Huawei Launches 241 kWh C&I ESS For Bangladesh

Huawei  Digital  Power,  one  of  the  leading  providers  of  PV-plus-storage systems,  launched  its  LUNA2000-241KWH-2S1  series  energy storage  system  (ESS)  for  Bangladesh’s  commercial  and  industrial  (C&I) applications during  a  launch  event  in  Dhaka. 

The  country’s  C&I  consumers  are  facing  challenges  in  balancing between  OpEx  and  energy  stability.  Huawei  says  it  has  developed its  latest  ESS  to  cater  to  such  needs.  It  is  equipped  with  4 vertically stacked  LFP  battery  packs,  and  offers  a  cumulative storage  capacity  of up  to  241  kWh  and  a  DC  busbar  voltage  range  of 642  V to  852 V.  This  voltage  is  transmitted  to  the  upstream  via  a subsequent  108 kW  3-phase  power  conversion  system  (PCS), making  an  AC-coupled configuration. 

Huawei  adopts  multiple  strategies  to  maximize  the  utilization  of stored energy,  whether  from  solar  or  grid  sources.  One  is  that each  battery pack  can  deliver  a  depth  of  discharge  (DOD)  of  up to  100%, eliminating  any  redundant  capacity.  In  parallel,  its  built-in active  charge and  discharge  balancing  function  maintains  optimal balance across  all  connected  battery  units  in  real  time.  This,  in  turn, helps  the system  maintain  a  steady  state  of  health  (SOH) throughout  its operational lifecycle,  preventing  a  drop  in cumulative  capacity caused  by  any  weak  unit.  Lastly,  its  automatic calibration  of  the  battery bank’s state-of-charge  (SoC)  always  keeps a  check  between  actual and displayed status,  unlike  the scheduled  manual  O&M  practice. 

Beyond  active  optimization,  the  company  focuses  on  operational  heat control,  which  is  also  responsible  for  charge  wastage,  albeit  passively. For  this,  the  ESS  features  a  cooling  mechanism  that  switches between multiple  modes  according  to  high  (liquid-cooled)  and  room-temperature (natural  air-cooled)  conditions.  It  also  recycles  PCS  waste heat  to  heat  up  in  low  temperatures.  Characterizing  it  as  ‘hybrid cooling’, the  company  states  that  active  and  passive  charge and discharge optimization  help  achieve  a  round-trip  efficiency  (RTE) of  up  to  91.3%. 

In  terms  of  safety,  this  ESS  features  a  safety  architecture  that  starts from  the  battery  cell  to  consumption.  It  comprises  both  electrical  and thermal  runaway  protection.  The  former  features  dual  cell detection that  detects  faults  and  sends  warnings  via  a  cloud-based system.  It also  has  overcurrent  protection  covering  the  AC  and DC  sides.  To protect against  thermal  runaways,  it  uses  cell-level heat  insulation, system  directional  gas  exhaust,  an  external oxygen  barrier,  and  a top explosion  vent.  The  company  notes that  this  ‘C2C  dual-link safety architecture’  ensures  a  reliable  energy supply  to  C&I prosumers. 

The  status  of  this  product’s  commercial  availability  in  the  country  was unknown  at  the  time  of  publication.