1 . What are the current power inverter models ?
Currently on the market for power Off grid inverter inverters have 140W, 450W, 800W, 1200W, 2000W, 3000W, 225W portable , 400W portable .
2 . How to choose the right model ?
Optional power inverter can live and work according to your purpose to choose. Eg : 140W power inverter can use a 29- inch color TV and a VCD player .
450W power inverter can be used in general power tools.
800W power inverter can be used to drive a small microwave.
3 . Power inverter using the input power can only come from the vehicle is stationary or running ? Input supply may be derived from the car running state may be a stationary state.
4 . If the car is at rest , can use the power
solar inverters work ? Where to provide input power ?
Car in the stationary state , you can use the power inverter to work , driven by the electrical outlet can get below 150W output power directly from the cigarette lighter , use a dedicated higher than 150W car battery cable clamps to get the power.
5. How to determine the power inverter can be used to obtain the power of the time ?
And supporting power inverter batteries, generally amperes (AH) as power units of measurement, such as 80AH battery in addition to electrical power is multiplied by 10 , is carried by electrical power inverter can be used time .
For example , the television 100 watts
÷ 100 W × 10 = 8 hours 80 safe
6. When power inverter work surface temperatures 5000 watt inverter much ? Whether there is a certain security risk ?
Power inverter at maximum power output, not higher than 70 ℃, there will not be a security risk.
7 . Protection device power inverter have?
A ) temperature protection. Surface temperature is higher than 70 ℃, automatic shut-off .
2 ) High voltage protection. The input voltage is 16V ± 0.5V
3 ) low voltage alarm . The input voltage is 10.5V ± 0.5V
4 ) Low voltage protection. The input voltage is 10V ± 0.5V
图片
2014年5月26日星期一
2014年5月18日星期日
Power devices Category
① GTR power transistor (Giant Transistor):
GTR i.e. bipolar transistor of the power transistor (bipolar transistor), which is the so-called bipolar current from the two kinds of electrons and holes formed in the carrier. Generally use a Darlington 24 volt inverters configuration. Its advantages are: high current density and low saturation voltage. Its disadvantage in that the advantages of the MOSFET (see below).
② MOSFET (Metal Oxide Semiconductor Field Effect Tyansistor)
GTR i.e. bipolar transistor of the power transistor (bipolar transistor), which is the so-called bipolar current from the two kinds of electrons and holes formed in the carrier. Generally use a Darlington 24 volt inverters configuration. Its advantages are: high current density and low saturation voltage. Its disadvantage in that the advantages of the MOSFET (see below).
② MOSFET (Metal Oxide Semiconductor Field Effect Tyansistor)
2014年5月6日星期二
Inverter varieties and their classification
1, according to AC power inverter output frequency can be divided into frequency inverters, frequency counter and a high-frequency inverter . The inverter frequency is 50 ~ 60Hz frequency inverter ; common IF frequency inverter is 400Hz to ten KHz; ordinary high-frequency inverter frequency is more than ten KHz to MHz.
2, according to the number of phases of the inverter output can be divided into single-phase inverter , three-phase car power inverter and multiphase inverter.
3 , according to the whereabouts of the inverter output power can be divided into active and passive inverter inverter . Where will the power inverter output power to industrial inverters walks , called active inverter ; Where the inverter output power to the inverter output of a power load is called passive inverter devices .
4, according to the way the inverter main circuit can be divided into single-ended inverter, inverter push-pull , half-bridge and full-bridge inverter inverter .
5, according to the type of the main inverter switching devices can be divided into thyristor inverter transistor of the inverter , the pure sine wave inverters and the field effect insulated gate bipolar transistor (IGBT) inverter and the like. It can be attributed to \ semi -controlled \ inverters and \ full control \ inverter two categories. The former does not have a self- shutdown order , after the fall conduction components in moderation effect , so called \ semi-controlled type \ common thyristor that fall into this category ; latter, a self- shutdown order , ie no device the turn-on and turn-off can be restrained by a very modest, so called \ full-controlled \ , power insulated gate field effect transistor and right dual transistor (IGBT) etc. fall into this category .
6 , according to the DC power supply can be divided into a voltage source DC power inverters (VSI) and current source inverter (CSI). The former , nearly constant DC voltage , the output voltage of the alternating square wave ; latter , nearly constant DC current , the output is a square wave alternating current .
7 , according to the inverter output voltage or current waveforms can be divided into non- sine wave output inverter and sine wave output inverter.
8, according to the inverter control methods can be divided into Frequency Modulation (PFM) type inverter and pulse width modulation (PWM) inverter.
9 , according to the inverter switching circuit task methods can be divided into resonant inverter, fixed-frequency hard switching inverter and fixed- frequency soft switching inverter.
10 , according to the inverter commutation methods can be divided into load commutation inverters and self- commutation inverters.
2, according to the number of phases of the inverter output can be divided into single-phase inverter , three-phase car power inverter and multiphase inverter.
3 , according to the whereabouts of the inverter output power can be divided into active and passive inverter inverter . Where will the power inverter output power to industrial inverters walks , called active inverter ; Where the inverter output power to the inverter output of a power load is called passive inverter devices .
4, according to the way the inverter main circuit can be divided into single-ended inverter, inverter push-pull , half-bridge and full-bridge inverter inverter .
5, according to the type of the main inverter switching devices can be divided into thyristor inverter transistor of the inverter , the pure sine wave inverters and the field effect insulated gate bipolar transistor (IGBT) inverter and the like. It can be attributed to \ semi -controlled \ inverters and \ full control \ inverter two categories. The former does not have a self- shutdown order , after the fall conduction components in moderation effect , so called \ semi-controlled type \ common thyristor that fall into this category ; latter, a self- shutdown order , ie no device the turn-on and turn-off can be restrained by a very modest, so called \ full-controlled \ , power insulated gate field effect transistor and right dual transistor (IGBT) etc. fall into this category .
6 , according to the DC power supply can be divided into a voltage source DC power inverters (VSI) and current source inverter (CSI). The former , nearly constant DC voltage , the output voltage of the alternating square wave ; latter , nearly constant DC current , the output is a square wave alternating current .
7 , according to the inverter output voltage or current waveforms can be divided into non- sine wave output inverter and sine wave output inverter.
8, according to the inverter control methods can be divided into Frequency Modulation (PFM) type inverter and pulse width modulation (PWM) inverter.
9 , according to the inverter switching circuit task methods can be divided into resonant inverter, fixed-frequency hard switching inverter and fixed- frequency soft switching inverter.
10 , according to the inverter commutation methods can be divided into load commutation inverters and self- commutation inverters.
2014年5月4日星期日
Photovoltaic Test System
Test PV inverter system can be converted into electrical energy far an energy system. When the sun light is irradiated to the solar cell (array) to produce direct current collected by the photovoltaic inverter to convert AC power.
PV 220v inverters to convert DC to AC only, but also the key components of photovoltaic systems, there are mainly two types of photovoltaic systems, and electricity and grid-independent. Electricity grid system provides power directly into the grid, independent power inverter directly, usually without grid conditions.
PV 220v inverters to convert DC to AC only, but also the key components of photovoltaic systems, there are mainly two types of photovoltaic systems, and electricity and grid-independent. Electricity grid system provides power directly into the grid, independent power inverter directly, usually without grid conditions.
订阅：
博文 (Atom)