Influence analysis of working state control angle on electric spring with switchable smart load

Traditional electric springs can only stabilize the voltage of critical loads (CL), while sacrificing operational stability non-critical (NCL), status these two is obviously unequal, exposure to fluctuating voltages for extended periods time be hazardous NCL. To solve this problem, a control method based on spring (ES) with switchable smart load (SSL) that does not distinguish between CL and NCL proposed. This paper briefly introduces first definition, principle strategy ES SSL. Then, relationship working state angle in analysed detail. A obtain reasonable value ranges by setting boundary conditions studied. Finally, an experimental platform built DSP TMS320F28069 experiments, results show different adopting strategy, adjusted four-quadrant operation realized changing angle.