Pure Sine Wave Inverter

HMDK Pure Sine Wave Inverter, this power supply uses a large-capacity lithium battery pack as the power supply, converted by the inverter to output a pure 50HZ sine wave, the voltage is stable AC220V, small in size, light in weight and easy to carry. It not only solves the power supply required for field test, but also can be used as a backup power supply for other field operations.

Pure Sine Wave Inverter is a kind of inverter, which is a power electronic device that converts direct current (power battery, storage battery) into alternating current (generally 220V, 50Hz sine wave). Inverter and ACDC converter are opposite processes. The ACDC converter or power adapter rectifies 220V alternating current into direct current for use, and the inverter has the opposite effect, hence the name.

Classification

There are many classification methods for inverters, which can be divided into three categories according to the nature of the output wave string: Pure Sine Wave Inverter, Square Wave Inverter and Trapezoidal Wave Inverter. Pure Sine Wave Inverter outputs sine wave alternating current, while square wave inverter outputs poor quality square wave alternating current.

Inverters are usually divided into voltage input type and current input type. Different from the DC chopper, the width of the modulating pulse is related to the sine wave, so the output current or voltage is close to the sine wave. Because a large number of inductive components are required to simulate a current source, current-supply inverters are rarely used for electric vehicle driving. Voltage input type inverter circuit structure is simple and can carry out two-way energy conversion, so almost all electric vehicles use this kind of inverter. A typical three-phase full-bridge voltage input inverter.

According to different needs, its output waveform can be square wave or pulse width modulation waveform. The pulse width modulation scheme can be divided into sinusoidal PWM, current hysteresis PWM, voltage space SVPWM and so on. The inverter can use PWM technology to output pulse width withered waveforms to induction motors and permanent magnet synchronous motors. A suitable solution can effectively suppress harmonics, make better use of DC voltage, and reduce DC voltage fluctuations.

1. High performance and strong load capacity: advanced inverter technology, high power supply quality, and adapts to various loads, such as motors, electric drills, fluorescent lamps, gas lamps and other household appliances, communication equipment, and industrial equipment.

2. High reliability: Pure Sine Wave Inverter adopts advanced technology and redundant design, and is equipped with a power frequency transformer, which is controlled by CPU, and is carefully manufactured with high-quality components, stable performance and high reliability.

3. Perfect protection: Pure Sine Wave Inverter has input over-voltage and under-voltage protection; output overload and over-current protection; complete machine over-temperature protection, etc., which can resist the impact of high current starting load.

4. USB output interface: dual USB output interface (5V, 3000mA), which can charge phones and other devices.

5. Simple structure: The functional parts in the machine adopt modular design, the structure is simple, and the maintenance is convenient.

6. High efficiency and energy saving: The no-load current is small, which saves energy when there is no load.

7. Intelligent battery management: Intelligent battery monitoring and management system strengthens battery monitoring and extends battery life and utilization. The lower limit protection design of the DC power supply circuit. When the DC power supply is lower than the protection voltage, the inverter will sound an alarm and the working indicator will turn red.

The panel diagram is as follows:

1. LCD screen: display the remaining power of the machine, real-time power consumption and other information.

2. Power switch.

3. Grounding post: used for the protective grounding of the instrument to protect the person and the equipment from a safe power outlet

4. USB port, 5V 3000A can charge phones and other devices.

5. Charging interface.

6. Internal battery power output

7. The internal power supply is switched on and off everywhere

8. AC220V/50HZ pure sine wave power supply.

Working environment

Power charging:

Please use a dedicated power charging adapter to charge this machine.

When the remaining power is less than 10%, the load capacity of the power supply will be weakened. Please charge the power supply in time.

Please charge the power supply when it is turned off, and it is strictly prohibited to use it while charging.

Long-term inactivity will cause the battery to run out. Please make sure to charge it at least once every 1 month.

Generally, AC load equipment with less than the rated power of the machine can be used normally. However, when some electrical appliances are turned on, their power consumption is often greater than their rated power. For example, the starting current of inductive load equipment is generally 6-8 times the rated power, and the starting power of energy-saving lamps is dozens of times the rated power. The starting power is greater than the instantaneous maximum power that the power supply can withstand, thereby triggering the overload protection of the power supply.

The development of Pure Sine Wave Inverter technology has always been closely integrated with the development of power devices and their control technology. It has gone through five stages since its inception.

The first stage: From the 1950s to the 1960s, the birth of the thyristor (SCR) created conditions for the development of Pure Sine Wave Inverter.

The second stage: In the 1970s, the emergence of turn-off thyristors (GTO) and bipolar transistors enabled the development and application of inverter technology.

The third stage: In the 1980s, the advent of power FETs, insulated gate FETs and MOS controlled intertransistors laid the foundation for the development of high-power inverters.

The fourth stage: In the 1990s, the development of microelectronics technology enabled new control technologies such as vector control technology, multi-level control technology, fuzzy control technology and repetitive control to be better applied in the field of inverters. Greatly promoted the development of inverter technology.

The fifth stage: At the beginning of the 21st century, with the continuous progress and improvement of power electronic technology, modern control theory and microelectronics technology, inverter technology is moving towards high efficiency, high frequency, high reliability, high power density and intelligence. The direction of development.

New energy utilization

New energy refers to solar energy in a broad sense, which includes wind energy, water potential energy, chemical energy and so on. New energy sources such as solar and wind energy will become the main energy sources. These new energy sources are usually collected by photovoltaic cells made of semiconductor materials and converted into various kinds of electrical energy that people need by certain scientific and technological means. Inverter technology is one of the key technologies.

Eliminate harmonic pollution from mains

Effective management of harmonic pollution can not only improve the operation quality of electrical equipment and energy conservation, but also has a bearing on the issue of civil power safety. By rectifying the city power and using modern inverter technology to convert it to the city power standard, the harmonic pollution of the city power can be purified, and the safety of electrical equipment and users can be protected. Inverter is an important part of small wind power generation system, it undertakes the task of converting direct current into alternating current to supply power to the load.

Other application areas

Inverters are also widely used in many other fields, such as AC motor variable speed speed regulation, motor braking regenerative energy feedback, uninterruptible power supply system, induction heating, arc welding power supply, variable frequency power supply, etc.