is rated at 145kW but, more importantly, together
they also deliver a whopping 590lb ft of torque from standstill. Although
the power from the motors is 48kW down on the equivalent power from the
V12, the torque peak is 59lb ft, or 11 percent, up.

In message
-septem
ber.org, at 08:40:18 on Fri, 17 Jul 2015, Recliner
remarked:

Three separate 3kW charger units are fitted to the battery pack and it
takes 20 hours to recharge the huge battery. Using a three-phase electrical
supply it takes eight hours for a full charge.

Hmm. 90 amps on three-phase. What people often forget is that the
National Grid is on record as saying that these kinds of additional
power draw are unsustainable for anything more than a fraction of
vehicles.

(And it's not just the main grid, but also the local supplies and
substations).
--
Roland Perry

On Fri, 17 Jul 2015 08:40:18 +0000 (UTC)
Recliner wrote:
The motors drive a single ratio transmission with an integrated
differential. Each motor is rated at 145kW but, more importantly, together
they also deliver a whopping 590lb ft of torque from standstill. Although
the power from the motors is 48kW down on the equivalent power from the
V12, the torque peak is 59lb ft, or 11 percent, up.

I don't know why the articles bother quoting torque since the amount of torque
that reaches the wheels - which is what matters - depends on the gearing ratios
as well as the motor.

--
Spud