Synchronous-reluctance drive system

Siemens is extend­ing its port­fo­lio of Simotics syn­chro­nous-reluc­tance motors to include the two new shaft heights, AH90 and AH225. With these new addi­tions, the com­pa­ny is address­ing calls from renowned man­u­fac­tur­ers of pumps, fans, com­pres­sors and machine builders in gen­er­al for dif­fer­ent shaft heights. The motors are avail­able in a pow­er range of 0.55 to 45 kilo­watts (kW), and now also with rat­ed speeds of 1500 and 3000 rev­o­lu­tions per min^-1. In con­junc­tion with the recent­ly launched Sinam­ics Reluc­tance Con­trol License, pre­cise encoder­less closed-loop torque con­trol is pos­si­ble down to a standstill.
The data is accessed with the aid of a mobile ter­mi­nal and the Simotics Dig­i­tal Data App for motors, or alter­na­tive­ly the Siemens Indus­try Online Sup­port App for con­vert­ers. The avail­abil­i­ty of 2D or 3D engi­neer­ing data makes for short­er, more flex­i­ble design and engi­neer­ing processes.
As an inte­grat­ed dri­ve sys­tem, Simotics reluc­tance motors and Sinam­ics con­vert­ers are specif­i­cal­ly coor­di­nat­ed to work togeth­er. Com­pared to induc­tion motors, they offer high­ly effi­cient oper­a­tion, par­tic­u­lar­ly in the par­tial load range. The coor­di­nat­ed sys­tem com­pris­ing a Sinam­ics G120 con­vert­er and syn­chro­nous-reluc­tance motor enables the ide­al closed-loop con­trol of pumps, fans and com­pres­sors. By com­bin­ing the Sinam­ics S120 con­vert­er and Sinam­ics Reluc­tance Con­trol License, it is even pos­si­ble to achieve encoder­less closed-loop con­trol down to a stand­still, enabling appli­ca­tions in con­junc­tion with coil­ers, ser­vo pumps and extruders.

Proven system already in widespread operation

Syn­chro­nous-reluc­tance dri­ve sys­tems oper­ate with excep­tion­al ener­gy effi­cien­cy, while also pro­vid­ing far greater pow­er reserves than a com­pa­ra­ble asyn­chro­nous dri­ve. Par­tic­u­lar­ly in com­par­i­son to con­ven­tion­al asyn­chro­nous tech­nol­o­gy, with its Simotics syn­chro­nous-reluc­tance motors Siemens enables extreme­ly high effi­cien­cy to be achieved at the rat­ed oper­at­ing point and in the par­tial load range while at the same time ensur­ing high pow­er den­si­ty and dynam­ic per­for­mance. The result: sav­ings in terms of costs and energy.
Syn­chro­nous-reluc­tance tech­nol­o­gy has proven high­ly suc­cess­ful in count­less prac­ti­cal appli­ca­tions in the field. Cus­tomers such as machine builder Olbrich, plas­ter­board man­u­fac­tur­er Knauf and com­pres­sor man­u­fac­tur­er Kaeser Kom­pres­soren have opt­ed to use syn­chro­nous-reluc­tance dri­ves due to their out­stand­ing ener­gy effi­cien­cy, their opti­mum oper­at­ing behav­ior as a result of syn­chro­nous encoder­less oper­a­tion and their sim­ple com­mis­sion­ing with the aid of the motor code.