Finite element modeling is an important part of modern development of different devices including HTS electric machines and other superconducting devices. At the same time modern HTS 2G superconductors possess nonlinear magnetic, thermal and mechanical properties. In this case finite element modeling in these devices should be verified with experimental data. The paper is devoted to the comparison of the results of finite element modeling and experimental research of the electrical machine with annular AC HTS windings. The obtained results are discussed concerning AC losses and future applications of these HTS machines in on-land power systems and transport.