[introduction] convenient and efficient charge the electric car to all batteries power supply (BEV) the success is crucial, can jump over with charging place much, charge rate is rapidder, consumer buys pure electric car more likely and not be fossil fuel car. The article will introduce 25 KW to shed the design skill of charger of fast and electric car continuously for you, and You Ansen is beautiful (Onsemi) rolls out relevant solution.

Convenient and efficient charge the electric car to all batteries power supply (BEV) the success is crucial, can jump over with charging place much, charge rate is rapidder, consumer buys pure electric car more likely and not be fossil fuel car. The article will introduce 25 KW to shed the design skill of charger of fast and electric car continuously for you, and You Ansen is beautiful (Onsemi) rolls out relevant solution.

Dc charges quickly the technology promotes electric car charge efficiency

Use direct current currently fast and electric car charges technology, it is a kind of when contemporary and electric car charges important way, it can shorten considerably charge time, the convenience sex that raises an user and use efficiency.

Among them crucial technology above all drag in arrives charge standard, basically have CHAdeMO, CCS at present (Combined Charging System) wait for a variety of charging with Tesla Supercharger standard, the likelihood supports the electric car of different brand and model to charge differently standard, because this charges in the choice,need to ensure when equipment as compatible as car.

In addition, shed what charge quickly to fill electric power to charge than communication normally continuously tall, in can carrying electric energy battery quickly. The on any account that charges electric power can be affected charge speed and efficiency, because this needs a basis,the demand of electric car is mixed charge the standards of equipment comes what the choice suits to fill electric power.

Dc charges quickly need appropriative charges equipment, normally the setting is charging station or specific place, need to notice to charge when charge safe problem, include to avoid to charge overheat happens in the process, be filled too or other and safe risk. Generally speaking, charge equipment and electric car can have corresponding safety protect a mechanism, but the person that use still should charge alertly any unusual situations in the process, be handled in time or stop to charge. Dc charges quickly relatively Yu Man fast charge, bigger to the concussion of batteries, because this suggests measurable control sheds the frequency that charges quickly continuously, avoid to use dc often to charge quickly, affect battery life and performance.

Shed what the technique can raise electric car effectively to charge quickly continuously charge speed and convenience sex, but still need to notice to charge in use process standard, fill electric power, charge equipment and charge the problem of the respect such as safety, ensure charge process on the safe side.

SiC module is to flow to charge quickly continuously technical key yuan parts of an apparatus

Carborundum (SiC) module is dc charges quickly the key in the technology yuan parts of an apparatus, siC module includes SiC MOSFET and SiC diode. Step up module is used at the DC-DC class of solar energy inverter, these module use rated voltage to be the SiC MOSFET of 1200V and SiC diode.

SiC module is the power source module that semiconductor of a kind of use carborundum regards his as switch, the purpose of module of SiC power source is to pass switch to change electric power, in order to improve systematic efficiency, the main function of SiC module is changeover electric power. Carborundum has an advantage than silicon, because leave the impedance when power source lesser (rise as a result of efficiency) , siC parts of an apparatus can move below taller switch frequency. The system that is based on SiC compares silicon the solution is more compact, lighter, can realize smaller design. Accordingly, siC parts of an apparatus is to want to improve efficiency and the good solution that improve heat government case.

The challenge that faces to solve dc to charge quickly, ansenmei is mixed to SiC technology enclose a solution to undertake persistent innovating, will conduce to simplify the design technological process of electric car charger. Ansenmei is depending on overall schism power supply and imitate solution, protection, pass the product such as feeling and join to combine, can offer high quality yuan parts of an apparatus, and the demand according to the client is custom-built system, combine the systematic major knowledge that Ansenmei accumulates ceaselessly in going 20 years, can at the same time will all these technologies are united in wedlock together, offer comprehensive solution.

Design the challenge that charger of fast and electric car faces

Wanting to design a charger of compact, efficient, reliable fast and electric car is not an easy thing. Besides actual change-over circuit, hardware protection technology is crucial also, need design personnel is analysed a variety of ” suppose ” setting, the solution will include to lie between yuan of bumper that parts of an apparatus forms by passive RC network and area.

Exorbitant voltage and ／ or electric current are a problem from beginning to end, need provides protection in order to ensure power semiconductor is not damaged. Among them a kind of technology is the voltage comparator that adds to have definition threshold value and delay, if had existed to press, this voltage comparator can prevent grid driver.

Shed a problem to have challenge sex quite too, install the NDC57000 grid driver that dark beauty rolls out, had had shed saturated protection (DESAT) function, because this can be in,the state of affairs with pair of BOM and product cost the least impact falls solve this problem. During the hardware protection of such is checking and be being debugged especially important, start level especially, produce uncertain switch the most likely right now.

NDC57000 can be used at protecting SiC power compositive module in PFC class (PIM) , its check a method to be able to be used at assessing threshold value of electric current of DESAT tripping operation, this is the functional test that must have. The height that sheds bus capacitor to be used at offerring place to need continuously is worth tripping operation electric current, and to grid infuse pulse in order to open module, allow DESAT to protect tripping operation. As the result of the test, can have theoretical value and real value comparative, undertake designing adjustment.

To advocate double active bridge (DAB) DCDC converter, also can use NDC57000, support pressing falls level of monitoring electric current. However, this kind of method is very sensitive to character of parts of an apparatus, although data table already contained a few information, but still need to undertake archetypal test and verify.

Another kind of method is the ongoing travel imitate that beginning the prototype that make, so that set parameter well and truly. So OK the means imitate of nondestructive and understanding are elementary with effect of sub short circuit. The disperse that DESAT protects enhances a function, the DCDC class that can be as high as 200-1000V to output voltage span designs staff, offer solution of limits of wide job voltage.

Of SiC technology showing one of advantages is its can be in next high frequency moving. However, this means fast Dv/dt to change rate, the physical layout of can fast to 25 KW charger produces an effect, must optimize layout to reduce parasitism inductance with utmost ground, especially power source walks along the parasitism inductance in the line. In addition, go up to still need amortize circuit in many bits, what be destroyed with reducing a likelihood to cause to the greastest extent and produce EMI problem is too strong with ringing.

Systematic level control is another main field, 25 KW fast charger provides many closed-loop control inside PFC and DAB implement, use at controlling transformer active magnetic flux to be mixed evenly primary wait for parameter to sub phase shift, control output voltage and electric current thereby. A challenge here is the gain that chooses every annulus route, so that whole system won’t become not stable.

Because the test needs high power facilities, design personnel connects regular meeting to build the link that has two PFC class and a DAB to answer in the compose on workbench decorate, safe test has in order to allow below controlled condition. Annulus answers a test to also apply to the ageing phase of mass production, be measured among them the energy of parts of an apparatus gets resumptive, this can save many production cost, discharge a mission in order to realize the low carbon on the world.

Have the IGBT drive of expensive system efficiency and dependability

Ansenmei’s NCD57000 is a sheet of big electric current that has segregation of in-house electric current passageway IGBT driver, the expensive system efficiency in applying for high power only is designed with dependability. Its function includes rice of complementary input, breakdown opening leakage and output of be in order, active to strap clamp, protection of negative grid voltage, accurate UVLO, DESAT, DESAT is soft close, the tall electric current that supports IGBT rice to strap platform voltage to fall is outputted (+ 4/-6 A) , transmission delay is short and match accurate, have tall transient state and electromagnetism immunity to interference, and ability of segregation of 5 KV electric current and independent discretion (OUTH and OUTL) drive output, with convenient system design.

NCD57000 can contain 5V and 3.3V signal in input side, in driver side can hold range of wide bias voltage, include to lose voltage function. NCD57000 is offerred > 5 KVrms (UL1577 grade) electric current is kept apart and > 1200 Viorm (working voltage) function. NCD57000 uses wide body SOIC-16 to enclose, input and assure to 8 Mm climbs electric distance between output, in order to satisfy requirement of aggrandizement safety insulation.

Develop rate to accelerate the client’s product, the referenced design that Ansenmei also rolled out NCD57000 is covered. SEC-25KW-SIC-PIM-GEVK is one is based on SiC power the 25kW fast dc of compositive module moves car charger to consult the design is covered. This complete SiC solution is comprised by PFC and DC-DC class, have many 1200V, 10 Mohm NXH010P120MNF1 of module of half bridge SiC, super- low RDS(ON) and the smallest change parasitism inductance, can show reduce conduct loss and switch loss. The current controller with powerful support board (UCB) , and Zynq? – 7000 SoC FPGA and be based on ARM? processor, this system can output the power that the biggest 25kW provides below voltage in 200V-1000V, it is batteries of electric car of 400V or 800V to charge with the global efficiency of 96% .

SEC-25KW-SIC-PIM-GEVK still introduced electric current to keep apart SECO-HVDCDC1362-40W-GEVB of solution of NCD57000 of driver of big electric current, auxiliary power source mainly, can be low pressure yuan parts of an apparatus offers stable voltage course, surge control, press too etc compositive protection and many communication interface.

PFC of SEC-25KW-SIC-PIM-GEVK supportable three-phase and DAB, the two-way power that can achieve 400V/800V batteries is changed, accord with EN55011 A class and IEC 61851 standard, compositive the NXH010P120MNF1 SiC module of half bridge, 1200V, 10 Mohm SiC M1 MOSFET, and segregation type big electric current, efficient grid driver NCD57000.

Epilogue

Dc charges quickly the technology is electric car charges the one big breakthrough of the domain, offerred to gain ground and be used of electric car more convenient, efficient charge means. As the ceaseless development of science and technology and application, dc charges to had made one of mainstream way that contemporary and electric car charges quickly. The 25 KW that article place introduces sheds the design skill of fast charger continuously, and the relevant solution that rolls out by Ansenmei, conduce you develop dc to charge quickly quickly relevant product, market of race to control first machine.

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