Abstract: An inverter controlling apparatus comprises a conventional condenser-less inverter controlling section 11 for outputting a provisional torque command or current for torque command for controlling a conventional condenser-less inverter, i1* operation section 12 for receiving a motor torque &tgr;m, motor rotational speed &ohgr;m, power voltage v1, and coefficient &eegr; as inputs, for calculating a power current i1 by carrying out operation of equation (10), and for outputting the power current i1 as power current command value i1*, feedback operation section 13 for receiving the power current command value i1* and the real current i1 as inputs, for carrying out operation so as to make the deviation between the both to be 0 (for example, PI operation), and for outputting the torque command for correction or current for torque command for correction, and subtraction section 14 for subtracting the torque command for correction or current for torque command for correction which is output from the feedback operatio

Abstract: Disclosed herein is a novel monoglygeride lipase at least capable of catalyzing an enzymatic reaction of the following equation (a) and as substrate specificity, capable of acting on monoglyceride but incapable of acting on diglyceride and triglyceride:Monoglyceride+H.sub.2 O.fwdarw.Glycerol+Fatty acid (a)The monoglyceride lipase is produced by culturing a specific monoglyceride lipase producing microorganism of Bacillus and then collecting the monoglyceride lipase from the resulting culture. A method is also disclosed for the analysis of a monoglyceride-containing sample solution. The monoglyceride lipase is caused to act on the sample solution upon measurement of the monoglyceride in the sample solution. Either one of glycerol and the fatty acid formed in accordance with the equation (a) is then measured.