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1.The power of UPS generally refers to the output power. The input power is bigger than the rated power, especially when the battery has discharged after a period of power stopping. The input rectifier not only supplies power to the load, but also charges the battery. The maximum current can reach 1.3 times of the rated current. If the battery pack capacity is particularly large, and the host is equipped with a charging module, the current will be greater.

2.UPS itself is a kind of non-linear load, which will produce some harmonic current feedback to the input grid, and will increase the temperature of the generator ball. If the generator load ratio is too high, it may burn the ball.

3.The load behind UPS to the generator is all selected by the internal circuit of on grid UPS to be battery or city power/power generation. It is one-time loading. There is no soft start or other way. If UPS is loaded at 80% load and the impulse current is calculated at three times, all of them exceed the rated output of the generator configured at two times. The frequency and voltage of the generator will decrease at this time. UPS detects this change and will immediately switch to the battery for power supply.

Therefore, the capacity of the generator with UPS should be large enough, not as simple as 2 times the capacity. It should be configured according to the specific situation.

GP9335C 10-800KVA Low Frequency Online UPS

■Use advanced 6th generation DSP and full digital control technologies to realize higher system stability.
■Output power factor is 0.9, carrying capacity than conventional UPS with 10% above, as users reduce investment cost.
■Advanced distributed active parallel technology can realize parallel operation of 6PCS UPS units without the need of centralized bypass cabinet.
■6-inch extra large LCD that can display 12 language ( Chinese ,English,Russian,Spanish,French and so on).
■Extra wide input voltage and frequency range make it adapt to severe power grid environment.
■Intelligent battery management maintains battery automatically to prolong the battery life.
■Standard input/output filter improves the system EMC performance.
■Extra strong capability to withstand output overload and short circuit, ensuring the system stability and system safety under extreme conditions.
■Layered independently-sealed ventilation channel and re-dundant fan, circuit boards with protective paints and a dust filter embedded make it highly efficient to dissipate heat and protect the product effectively under severeenvironment.

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1.To have super environmental adaptability

Unlike commercial UPS, which is placed in data centers and server rooms under strict control of temperature, humidity and cleanliness, industrial UPS is often difficult to ensure stable temperature and humidity in the industrial environment. In addition, in special industrial occasions, the air in the environment may also contain corrosive gases, which will affect the normal operation of power supply equipment and reduce its performance over a long period of time. Therefore, this requires industrial UPS to have super environmental adaptability, and to cope with the test of harsh environment with comprehensive high-performance performance.

2.To be able to effectively eliminate all kinds of radio disturbances

Power grid pollution in industrial application site is very serious, and it often faces the situation of power supply shortage and frequent accidents. Precision production equipment in industrial production line always has very strict requirements for power supply. Power problems such as voltage instability and current flashover may cause equipment damage or lead to quality problems in product production. Therefore, as the core of industrial power supply system, high-quality UPS is an important part of power protection. It should have the characteristics of providing high-quality power to the load under any load and market electricity input, eliminate the impact of instantaneous interruption of power grid on industrial equipment system, effectively avoid the high frequency of power grid, prevent the harm of overvoltage to load, and ensure the reliable operation of key industrial processes and control.

3.To have super load capacity

In the industrial production, management, monitoring and other links, there are a large number of load equipment, especially in the industrial automation production line, using a large number of automatic control equipment, DCS, computers and so on, and these loads mostly include inductance load, capacitance load, fluctuation and high peak impact load, which have a great impact on the current. At the same time, in the industrial enterprise users, the balanced distribution of the load group is always relative, and the unbalanced distribution is absolute, especially in the production sector, the unbalanced phenomenon is more serious. Therefore, the outstanding load capacity is another important challenge for industrial UPS.

Based on the nearly harsh application standard of industrial UPS, only those enterprises that have developed, produced and served high-power UPS technology and series products and accumulated corresponding industrial application experience can design and produce industrial power uninterruptible power supply system well. Only in view of the harsh physical environment, power supply environment and load environment of industrial applications, can provide high reliable and highly available industrial UPS products and solutions to meet the special needs of industrial enterprises.

IPS9312 IPS9332 10-160KVA Industrial UPS

■Adopt full digital control technology.
■Intelligent detection and monitoring function.
■Digital control and static switch zero switching.
■Input/output full isolation
■DC UPS isolated with utility power completely.
■Cubicle design with power standard.
■Multifunctional protection for overvoltage,low voltage,
■Overcurrent, short circuit and so on.
■Large-screen LCD monitor Chinese and English operation interface.
■Ultralong 256 event records, user-friendly analysis and management to the situation of power supply.
■Static bypass has a strong anti-overload capacity.

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The solar charging controller in off-grid solar power generation system is specially designed to provide intelligent charging and discharging management for storage battery. The solar charging controller adopts PWM constant voltage charging mode, which can effectively protect storage battery and increase its service life.

1.Application occasion

It can be widely used in off-grid solar power supply systems such as family, school, street, station, power station, pastoral area, field and so on.

2.Functional characteristics

(1)MCU Intelligent Control, Excellent Performance.
(2)The control circuit is completely isolated from the main circuit, which is safe and reliable.
(3)Intelligent battery charging management to prolong battery life.
(4)Simple and concise LED display shows the operation status of the equipment at a glance.
(5)Wide temperature range, high altitude.

3.Tecchnical requirement

(1)Maximum charge-discharge current: 10A~60A
(2)Rated DC Voltage: 12V/24V/48V
(3)Solar maximum charging voltage: 18V/36V/72V
(4)It has anti-backconnection protection, battery overcharge, over-discharge protection, solar panel backconnection protection, lightning protection.

SOROTEC Solar MPPT Charge Controller

1.Adopt advanced MCU microprocessor control technology.
2.12v/24v self detect to choose output voltage.
3. Advanced MPPT technology, High converting efficiency higher than 97% for minimizing energy loss.
4.Capable of selecting different charging mode for various type of batteries
5.capable of connecting additional DC load for wide applications.
6.Three stage charge control system(bulk , absorption, and float mode)with optional temperature compensation.
7.LED indicators display charge status in real time.
8.Pulse Width Modulation(PWM)technology combined with a multi-stage charge control algorithm leads to superior charging and enhanced battery performances.

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The only way to improve the efficiency of the inverters is to reduce the losses. The main losses of the solar inverters come from IGBT, MOSFET and other power switches, as well as magnetic devices such as transformers and inductors. Loss is related to the current and voltage of components and the process adopted by the selected materials.

The losses of IGBT are mainly conduction loss and switching loss. The conduction loss is related to internal resistance and current passing through the device, switching loss is related to switching frequency of the device and DC voltage of the device.

The main loss of inductance is copper loss and iron loss. Copper loss refers to the loss caused by the resistance of inductance coil. When the current is heated by the resistance of inductance coil, part of the electric energy is transformed into heat energy, which is called copper loss because the coil is usually wound by insulated copper wire. Copper loss can be calculated by measuring short-circuit impedance of transformer. Iron loss includes two aspects: one is hysteresis loss, the other is eddy current loss. Iron loss can be calculated by measuring no-load current of transformer.

REVO-E 3-5kW Hybrid Solar Energy Storage Inverters

1. PV and utility power take the load at same time ( can setting ).
2. Output power factor PF=1.0
3. On/Off grid with energy storage.
4. AC charging and AC output time setting.
5. Charging voltage and charging current timing.
6. External Wi-Fi device optional.
7. Connected with battery optional.
8. Wide PV input range 120-450VDC.
9. MAX PV Array Power 4500W.

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There are currently three technical routes. First, space vector pulse width modulation (SVPWM) is used to reduce the loss. Secondly, silicon carbide materials are used to reduce the internal resistance of power devices. Third, three-level, five-level multi-level electrical topology and soft switching technology are adopted to reduce the voltage at both ends of power devices and the switching frequency of power devices.

1.Space Vector Pulse Width Modulation (SVPWM)

SVPWM is a fully digital control method, which has the advantages of high utilization rate of DC voltage and easy control. It is widely used in inverters. With high utilization of DC voltage, lower DC bus voltage can be used under the same output voltage, which reduces the voltage stress of power switching devices, reduces the switching losses on devices, and improves the conversion efficiency of inverters to a certain extent. In space vector synthesis, there are many combinations of vector sequences. Through different combinations and sorting, the effect of reducing switching times of power devices can be achieved, which can further reduce the switching losses of power devices of solar inverters.

2.Components Using Silicon Carbide Material

The impedance per unit area of silicon carbide devices is only one percent of that of silicon devices. IGBT (insulated gate bipolar transistor) and other power devices made of silicon carbide can reduce the on-state impedance to one tenth of the conventional silicon devices. The silicon carbide technology can effectively reduce the reverse recovery current of the diode, thus reducing the switching loss on the power devices and the current capacity required for the main switch. Therefore, using silicon carbide diode as the reverse diode of the main switch is the way to improve the efficiency of the inverter. Compared with traditional fast recovery silicon reverse parallel diodes, the reverse recovery current of silicon carbide reverse parallel diodes decreases significantly, and the total conversion efficiency can be improved by 1%. After using fast IGBT, the switching speed is accelerated and the conversion efficiency of the whole machine can be improved by 2%. The efficiency of the inverter will be further improved when the SiC reverse-parallel diode is combined with the fast IGBT.

3.Soft Switching and Multilevel Technology

Soft switching technology makes use of resonance principle to make the current or voltage in switching devices change according to sinusoidal or quasi-sinusoidal law, and turn off the devices when the current crosses zero naturally. When the voltage naturally crosses zero, turn on the device. Thus the switching loss is reduced, and the problems of inductive switching and capacitive switching are greatly solved. When the voltage at both ends of the switch or the current flowing through the switch is zero, the switch is turned on or off, so there is no switching loss in the switch. Three-level inverters are mainly used in high voltage and high power applications. Compared with the traditional two-level structure, the output of three-level inverters increases zero level, and the voltage stress of power devices decreases by half. Because of this advantage, under the same switching frequency, three-level inverters can adopt smaller output filter inductance than two-level inverters, and the inductance loss, cost and volume can be effectively reduced. Under the same output harmonic content, three-level inverters can adopt lower switching frequency, lower switching loss and higher conversion efficiency than two-level inverters.

REVO-E 3-5kW Hybrid Solar Energy Storage Inverters

1. PV and utility power take the load at same time ( can setting ).
2. Output power factor PF=1.0
3. On/Off grid with energy storage.
4. AC charging and AC output time setting.
5. Charging voltage and charging current timing.
6. External Wi-Fi device optional.
7. Connected with battery optional.
8. Wide PV input range 120-450VDC.
9. MAX PV Array Power 4500W.

Learn More