Keywords: power electronics, electronics products, product development, DOE, design of experiments, SMC, sliding mode control, SOSM, second–order sliding mode, PI control, robustness definition, motor control, arc welding, induction heating
Experimental design approach to explore suitability of PI and SMC concepts for power electronic product development
Power electronics equipment is deployed for control of power flow in electrical domain. Steady and fast growth in controller, active and passive power and control components, power control topologies etc. and the impact on overall gains it makes to society have led the evolution process of power electronics field to mature fast. Apparently, contemporary SMC concepts with their simple implementation procedures using structure switching mechanism along with their ability to reject disturbances and also generate parametric insensitivity remain very attractive research area for several decades. However, compared to PI control, their market penetration in power electronics domain is below expected line. Inertia to market penetration of SMC idea is large. For practical implementation, PI control remains as industry standard. This paper, using experimental design approach, tries to figure out basic differences between PI control and SMC concepts in shaping up a completely engineered product in power electronics domain.