逆变器英文

2021年1月26日发(作者：netp)
英文原文：


Inverter into ac, dc will lower if dc voltage transformer, through the
communication,
namely
receive
standard
pressor
ac
voltage
and
frequency.
For large capacity of inverter, due to the dc bus voltage is higher, ac
output generally do not need to boost transformer can achieve 220V, in
medium and small volume of inverter, due to the low voltage dc 12V, such
as, must design, 24V pressor circuit.
In
general,
small
volume
inverter
mosfet
inverter
circuit,
there
the
whole
bridge with high frequency inverter circuits pressor push-pull inverter
circuits,
and
will
boost
the
circuit
transformer
neutral
plug
up
in
power,
two
power
tube
is
alternant,
output
power,
because
get
ac
power
transistor
DeBian altogether, drive and control circuit is simple, because of the
transformer has certain leakage, can limit the short-circuit current,
thus improving the reliability of the circuit. Its defect is driven low
utilization, transformer perceptual load ability is poor.
The bridge has push-pull inverter circuit to overcome the shortcoming,
power
transistor
circuits
of
the
output
pulse
width
adjustment,
the
output
voltage
of
the
RMS
is
changed.
Because
of this
circuit
has
free-wheeling
loop, even to the perceptual load, the output voltage waveform nor
distortion. This circuit faults is under the arm, bridge, no power
transistor must therefore be adopted by isolating circuit or special
driving power. In addition, in order to prevent, bridge, and the common
arms
occurs
before
the
final
design
must
be
shut,
namely
current
must
set
time, the dead zone circuit structure is relatively complicated.
Photovoltaic (pv) grid inverter circuit control circuit:
These kinds of inverter circuit are needed to control circuit, general
square
wave
and
are
weak
wave
two
control
mode,
the
output
pulse
inverter
circuit is simple, low cost, low efficiency, harmonic components. Sine
wave output is the development trend of the inverter, along with the
development of microelectronics technology, PWM function of micro
processor
is
also
available,
so
the
sinusoidal
output
inverter
technology
has matured.
1 the output pulse current inverter using PWM integrated circuit, such
as
SG3525
TL494,
etc.
Practice
shows
that
the
SG3525
integrated
circuits,
and adopts power mosfet as switch power components, can achieve higher
performance price of inverter, because SG3525 has direct driving power
mosfet
ability
and
internal
standards
and
operational
amplifiers
and
the
voltage protection function, thus its outer circuit is simple.
2 the sinusoidal output inverter control circuits, sine wave output
inverter,
the
control
circuit
can
be
used
as
INTEL
microprocessor
control,
the company produces 80C196MC, MOTOROLA MP16 production and CROCHIP
company production of MI - PIC16C73 etc, these microcontroller is more
road,
and
PWM
generator
set,
the
bridge
between
the
arms
of
the
dead
zone,