I want to start synchronous condenser at zero speed. During start-up, there is no excitation, so synchronous condenser starts as an induction motor. My synchronous condenser is only composed of synchronous motor. But I have to use multi-mass torsional block and it has at least one generator and one turbine. But there is no turbine in my synchronous condenser. Q1. How can I set up the multi-mass torsional block? Synchronous condenser's Inertia conatant is 1.93[s]. and I'd like to apply this only the generator's inertia in multi-mass block. Q2. after synchronous condenser reached at about 1pu speed, how can I initialize exciter to make S.C operate at it's rated speed and rated voltage? please check the file attached.