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# Regarding Square Wave versus Sine wave

J

#### Jayesh

Jan 1, 1970
0
Hey
I am kind of confused about what are the advantages & disadvantages of
square wave input over sine wave input for a cycloconverter when say
used in Fuel Cell vehicle. My major concern why square wave is used
instead of sine wave is it some recent technology.

I might not have put question in right words but i hope you understand
my point.

Plz reply at earliest

Sincerely
Jayesh

S

#### Stanislaw Flatto

Jan 1, 1970
0
Jayesh said:
Hey
I am kind of confused about what are the advantages & disadvantages of
square wave input over sine wave input for a cycloconverter when say
used in Fuel Cell vehicle. My major concern why square wave is used
instead of sine wave is it some recent technology.

I might not have put question in right words but i hope you understand
my point.

Plz reply at earliest

Sincerely
Jayesh
a) Sine is a continuous mathematical function and well defined in time
continuum. It was invented with the wheel.(Very relaxing)
b) Square? function is capritious and non defined in simple mathematical
formulae. We can and do use it to interface with true-false machines
called computers. So we invented interfaces to supply those signals.

Nothing recent, one is a friendly pat on head, the other a heavy stick
blow. So choose wisely.

HTH

Stanislaw
Slack user from Ulladulla.

E

#### EdV

Jan 1, 1970
0
Jayesh said:
Hey
I am kind of confused about what are the advantages & disadvantages of
square wave input over sine wave input for a cycloconverter when say
used in Fuel Cell vehicle. My major concern why square wave is used
instead of sine wave is it some recent technology.

I might not have put question in right words but i hope you understand
my point.

Plz reply at earliest

Sincerely
Jayesh

Do you have a fuel cell outputting a square wave and you want to
convert it to the proper voltage and current for the drive train of an
electric vehicle?

Ed V.

P

#### Paul Hovnanian P.E.

Jan 1, 1970
0
Jayesh said:
Hey
I am kind of confused about what are the advantages & disadvantages of
square wave input over sine wave input for a cycloconverter when say
used in Fuel Cell vehicle. My major concern why square wave is used
instead of sine wave is it some recent technology.

I might not have put question in right words but i hope you understand
my point.

Because the solid state devices that switch the high currents are much
more efficient when they are turned fully on and fully off (like a
square wave). When they operate at some point in between (necessary to
modulate a dc supply voltage smoothly following a sine wave), they
dissipate quite a bit of power as heat.

H

#### Homer J Simpson

Jan 1, 1970
0
Do you have a fuel cell outputting a square wave and you want to
convert it to the proper voltage and current for the drive train of an
electric vehicle?

I'm inclined to suspect he has DC output from the fuel cell and is trying to
figure the optimum drive converter to control the motor.

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