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A device that makes a constant current in a circuit, such as a dry cell, a battery, a DC generator, etc, is called a DC source. The DC power supply has positive and negative electrodes, the positive electrode has a high potential, and the negative electrode has a low potential; When the two electrodes and the circuit connected, DC power supply can maintain a constant potential difference between two electrodes, thereby forming the anode to cathode by constant current in the external circuit. In order to make the potential difference between two constant DC power supply, must be made in the external circuit to flow from the positive to the negative charge, reverse the direction of the electric field force inside the power supply, return from negative to positive. This process is not rely on static electricity, and can only be realized by some kind of “non static electricity” which is opposite to the electrostatic force. Therefore, a power supply is a device that provides non static electricity, which transforms non electric energy into electrical potential energy between positive and negative electrodes by means of non static electricity.

SOROTEC SP6U-48200 48VDC Switching Power Supply Embedded System

1.Constructed with standard 19 inch screen, which has the advantage of wide use.
2.The data center area and the installation cost can be saved due to its small size and the embedded installation.
3.Wide input voltage range (85-290Vac), the power grid is adaptable.
4.Perfect lightning protection.
5.Rectifiers are hot-pluggable. Easy and quick on line maintenance.
6.The rectifier uses DSP (Digital Signaling Processor) ology, makes the power density ran up to 14W/In3.
7.Battery management, prolongs the life of the battery well.
8.Have passed CE, UL, TLC, and other related certifications.
9.Excellent energy conservation and environmental protection.

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Date: Oct.15-19, 2017
Booth No.: Hall 10.3 E18
Address: Pazhou International Exhibition Center B district

The PV module is a DC source and will not generate electromagnetic interference itself. Some inverter manufacturers cancel the DC EMI common mode inductance in order to reduce the cost. In fact, since the switching speed of the solar inverter is very high, which will produce large common mode interference current, if there is no EMI DC common mode inductance, the interference current signal will be transmitted to the DC cable and components, then the components will produce electromagnetic interference like an antenna, impact signals of photovoltaic system surrounding, such as with the antenna television and radio equipment will be bad to work.

In order to increase the power generation, the series connected inverters are usually of two stage structure with wide input voltage range, single-phase 70-550V and three-phase 200-1000V. The first is a BOOST boost, to configure the boost inductor, the second is to configure the inverter circuit, filter inductor, boost inductor and filter inductor is power inductors, from the current perspective, power inductor ripple in the whole operating period of current is relatively large and the working temperature is high, thus the DC bias characteristics of inductive power requirements high (especially at high temperature), high temperature Bs power inductors corresponding ferrite materials (magnetic flux density) is very necessary; On the other hand, from the point of view of the loss, the loss of power inductors may account for 20~40% of the total loss of the solar inverter system, and it is necessary to reduce the power inductance iron loss.

SOROTEC SPS3117C 1 – 5KVA Inverter Solar System

1.Pure sine wave output
2.High frequency full bridge design .
3.Built-in MPPT solar charge controller
4.Cold start function
5.Selectable charging current based on applications
6.Compatible to mains voltage or generator power
7.Auto restart while AC is recovering
8.Overload and short circuit protection
9.Smart battery charger design for optimized battery performance
10.Selectable input voltage range for household appliances and personal computers

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We believe that the development direction of the large server room of traditional UPS structure and micro module semi distributed UPS has been very clear, but these structures are more or less exist issues which efficiency and cost of UPS at this level are not optimal. Therefore, the city power supply technology, or the electricity directly supply to the server and other IT equipment, and do a good job of power failure protection, should be the next step in the development of data center power supply technology. With the rapid development of technology of the whole power supply cabinet, we think the two will be combined together, the adoption of BBU built-in power down protection of city power supply plug box + frame battery scheme will be the next step of development direction.

SHW48200 48VDC Outdoor Power Supply MPPT Off-Grid Telecom Station Solar Hybrid System

■Adopt advanced MCU microprocessor control technology.
■Advanced MPPT Technology, high converting efficiency higher than 97% for minimizing energy loss.
■Reversed current protection at night, over voltage and reverse polarity protection.
■Capable of selecting different charging mode for various types of batteries.
■Protection degree:IP55
■Industy-leading power density compact size and high reliability;
■Doorframe designed with waterproof structure, posted on the seal and equipped with waterproof lock on the door double insulation design;
■Cabine adopt quality galvanized sheet or aluminum coated steel sheet as material, surface coating anti-UV power;
■Suitable for outdoor installation.

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Power operation management. Redundancy technology is adopted in the power infrastructure of large data center room, and the construction is not a step in place. A large number of power equipment will be purchased step by step with the need of work. For example, the bank data center room built in three years, just after the initial purchase of new new electrical equipment installation, transport engineering equipment installation engineering equipment installation, integration and uninterrupted service for machine installation process, this process is not allowed to stop operation, live operation poses a threat to the safety of the management personal, but also increases the probability of error, can also cause serious key equipment downtime. There is a need for charged strict rules to avoid accident, double circuit simultaneous operation should be avoided when the UPS output power distribution unit (PDU) live line is connected in the dual way power supply system, ensure the security of power supply.

Routine maintenance management. UPS output distribution distribution unit (PDU) is the direct power supplier of the load, and its maintenance management is especially important. ICBC data center room PDU in the UPS cabinet is over 60, In our work, we have a special person responsible for the opening and closing of switches in the PDU, and fill in the application form for each change; According to the load change, periodically test the data center UPS output power distribution unit (PDU) current of each phase. Every week, the temperature of the switch is measured by infrared thermometer in the switchboard, once abnormal temperature changes are found, then check processing is carried out.

SOROTEC MPS9335 10-1200KVA Without Switch Cabinet Modular Uninterruptible Power Supply

1. Superior energy saving: Efficiency > 96% at 50%-75% rated load, and > 95% at 25% rated load; Input PF > 0.99,input THDi<3%
2. Easy-to-install: Top or bottom cabling, no need of input cabling cabinet.
3. Easy-to-maintain: Full front access, UPS, failed part can be replaced shortly.
4. Easy-to-modify: The number of batter y cells can be configured flexibly, so the original batteries can be used when modifying the legacy system; moreover, the battery cell can be replaced in time when it fails without interrupting the normal operation of modular uninterruptible power supply.
5. Extra large LCD that can display 13 language (Chinese ,English ,Russian, French ,Spanish and so on).
6. Provide large LCD touch screen (optional).
7. Each modular uninterruptible power supply modules provide 4.5KW charge capacity. equivalent to 10 to 12A.
8. Advanced DSP full digital control technologies realize higher system stability, online capacity expansion and maintenance.
9. Advanced distributed active parallel technology realizes parallel operation of 4 UPS units and online capacity expansion without centralized bypass cabinet.
10. Adaptive to severe power grid environment due to extra wide input voltage and frequency ranges.
11. Intelligent batter y management maintains batter y automatically to prolong the batter y life.
12. The machine system for modular structure, consists of 1 to 10 module’s biggest single module to 30 kw.
13. Modular uninterruptible power supply power module supporting hot swappable, capacity upgrade extremely simple.
14. Super ability for overload and short circuit, ensure the system stability and safety under the limit state of system.

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